»Ø¸´£º [AnyScript] Re: Problem of obtaining joint forces by gait3D

Sylvain!
thks for the message. how could I get the practcial hip reaction forces when
taking the frame of pelivs into account?
waiting for your message

regards
Alec

----- 原始邮件 ----
�件人: AnyBody Support <support@anybodytech.com>
æ"¶ä»¶äººï¼š anyscript@yahoogroups.com
2008/6/30(周一), 下�9:30:04
主题: [AnyScript] Re: Problem of obtaining joint forces by gait3D

Hi Alec,

Just a small correction: the hip reaction force is displayed in the
local frame of the femur and not in the frame of the pelvis as I said
in the previous message. Please take it into account.

Best regards,
Sylvain, AnyBody Support.

— In anyscript@yahoogrou ps.com, “AnyBody Support” <support@… >
wrote:
>
> Hi Alec,
>
> The reaction force on the hip has 3 components: Reaction.Fout[ 0],
> Reaction.Fout[ 1] and Reaction.Fout[ 2]. Component [0] refer to the
> first axis (X in this case), components [1] refer to the second
axis
> (Y in this case) and component [2] refer to the third axis (Z in
this
> case). You can see in the legend box of the graph which colours
> correspond to which component.
> Notice that the forces are given in the local frame of the pelvis.
So
> the axis [0], [1] and [2] are the X, Y and Z of the pelvis.
>
> I hope this makes it clear.
>
> Best regards,
> Sylvain, AnyBody Support.
>
>
>
> — In anyscript@yahoogrou ps.com, “yueningma” <yueningma@> wrote:
> >
> > thanks for Søren and Jokke’s answer.
> > To be honest, the curves about displacement and acceleration
could
> be
> > learned easily.But about reaction forces of the body modeling
seem a
> > little different. For example,the hip joint forces.
> > the hip joint is a sphere joint and have 3 degrees of freedom.
when
> > studing the joint forces, the curves in ChartFX window could be
got
> > with the legend. the colors of force curve respesnt the same
> > dircetions as the displacements’ .
> > Actualy, the hip joint force is devided into 3 directions. but
how
> to
> > decide the exact one for each axis.
> >
> > how can i learn it in detail?
> >
> > Regards
> >
> > Alec
> >
> >
> > — In anyscript@yahoogrou ps.com, “AnyBody Support” <support@>
> wrote:
> > >
> > > Hi Alec
> > >
> > >
> > >
> > > In the ChartFX window you can click on an icon which looks like
a
> > table, if
> > > you hold the mouse over this icon it will say Data Editor, this
> will
> > display
> > > a table below the graph which will contain legends for the
> plotted data.
> > > This will allow you to see which colors are representing the
data.
> > >
> > >
> > >
> > > Regarding the other question, I agree with Jokke, more info is
> needed.
> > >
> > >
> > >
> > > Best regards
> > >
> > > Søren
> > >
> > >
> > >
> > > _____
> > >
> > > From: anyscript@yahoogrou ps.com
[mailto:anyscript@yahoogrou ps.com]
> > On Behalf
> > > Of joakim_holmberg
> > > Sent: 27 June 2008 08:39
> > > To: anyscript@yahoogrou ps.com
> > > Subject: [AnyScript] Re: Problem of obtaining joint forces by
> gait3D
> > >
> > >
> > >
> > > Hello.
> > > I might have misunderstod your questions totally. With that
said
> I’ll
> > > go on.
> > > Usually, the different colors of the curves descibe forces,
> > > accelerations etc in different coordinates (directions) . How to
> get
> > > reasonable results? Well, I think you need to supply more input
> to be
> > > able to get help from anyone.
> > > /jokke (Sockertoppen Labs)
> > >
> > > — In anyscript@yahoogrou <mailto:anyscript% 40yahoogroups. com>
> ps.com,
> > > “yueningma” <yueningma@> wrote:
> > > >
> > > > Hello.
> > > > Those days the gait3D model is used to get joint forces such
as
> > > > hip,ankle and so on. The model is computed with the markers’
> > > > displacement values and force plate data. But how to get the
> reasonal
> > > > results?
> > > > Also when analysing used the model , from chartFX window
> reaction
> > > > forces of a contrsain ,such as in hip joint folder, could be
> got. What
> > > > are the different curves mean? The red ,yellow curves are for
> what? I
> > > > am exhausted.
> > > >
> > > > regrads.
> > > >
> > > >
> > > > Alec
> > > >
> > >
> > >
> > >
> > >
> > >
> > > [Non-text portions of this message have been removed]
> > >
> >
>

   ___________________________________________________________

雅虎邮箱,您的终ç"Ÿé‚®ç®±ï¼?
http://cn.mail.yahoo.com/

[Non-text portions of this message have been removed]

Hi Alec,

To see the reaction forces of the hip in the pelvis local frame you
have two solutions:

1 - In the definition of the hip joint (Body/AAUHuman/Leg/Jnt) you
can switch around the order of the two nodes, the first one to be
declared is giving the reference frame. Right now the node on the
femur is the first. Switch to have the pelvis node declared first and
the reaction forces will be displayed in the pelvis frame.

2 – Transform the reaction forces vector to the pelvis coordinate
system by orientation matrix multiplication. There is a file in the
file section of the group “Small Examples/Coordinates
Transformations” that explain how to do it. Notice that you will
probably have to transform the vector in global coordinates first and
then from the global to the pelvis coordinates system.

Best regards,
Sylvain, AnyBody Support.

— In anyscript@yahoogroups.com, yuening ma <yueningma@…> wrote:
>
> Sylvain!
> thks for the message. how could I get the practcial hip reaction
forces when taking the frame of pelivs into account?
> waiting for your message
>
> regards
> Alec
>
>
>
>
> ----- 原始邮件 ----
> Ã¥?`件人: AnyBody Support <support@…>

æ"¶ä»¶äººï¼š anyscript@yahoogroups.com
å·²å?é€?: 2008/6/30(å¨ä¸€), 下å?ˆ9:30:04
> 主题: [AnyScript] Re: Problem of obtaining joint forces by
gait3D
>
>
> Hi Alec,
>
> Just a small correction: the hip reaction force is displayed in the
> local frame of the femur and not in the frame of the pelvis as I
said
> in the previous message. Please take it into account.
>
> Best regards,
> Sylvain, AnyBody Support.
>
> — In anyscript@yahoogrou ps.com, “AnyBody Support” <support@ >
> wrote:
> >
> > Hi Alec,
> >
> > The reaction force on the hip has 3 components: Reaction.Fout[
0],
> > Reaction.Fout[ 1] and Reaction.Fout[ 2]. Component [0] refer to
the
> > first axis (X in this case), components [1] refer to the second
> axis
> > (Y in this case) and component [2] refer to the third axis (Z in
> this
> > case). You can see in the legend box of the graph which colours
> > correspond to which component.
> > Notice that the forces are given in the local frame of the
pelvis.
> So
> > the axis [0], [1] and [2] are the X, Y and Z of the pelvis.
> >
> > I hope this makes it clear.
> >
> > Best regards,
> > Sylvain, AnyBody Support.
> >
> >
> >
> > — In anyscript@yahoogrou ps.com, “yueningma” <yueningma@> wrote:
> > >
> > > thanks for Søren and Jokke’s answer.
> > > To be honest, the curves about displacement and acceleration
> could
> > be
> > > learned easily.But about reaction forces of the body modeling
> seem a
> > > little different. For example,the hip joint forces.
> > > the hip joint is a sphere joint and have 3 degrees of freedom.
> when
> > > studing the joint forces, the curves in ChartFX window could be
> got
> > > with the legend. the colors of force curve respesnt the same
> > > dircetions as the displacements’ .
> > > Actualy, the hip joint force is devided into 3 directions. but
> how
> > to
> > > decide the exact one for each axis.
> > >
> > > how can i learn it in detail?
> > >
> > > Regards
> > >
> > > Alec
> > >
> > >
> > > — In anyscript@yahoogrou ps.com, “AnyBody Support” <support@>
> > wrote:
> > > >
> > > > Hi Alec
> > > >
> > > >
> > > >
> > > > In the ChartFX window you can click on an icon which looks
like
> a
> > > table, if
> > > > you hold the mouse over this icon it will say Data Editor,
this
> > will
> > > display
> > > > a table below the graph which will contain legends for the
> > plotted data.
> > > > This will allow you to see which colors are representing the
> data.
> > > >
> > > >
> > > >
> > > > Regarding the other question, I agree with Jokke, more info
is
> > needed.
> > > >
> > > >
> > > >
> > > > Best regards
> > > >
> > > > Søren
> > > >
> > > >
> > > >
> > > > _____
> > > >
> > > > From: anyscript@yahoogrou ps.com
> [mailto:anyscript@yahoogrou ps.com]
> > > On Behalf
> > > > Of joakim_holmberg
> > > > Sent: 27 June 2008 08:39
> > > > To: anyscript@yahoogrou ps.com
> > > > Subject: [AnyScript] Re: Problem of obtaining joint forces by
> > gait3D
> > > >
> > > >
> > > >
> > > > Hello.
> > > > I might have misunderstod your questions totally. With that
> said
> > I’ll
> > > > go on.
> > > > Usually, the different colors of the curves descibe forces,
> > > > accelerations etc in different coordinates (directions) . How
to
> > get
> > > > reasonable results? Well, I think you need to supply more
input
> > to be
> > > > able to get help from anyone.
> > > > /jokke (Sockertoppen Labs)
> > > >
> > > > — In anyscript@yahoogrou <mailto:anyscript% 40yahoogroups.
com>
> > ps.com,
> > > > “yueningma” <yueningma@> wrote:
> > > > >
> > > > > Hello.
> > > > > Those days the gait3D model is used to get joint forces
such
> as
> > > > > hip,ankle and so on. The model is computed with the markers’
> > > > > displacement values and force plate data. But how to get
the
> > reasonal
> > > > > results?
> > > > > Also when analysing used the model , from chartFX window
> > reaction
> > > > > forces of a contrsain ,such as in hip joint folder, could
be
> > got. What
> > > > > are the different curves mean? The red ,yellow curves are
for
> > what? I
> > > > > am exhausted.
> > > > >
> > > > > regrads.
> > > > >
> > > > >
> > > > > Alec
> > > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > [Non-text portions of this message have been removed]
> > > >
> > >
> >
>
>
>
>
> ___________________________________________________________
> 雅虎邮箱,您的终ç"Ÿé‚®ç®±ï¼?
> http://cn.mail.yahoo.com/
>
> [Non-text portions of this message have been removed]
>

Hi Sylvain!
The solution 1 of you mentioned is used to compute the hip joint
forces in the vertial direction for the standing case .
Accoding to mechancial fundamentals,the right or left hip joint in
vertical is about 1/4 weight.But acturally, with the solution,the
result obtained is about one half of the body weight.
The running program is
“\Repository.6.2\Repository.6.2\ARep\Aalborg\StandingModelCircumduction”.
what should I do?

with regards
Alec

— In anyscript@yahoogroups.com, “AnyBody Support” <support@…> wrote:
>
>
> Hi Alec,
>
> To see the reaction forces of the hip in the pelvis local frame you
> have two solutions:
>
> 1 - In the definition of the hip joint (Body/AAUHuman/Leg/Jnt) you
> can switch around the order of the two nodes, the first one to be
> declared is giving the reference frame. Right now the node on the
> femur is the first. Switch to have the pelvis node declared first and
> the reaction forces will be displayed in the pelvis frame.
>
> 2 ? Transform the reaction forces vector to the pelvis coordinate
> system by orientation matrix multiplication. There is a file in the
> file section of the group “Small Examples/Coordinates
> Transformations” that explain how to do it. Notice that you will
> probably have to transform the vector in global coordinates first and
> then from the global to the pelvis coordinates system.
>
> Best regards,
> Sylvain, AnyBody Support.
>
>
>
> — In anyscript@yahoogroups.com, yuening ma <yueningma@> wrote:
> >
> > Sylvain!
> > thks for the message. how could I get the practcial hip reaction
> forces when taking the frame of pelivs into account?
> > waiting for your message
> >
> > regards
> > Alec
> >
> >
> >
> >
> > ----- 原始邮件 ----
> > å?`件人ï¼? AnyBody Support <support@>

?"¶ä»¶äººï¼š anyscript@yahoogroups.com
å·²å?é€?: 2008/6/30(å¨ä¸€), 下å?ˆ9:30:04
> > 主题� [AnyScript] Re: Problem of obtaining joint forces by
> gait3D
> >
> >
> > Hi Alec,
> >
> > Just a small correction: the hip reaction force is displayed in the
> > local frame of the femur and not in the frame of the pelvis as I
> said
> > in the previous message. Please take it into account.
> >
> > Best regards,
> > Sylvain, AnyBody Support.
> >
> > — In anyscript@yahoogrou ps.com, “AnyBody Support” <support@ >
> > wrote:
> > >
> > > Hi Alec,
> > >
> > > The reaction force on the hip has 3 components: Reaction.Fout[
> 0],
> > > Reaction.Fout[ 1] and Reaction.Fout[ 2]. Component [0] refer to
> the
> > > first axis (X in this case), components [1] refer to the second
> > axis
> > > (Y in this case) and component [2] refer to the third axis (Z in
> > this
> > > case). You can see in the legend box of the graph which colours
> > > correspond to which component.
> > > Notice that the forces are given in the local frame of the
> pelvis.
> > So
> > > the axis [0], [1] and [2] are the X, Y and Z of the pelvis.
> > >
> > > I hope this makes it clear.
> > >
> > > Best regards,
> > > Sylvain, AnyBody Support.
> > >
> > >
> > >
> > > — In anyscript@yahoogrou ps.com, “yueningma” <yueningma@> wrote:
> > > >
> > > > thanks for Søren and Jokke’s answer.
> > > > To be honest, the curves about displacement and acceleration
> > could
> > > be
> > > > learned easily.But about reaction forces of the body modeling
> > seem a
> > > > little different. For example,the hip joint forces.
> > > > the hip joint is a sphere joint and have 3 degrees of freedom.
> > when
> > > > studing the joint forces, the curves in ChartFX window could be
> > got
> > > > with the legend. the colors of force curve respesnt the same
> > > > dircetions as the displacements’ .
> > > > Actualy, the hip joint force is devided into 3 directions. but
> > how
> > > to
> > > > decide the exact one for each axis.
> > > >
> > > > how can i learn it in detail?
> > > >
> > > > Regards
> > > >
> > > > Alec
> > > >
> > > >
> > > > — In anyscript@yahoogrou ps.com, “AnyBody Support” <support@>
> > > wrote:
> > > > >
> > > > > Hi Alec
> > > > >
> > > > >
> > > > >
> > > > > In the ChartFX window you can click on an icon which looks
> like
> > a
> > > > table, if
> > > > > you hold the mouse over this icon it will say Data Editor,
> this
> > > will
> > > > display
> > > > > a table below the graph which will contain legends for the
> > > plotted data.
> > > > > This will allow you to see which colors are representing the
> > data.
> > > > >
> > > > >
> > > > >
> > > > > Regarding the other question, I agree with Jokke, more info
> is
> > > needed.
> > > > >
> > > > >
> > > > >
> > > > > Best regards
> > > > >
> > > > > Søren
> > > > >
> > > > >
> > > > >
> > > > > _____
> > > > >
> > > > > From: anyscript@yahoogrou ps.com
> > [mailto:anyscript@yahoogrou ps.com]
> > > > On Behalf
> > > > > Of joakim_holmberg
> > > > > Sent: 27 June 2008 08:39
> > > > > To: anyscript@yahoogrou ps.com
> > > > > Subject: [AnyScript] Re: Problem of obtaining joint forces by
> > > gait3D
> > > > >
> > > > >
> > > > >
> > > > > Hello.
> > > > > I might have misunderstod your questions totally. With that
> > said
> > > I’ll
> > > > > go on.
> > > > > Usually, the different colors of the curves descibe forces,
> > > > > accelerations etc in different coordinates (directions) . How
> to
> > > get
> > > > > reasonable results? Well, I think you need to supply more
> input
> > > to be
> > > > > able to get help from anyone.
> > > > > /jokke (Sockertoppen Labs)
> > > > >
> > > > > — In anyscript@yahoogrou <mailto:anyscript% 40yahoogroups.
> com>
> > > ps.com,
> > > > > “yueningma” <yueningma@> wrote:
> > > > > >
> > > > > > Hello.
> > > > > > Those days the gait3D model is used to get joint forces
> such
> > as
> > > > > > hip,ankle and so on. The model is computed with the markers’
> > > > > > displacement values and force plate data. But how to get
> the
> > > reasonal
> > > > > > results?
> > > > > > Also when analysing used the model , from chartFX window
> > > reaction
> > > > > > forces of a contrsain ,such as in hip joint folder, could
> be
> > > got. What
> > > > > > are the different curves mean? The red ,yellow curves are
> for
> > > what? I
> > > > > > am exhausted.
> > > > > >
> > > > > > regrads.
> > > > > >
> > > > > >
> > > > > > Alec
> > > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > [Non-text portions of this message have been removed]
> > > > >
> > > >
> > >
> >
> >
> >
> >
> > ___________________________________________________________
> > 雅虎邮箱,您的终?"Ÿé‚®ç®±ï¼?
> > http://cn.mail.yahoo.com/
> >
> > [Non-text portions of this message have been removed]
> >
>

Hi!
Also in the model, the reference is the rotate joint- hip joint.that
is , unit of the computing force for hip joint is ‘N.m’. what I said
is right? If I want to the hip joint force whose unit is ‘N’. what
shall I do?
with regards
Alec

— In anyscript@yahoogroups.com, “yueningma” <yueningma@…> wrote:
>
> Hi Sylvain!
> The solution 1 of you mentioned is used to compute the hip joint
> forces in the vertial direction for the standing case .
> Accoding to mechancial fundamentals,the right or left hip joint in
> vertical is about 1/4 weight.But acturally, with the solution,the
> result obtained is about one half of the body weight.
> The running program is
>
“\Repository.6.2\Repository.6.2\ARep\Aalborg\StandingModelCircumduction”.
> what should I do?
>
> with regards
> Alec
>
>
>
> — In anyscript@yahoogroups.com, “AnyBody Support” <support@> wrote:
> >
> >
> > Hi Alec,
> >
> > To see the reaction forces of the hip in the pelvis local frame you
> > have two solutions:
> >
> > 1 - In the definition of the hip joint (Body/AAUHuman/Leg/Jnt) you
> > can switch around the order of the two nodes, the first one to be
> > declared is giving the reference frame. Right now the node on the
> > femur is the first. Switch to have the pelvis node declared first and
> > the reaction forces will be displayed in the pelvis frame.
> >
> > 2 ? Transform the reaction forces vector to the pelvis coordinate
> > system by orientation matrix multiplication. There is a file in the
> > file section of the group “Small Examples/Coordinates
> > Transformations” that explain how to do it. Notice that you will
> > probably have to transform the vector in global coordinates first and
> > then from the global to the pelvis coordinates system.
> >
> > Best regards,
> > Sylvain, AnyBody Support.
> >
> >
> >
> > — In anyscript@yahoogroups.com, yuening ma <yueningma@> wrote:
> > >
> > > Sylvain!
> > > thks for the message. how could I get the practcial hip reaction
> > forces when taking the frame of pelivs into account?
> > > waiting for your message
> > >
> > > regards
> > > Alec
> > >
> > >
> > >
> > >
> > > ----- 原始邮件 ----
> > > å?`件人ï¼? AnyBody Support <support@>

?"¶ä»¶äººï¼š anyscript@yahoogroups.com
å·²å?é€?: 2008/6/30(å¨ä¸€), 下å?ˆ9:30:04
> > > 主题� [AnyScript] Re: Problem of obtaining joint forces by
> > gait3D
> > >
> > >
> > > Hi Alec,
> > >
> > > Just a small correction: the hip reaction force is displayed in the
> > > local frame of the femur and not in the frame of the pelvis as I
> > said
> > > in the previous message. Please take it into account.
> > >
> > > Best regards,
> > > Sylvain, AnyBody Support.
> > >
> > > — In anyscript@yahoogrou ps.com, “AnyBody Support” <support@ >
> > > wrote:
> > > >
> > > > Hi Alec,
> > > >
> > > > The reaction force on the hip has 3 components: Reaction.Fout[
> > 0],
> > > > Reaction.Fout[ 1] and Reaction.Fout[ 2]. Component [0] refer to
> > the
> > > > first axis (X in this case), components [1] refer to the second
> > > axis
> > > > (Y in this case) and component [2] refer to the third axis (Z in
> > > this
> > > > case). You can see in the legend box of the graph which colours
> > > > correspond to which component.
> > > > Notice that the forces are given in the local frame of the
> > pelvis.
> > > So
> > > > the axis [0], [1] and [2] are the X, Y and Z of the pelvis.
> > > >
> > > > I hope this makes it clear.
> > > >
> > > > Best regards,
> > > > Sylvain, AnyBody Support.
> > > >
> > > >
> > > >
> > > > — In anyscript@yahoogrou ps.com, “yueningma” <yueningma@> wrote:
> > > > >
> > > > > thanks for Søren and Jokke’s answer.
> > > > > To be honest, the curves about displacement and acceleration
> > > could
> > > > be
> > > > > learned easily.But about reaction forces of the body modeling
> > > seem a
> > > > > little different. For example,the hip joint forces.
> > > > > the hip joint is a sphere joint and have 3 degrees of freedom.
> > > when
> > > > > studing the joint forces, the curves in ChartFX window could be
> > > got
> > > > > with the legend. the colors of force curve respesnt the same
> > > > > dircetions as the displacements’ .
> > > > > Actualy, the hip joint force is devided into 3 directions. but
> > > how
> > > > to
> > > > > decide the exact one for each axis.
> > > > >
> > > > > how can i learn it in detail?
> > > > >
> > > > > Regards
> > > > >
> > > > > Alec
> > > > >
> > > > >
> > > > > — In anyscript@yahoogrou ps.com, “AnyBody Support” <support@>
> > > > wrote:
> > > > > >
> > > > > > Hi Alec
> > > > > >
> > > > > >
> > > > > >
> > > > > > In the ChartFX window you can click on an icon which looks
> > like
> > > a
> > > > > table, if
> > > > > > you hold the mouse over this icon it will say Data Editor,
> > this
> > > > will
> > > > > display
> > > > > > a table below the graph which will contain legends for the
> > > > plotted data.
> > > > > > This will allow you to see which colors are representing the
> > > data.
> > > > > >
> > > > > >
> > > > > >
> > > > > > Regarding the other question, I agree with Jokke, more info
> > is
> > > > needed.
> > > > > >
> > > > > >
> > > > > >
> > > > > > Best regards
> > > > > >
> > > > > > Søren
> > > > > >
> > > > > >
> > > > > >
> > > > > > _____
> > > > > >
> > > > > > From: anyscript@yahoogrou ps.com
> > > [mailto:anyscript@yahoogrou ps.com]
> > > > > On Behalf
> > > > > > Of joakim_holmberg
> > > > > > Sent: 27 June 2008 08:39
> > > > > > To: anyscript@yahoogrou ps.com
> > > > > > Subject: [AnyScript] Re: Problem of obtaining joint forces by
> > > > gait3D
> > > > > >
> > > > > >
> > > > > >
> > > > > > Hello.
> > > > > > I might have misunderstod your questions totally. With that
> > > said
> > > > I’ll
> > > > > > go on.
> > > > > > Usually, the different colors of the curves descibe forces,
> > > > > > accelerations etc in different coordinates (directions) . How
> > to
> > > > get
> > > > > > reasonable results? Well, I think you need to supply more
> > input
> > > > to be
> > > > > > able to get help from anyone.
> > > > > > /jokke (Sockertoppen Labs)
> > > > > >
> > > > > > — In anyscript@yahoogrou <mailto:anyscript% 40yahoogroups.
> > com>
> > > > ps.com,
> > > > > > “yueningma” <yueningma@> wrote:
> > > > > > >
> > > > > > > Hello.
> > > > > > > Those days the gait3D model is used to get joint forces
> > such
> > > as
> > > > > > > hip,ankle and so on. The model is computed with the markers’
> > > > > > > displacement values and force plate data. But how to get
> > the
> > > > reasonal
> > > > > > > results?
> > > > > > > Also when analysing used the model , from chartFX window
> > > > reaction
> > > > > > > forces of a contrsain ,such as in hip joint folder, could
> > be
> > > > got. What
> > > > > > > are the different curves mean? The red ,yellow curves are
> > for
> > > > what? I
> > > > > > > am exhausted.
> > > > > > >
> > > > > > > regrads.
> > > > > > >
> > > > > > >
> > > > > > > Alec
> > > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > [Non-text portions of this message have been removed]
> > > > > >
> > > > >
> > > >
> > >
> > >
> > >
> > >
> > > ___________________________________________________________
> > > 雅虎邮箱,您的终?"Ÿé‚®ç®±ï¼?
> > > http://cn.mail.yahoo.com/
> > >
> > > [Non-text portions of this message have been removed]
> > >
> >
>

Hi Alec,

The weight of the upper body including the pelvis is approximately
2/3 of the total body weight. So a quick calculation in the case of a
static standing posture will give about 1/3 of the body weight on
each hip joint. In the case of the model doing a circumduction the
reaction force will increase due to the centre of mass balancing from
one side to the other and loading alternatively the hip joints.
So it sound normal to me that the results for the hip reaction force
is somewhere between 1/3 and 1/2 of the body weight.

Best regards,
Sylvain, AnyBody Support.

— In anyscript@yahoogroups.com, “yueningma” <yueningma@…> wrote:
>
> Hi Sylvain!
> The solution 1 of you mentioned is used to compute the hip joint
> forces in the vertial direction for the standing case .
> Accoding to mechancial fundamentals,the right or left hip joint in
> vertical is about 1/4 weight.But acturally, with the solution,the
> result obtained is about one half of the body weight.
> The running program is
> “\Repository.6.2\Repository.6.2
\ARep\Aalborg\StandingModelCircumduction”.
> what should I do?
>
> with regards
> Alec
>
>
>
> — In anyscript@yahoogroups.com, “AnyBody Support” <support@>
wrote:
> >
> >
> > Hi Alec,
> >
> > To see the reaction forces of the hip in the pelvis local frame
you
> > have two solutions:
> >
> > 1 - In the definition of the hip joint (Body/AAUHuman/Leg/Jnt)
you
> > can switch around the order of the two nodes, the first one to be
> > declared is giving the reference frame. Right now the node on the
> > femur is the first. Switch to have the pelvis node declared first
and
> > the reaction forces will be displayed in the pelvis frame.
> >
> > 2 ? Transform the reaction forces vector to the pelvis
coordinate
> > system by orientation matrix multiplication. There is a file in
the
> > file section of the group “Small Examples/Coordinates
> > Transformations” that explain how to do it. Notice that you will
> > probably have to transform the vector in global coordinates first
and
> > then from the global to the pelvis coordinates system.
> >
> > Best regards,
> > Sylvain, AnyBody Support.
> >
> >
> >
> > — In anyscript@yahoogroups.com, yuening ma <yueningma@> wrote:
> > >
> > > Sylvain!
> > > thks for the message. how could I get the practcial hip
reaction
> > forces when taking the frame of pelivs into account?
> > > waiting for your message
> > >
> > > regards
> > > Alec
> > >
> > >
> > >
> > >
> > > ----- 原始邮件 ----
> > > å?`件人ï¼? AnyBody Support <support@>

?"¶ä»¶äººï¼š anyscript@yahoogroups.com
å·²å?é€?: 2008/6/30(å¨ä¸€), 下å?ˆ9:30:04
> > > 主题� [AnyScript] Re: Problem of obtaining joint forces
by
> > gait3D
> > >
> > >
> > > Hi Alec,
> > >
> > > Just a small correction: the hip reaction force is displayed in
the
> > > local frame of the femur and not in the frame of the pelvis as
I
> > said
> > > in the previous message. Please take it into account.
> > >
> > > Best regards,
> > > Sylvain, AnyBody Support.
> > >
> > > — In anyscript@yahoogrou ps.com, “AnyBody Support” <support@
>
> > > wrote:
> > > >
> > > > Hi Alec,
> > > >
> > > > The reaction force on the hip has 3 components: Reaction.Fout
[
> > 0],
> > > > Reaction.Fout[ 1] and Reaction.Fout[ 2]. Component [0] refer
to
> > the
> > > > first axis (X in this case), components [1] refer to the
second
> > > axis
> > > > (Y in this case) and component [2] refer to the third axis (Z
in
> > > this
> > > > case). You can see in the legend box of the graph which
colours
> > > > correspond to which component.
> > > > Notice that the forces are given in the local frame of the
> > pelvis.
> > > So
> > > > the axis [0], [1] and [2] are the X, Y and Z of the pelvis.
> > > >
> > > > I hope this makes it clear.
> > > >
> > > > Best regards,
> > > > Sylvain, AnyBody Support.
> > > >
> > > >
> > > >
> > > > — In anyscript@yahoogrou ps.com, “yueningma” <yueningma@>
wrote:
> > > > >
> > > > > thanks for Søren and Jokke’s answer.
> > > > > To be honest, the curves about displacement and
acceleration
> > > could
> > > > be
> > > > > learned easily.But about reaction forces of the body
modeling
> > > seem a
> > > > > little different. For example,the hip joint forces.
> > > > > the hip joint is a sphere joint and have 3 degrees of
freedom.
> > > when
> > > > > studing the joint forces, the curves in ChartFX window
could be
> > > got
> > > > > with the legend. the colors of force curve respesnt the same
> > > > > dircetions as the displacements’ .
> > > > > Actualy, the hip joint force is devided into 3 directions.
but
> > > how
> > > > to
> > > > > decide the exact one for each axis.
> > > > >
> > > > > how can i learn it in detail?
> > > > >
> > > > > Regards
> > > > >
> > > > > Alec
> > > > >
> > > > >
> > > > > — In anyscript@yahoogrou ps.com, “AnyBody Support”
<support@>
> > > > wrote:
> > > > > >
> > > > > > Hi Alec
> > > > > >
> > > > > >
> > > > > >
> > > > > > In the ChartFX window you can click on an icon which
looks
> > like
> > > a
> > > > > table, if
> > > > > > you hold the mouse over this icon it will say Data
Editor,
> > this
> > > > will
> > > > > display
> > > > > > a table below the graph which will contain legends for
the
> > > > plotted data.
> > > > > > This will allow you to see which colors are representing
the
> > > data.
> > > > > >
> > > > > >
> > > > > >
> > > > > > Regarding the other question, I agree with Jokke, more
info
> > is
> > > > needed.
> > > > > >
> > > > > >
> > > > > >
> > > > > > Best regards
> > > > > >
> > > > > > Søren
> > > > > >
> > > > > >
> > > > > >
> > > > > > _____
> > > > > >
> > > > > > From: anyscript@yahoogrou ps.com
> > > [mailto:anyscript@yahoogrou ps.com]
> > > > > On Behalf
> > > > > > Of joakim_holmberg
> > > > > > Sent: 27 June 2008 08:39
> > > > > > To: anyscript@yahoogrou ps.com
> > > > > > Subject: [AnyScript] Re: Problem of obtaining joint
forces by
> > > > gait3D
> > > > > >
> > > > > >
> > > > > >
> > > > > > Hello.
> > > > > > I might have misunderstod your questions totally. With
that
> > > said
> > > > I’ll
> > > > > > go on.
> > > > > > Usually, the different colors of the curves descibe
forces,
> > > > > > accelerations etc in different coordinates (directions) .
How
> > to
> > > > get
> > > > > > reasonable results? Well, I think you need to supply more
> > input
> > > > to be
> > > > > > able to get help from anyone.
> > > > > > /jokke (Sockertoppen Labs)
> > > > > >
> > > > > > — In anyscript@yahoogrou <mailto:anyscript%
40yahoogroups.
> > com>
> > > > ps.com,
> > > > > > “yueningma” <yueningma@> wrote:
> > > > > > >
> > > > > > > Hello.
> > > > > > > Those days the gait3D model is used to get joint forces
> > such
> > > as
> > > > > > > hip,ankle and so on. The model is computed with the
markers’
> > > > > > > displacement values and force plate data. But how to
get
> > the
> > > > reasonal
> > > > > > > results?
> > > > > > > Also when analysing used the model , from chartFX
window
> > > > reaction
> > > > > > > forces of a contrsain ,such as in hip joint folder,
could
> > be
> > > > got. What
> > > > > > > are the different curves mean? The red ,yellow curves
are
> > for
> > > > what? I
> > > > > > > am exhausted.
> > > > > > >
> > > > > > > regrads.
> > > > > > >
> > > > > > >
> > > > > > > Alec
> > > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > [Non-text portions of this message have been removed]
> > > > > >
> > > > >
> > > >
> > >
> > >
> > >
> > >
> > >


> > > 雅虎邮箱,您的终?"Ÿé‚®ç®±ï¼?
> > > http://cn.mail.yahoo.com/
> > >
> > > [Non-text portions of this message have been removed]
> > >
> >
>

Hi Alec,

The reaction force given for the hip joint is the representation of
the contact forces of the joint. This means they are “linear” forces,
not moments. Actually there are no moments provided by the joint
itself because it is a spherical joint allowing the three rotations
(moments are provided by muscles).
So in the case of the hip joint the forces are given in N.

Best regards,
Sylvain, AnyBody Support.

— In anyscript@yahoogroups.com, “yueningma” <yueningma@…> wrote:
>
> Hi!
> Also in the model, the reference is the rotate joint- hip joint.that
> is , unit of the computing force for hip joint is ‘N.m’. what I said
> is right? If I want to the hip joint force whose unit is ‘N’. what
> shall I do?
> with regards
> Alec
>
>
>
> — In anyscript@yahoogroups.com, “yueningma” <yueningma@> wrote:
> >
> > Hi Sylvain!
> > The solution 1 of you mentioned is used to compute the hip joint
> > forces in the vertial direction for the standing case .
> > Accoding to mechancial fundamentals,the right or left hip joint in
> > vertical is about 1/4 weight.But acturally, with the solution,the
> > result obtained is about one half of the body weight.
> > The running program is
> >
> “\Repository.6.2\Repository.6.2
\ARep\Aalborg\StandingModelCircumduction”.
> > what should I do?
> >
> > with regards
> > Alec
> >
> >
> >
> > — In anyscript@yahoogroups.com, “AnyBody Support” <support@>
wrote:
> > >
> > >
> > > Hi Alec,
> > >
> > > To see the reaction forces of the hip in the pelvis local frame
you
> > > have two solutions:
> > >
> > > 1 - In the definition of the hip joint (Body/AAUHuman/Leg/Jnt)
you
> > > can switch around the order of the two nodes, the first one to
be
> > > declared is giving the reference frame. Right now the node on
the
> > > femur is the first. Switch to have the pelvis node declared
first and
> > > the reaction forces will be displayed in the pelvis frame.
> > >
> > > 2 ? Transform the reaction forces vector to the pelvis
coordinate
> > > system by orientation matrix multiplication. There is a file in
the
> > > file section of the group “Small Examples/Coordinates
> > > Transformations” that explain how to do it. Notice that you
will
> > > probably have to transform the vector in global coordinates
first and
> > > then from the global to the pelvis coordinates system.
> > >
> > > Best regards,
> > > Sylvain, AnyBody Support.
> > >
> > >
> > >
> > > — In anyscript@yahoogroups.com, yuening ma <yueningma@> wrote:
> > > >
> > > > Sylvain!
> > > > thks for the message. how could I get the practcial hip
reaction
> > > forces when taking the frame of pelivs into account?
> > > > waiting for your message
> > > >
> > > > regards
> > > > Alec
> > > >
> > > >
> > > >
> > > >
> > > > ----- 原始邮件 ----
> > > > å?`件人ï¼? AnyBody Support <support@>

?"¶ä»¶äººï¼š anyscript@yahoogroups.com
å·²å?é€?: 2008/6/30(å¨ä¸€), 下å?ˆ9:30:04
> > > > 主题� [AnyScript] Re: Problem of obtaining joint
forces by
> > > gait3D
> > > >
> > > >
> > > > Hi Alec,
> > > >
> > > > Just a small correction: the hip reaction force is displayed
in the
> > > > local frame of the femur and not in the frame of the pelvis
as I
> > > said
> > > > in the previous message. Please take it into account.
> > > >
> > > > Best regards,
> > > > Sylvain, AnyBody Support.
> > > >
> > > > — In anyscript@yahoogrou ps.com, “AnyBody Support”
<support@ >
> > > > wrote:
> > > > >
> > > > > Hi Alec,
> > > > >
> > > > > The reaction force on the hip has 3 components:
Reaction.Fout[
> > > 0],
> > > > > Reaction.Fout[ 1] and Reaction.Fout[ 2]. Component [0]
refer to
> > > the
> > > > > first axis (X in this case), components [1] refer to the
second
> > > > axis
> > > > > (Y in this case) and component [2] refer to the third axis
(Z in
> > > > this
> > > > > case). You can see in the legend box of the graph which
colours
> > > > > correspond to which component.
> > > > > Notice that the forces are given in the local frame of the
> > > pelvis.
> > > > So
> > > > > the axis [0], [1] and [2] are the X, Y and Z of the pelvis.
> > > > >
> > > > > I hope this makes it clear.
> > > > >
> > > > > Best regards,
> > > > > Sylvain, AnyBody Support.
> > > > >
> > > > >
> > > > >
> > > > > — In anyscript@yahoogrou ps.com, “yueningma” <yueningma@>
wrote:
> > > > > >
> > > > > > thanks for Søren and Jokke’s answer.
> > > > > > To be honest, the curves about displacement and
acceleration
> > > > could
> > > > > be
> > > > > > learned easily.But about reaction forces of the body
modeling
> > > > seem a
> > > > > > little different. For example,the hip joint forces.
> > > > > > the hip joint is a sphere joint and have 3 degrees of
freedom.
> > > > when
> > > > > > studing the joint forces, the curves in ChartFX window
could be
> > > > got
> > > > > > with the legend. the colors of force curve respesnt the
same
> > > > > > dircetions as the displacements’ .
> > > > > > Actualy, the hip joint force is devided into 3
directions. but
> > > > how
> > > > > to
> > > > > > decide the exact one for each axis.
> > > > > >
> > > > > > how can i learn it in detail?
> > > > > >
> > > > > > Regards
> > > > > >
> > > > > > Alec
> > > > > >
> > > > > >
> > > > > > — In anyscript@yahoogrou ps.com, “AnyBody Support”
<support@>
> > > > > wrote:
> > > > > > >
> > > > > > > Hi Alec
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > In the ChartFX window you can click on an icon which
looks
> > > like
> > > > a
> > > > > > table, if
> > > > > > > you hold the mouse over this icon it will say Data
Editor,
> > > this
> > > > > will
> > > > > > display
> > > > > > > a table below the graph which will contain legends for
the
> > > > > plotted data.
> > > > > > > This will allow you to see which colors are
representing the
> > > > data.
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > Regarding the other question, I agree with Jokke, more
info
> > > is
> > > > > needed.
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > Best regards
> > > > > > >
> > > > > > > Søren
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > _____
> > > > > > >
> > > > > > > From: anyscript@yahoogrou ps.com
> > > > [mailto:anyscript@yahoogrou ps.com]
> > > > > > On Behalf
> > > > > > > Of joakim_holmberg
> > > > > > > Sent: 27 June 2008 08:39
> > > > > > > To: anyscript@yahoogrou ps.com
> > > > > > > Subject: [AnyScript] Re: Problem of obtaining joint
forces by
> > > > > gait3D
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > Hello.
> > > > > > > I might have misunderstod your questions totally. With
that
> > > > said
> > > > > I’ll
> > > > > > > go on.
> > > > > > > Usually, the different colors of the curves descibe
forces,
> > > > > > > accelerations etc in different coordinates
(directions) . How
> > > to
> > > > > get
> > > > > > > reasonable results? Well, I think you need to supply
more
> > > input
> > > > > to be
> > > > > > > able to get help from anyone.
> > > > > > > /jokke (Sockertoppen Labs)
> > > > > > >
> > > > > > > — In anyscript@yahoogrou <mailto:anyscript%
40yahoogroups.
> > > com>
> > > > > ps.com,
> > > > > > > “yueningma” <yueningma@> wrote:
> > > > > > > >
> > > > > > > > Hello.
> > > > > > > > Those days the gait3D model is used to get joint
forces
> > > such
> > > > as
> > > > > > > > hip,ankle and so on. The model is computed with the
markers’
> > > > > > > > displacement values and force plate data. But how to
get
> > > the
> > > > > reasonal
> > > > > > > > results?
> > > > > > > > Also when analysing used the model , from chartFX
window
> > > > > reaction
> > > > > > > > forces of a contrsain ,such as in hip joint folder,
could
> > > be
> > > > > got. What
> > > > > > > > are the different curves mean? The red ,yellow curves
are
> > > for
> > > > > what? I
> > > > > > > > am exhausted.
> > > > > > > >
> > > > > > > > regrads.
> > > > > > > >
> > > > > > > >
> > > > > > > > Alec
> > > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > [Non-text portions of this message have been removed]
> > > > > > >
> > > > > >
> > > > >
> > > >
> > > >
> > > >
> > > >
> > > >


> > > > 雅虎邮箱,您的终?"Ÿé‚®ç®±ï¼?
> > > > http://cn.mail.yahoo.com/
> > > >
> > > > [Non-text portions of this message have been removed]
> > > >
> > >
> >
>

Hi!
Actually, for bettering understanding the gait model.
a experiment is done. A subject is standing staticly. and 15 points’
displacement and force on the foot are obtained.using the gait model,
hip joint forces, ankle joint forces and muscles could be got.
with standing conditions force of hip joint in vertical direction is
about 1300 N. In my opinion, it’s really far away from the theoritical.
In theory, during standing staticly, hip joint force in vertical
direction nearly about 1/3 weight. that is about 300N. Also ankle
joint force is far more. what’s wrong. with it? for it, what shall I
do? And your advice.

with regards
Alec

— In anyscript@yahoogroups.com, “AnyBody Support” <support@…> wrote:
>
> Hi Alec,
>
> The reaction force given for the hip joint is the representation of
> the contact forces of the joint. This means they are “linear” forces,
> not moments. Actually there are no moments provided by the joint
> itself because it is a spherical joint allowing the three rotations
> (moments are provided by muscles).
> So in the case of the hip joint the forces are given in N.
>
> Best regards,
> Sylvain, AnyBody Support.
>
>
>
> — In anyscript@yahoogroups.com, “yueningma” <yueningma@> wrote:
> >
> > Hi!
> > Also in the model, the reference is the rotate joint- hip joint.that
> > is , unit of the computing force for hip joint is ‘N.m’. what I said
> > is right? If I want to the hip joint force whose unit is ‘N’. what
> > shall I do?
> > with regards
> > Alec
> >
> >
> >
> > — In anyscript@yahoogroups.com, “yueningma” <yueningma@> wrote:
> > >
> > > Hi Sylvain!
> > > The solution 1 of you mentioned is used to compute the hip joint
> > > forces in the vertial direction for the standing case .
> > > Accoding to mechancial fundamentals,the right or left hip joint in
> > > vertical is about 1/4 weight.But acturally, with the solution,the
> > > result obtained is about one half of the body weight.
> > > The running program is
> > >
> > “\Repository.6.2\Repository.6.2
> \ARep\Aalborg\StandingModelCircumduction”.
> > > what should I do?
> > >
> > > with regards
> > > Alec
> > >
> > >
> > >
> > > — In anyscript@yahoogroups.com, “AnyBody Support” <support@>
> wrote:
> > > >
> > > >
> > > > Hi Alec,
> > > >
> > > > To see the reaction forces of the hip in the pelvis local frame
> you
> > > > have two solutions:
> > > >
> > > > 1 - In the definition of the hip joint (Body/AAUHuman/Leg/Jnt)
> you
> > > > can switch around the order of the two nodes, the first one to
> be
> > > > declared is giving the reference frame. Right now the node on
> the
> > > > femur is the first. Switch to have the pelvis node declared
> first and
> > > > the reaction forces will be displayed in the pelvis frame.
> > > >
> > > > 2 ? Transform the reaction forces vector to the pelvis
> coordinate
> > > > system by orientation matrix multiplication. There is a file in
> the
> > > > file section of the group “Small Examples/Coordinates
> > > > Transformations” that explain how to do it. Notice that you
> will
> > > > probably have to transform the vector in global coordinates
> first and
> > > > then from the global to the pelvis coordinates system.
> > > >
> > > > Best regards,
> > > > Sylvain, AnyBody Support.
> > > >
> > > >
> > > >
> > > > — In anyscript@yahoogroups.com, yuening ma <yueningma@> wrote:
> > > > >
> > > > > Sylvain!
> > > > > thks for the message. how could I get the practcial hip
> reaction
> > > > forces when taking the frame of pelivs into account?
> > > > > waiting for your message
> > > > >
> > > > > regards
> > > > > Alec
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > ----- 原始邮件 ----
> > > > > å?`件人ï¼? AnyBody Support <support@>

?"¶ä»¶äººï¼š anyscript@yahoogroups.com
å·²å?é€?: 2008/6/30(å¨ä¸€), 下å?ˆ9:30:04
> > > > > 主题� [AnyScript] Re: Problem of obtaining joint
> forces by
> > > > gait3D
> > > > >
> > > > >
> > > > > Hi Alec,
> > > > >
> > > > > Just a small correction: the hip reaction force is displayed
> in the
> > > > > local frame of the femur and not in the frame of the pelvis
> as I
> > > > said
> > > > > in the previous message. Please take it into account.
> > > > >
> > > > > Best regards,
> > > > > Sylvain, AnyBody Support.
> > > > >
> > > > > — In anyscript@yahoogrou ps.com, “AnyBody Support”
> <support@ >
> > > > > wrote:
> > > > > >
> > > > > > Hi Alec,
> > > > > >
> > > > > > The reaction force on the hip has 3 components:
> Reaction.Fout[
> > > > 0],
> > > > > > Reaction.Fout[ 1] and Reaction.Fout[ 2]. Component [0]
> refer to
> > > > the
> > > > > > first axis (X in this case), components [1] refer to the
> second
> > > > > axis
> > > > > > (Y in this case) and component [2] refer to the third axis
> (Z in
> > > > > this
> > > > > > case). You can see in the legend box of the graph which
> colours
> > > > > > correspond to which component.
> > > > > > Notice that the forces are given in the local frame of the
> > > > pelvis.
> > > > > So
> > > > > > the axis [0], [1] and [2] are the X, Y and Z of the pelvis.
> > > > > >
> > > > > > I hope this makes it clear.
> > > > > >
> > > > > > Best regards,
> > > > > > Sylvain, AnyBody Support.
> > > > > >
> > > > > >
> > > > > >
> > > > > > — In anyscript@yahoogrou ps.com, “yueningma” <yueningma@>
> wrote:
> > > > > > >
> > > > > > > thanks for Søren and Jokke’s answer.
> > > > > > > To be honest, the curves about displacement and
> acceleration
> > > > > could
> > > > > > be
> > > > > > > learned easily.But about reaction forces of the body
> modeling
> > > > > seem a
> > > > > > > little different. For example,the hip joint forces.
> > > > > > > the hip joint is a sphere joint and have 3 degrees of
> freedom.
> > > > > when
> > > > > > > studing the joint forces, the curves in ChartFX window
> could be
> > > > > got
> > > > > > > with the legend. the colors of force curve respesnt the
> same
> > > > > > > dircetions as the displacements’ .
> > > > > > > Actualy, the hip joint force is devided into 3
> directions. but
> > > > > how
> > > > > > to
> > > > > > > decide the exact one for each axis.
> > > > > > >
> > > > > > > how can i learn it in detail?
> > > > > > >
> > > > > > > Regards
> > > > > > >
> > > > > > > Alec
> > > > > > >
> > > > > > >
> > > > > > > — In anyscript@yahoogrou ps.com, “AnyBody Support”
> <support@>
> > > > > > wrote:
> > > > > > > >
> > > > > > > > Hi Alec
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > > In the ChartFX window you can click on an icon which
> looks
> > > > like
> > > > > a
> > > > > > > table, if
> > > > > > > > you hold the mouse over this icon it will say Data
> Editor,
> > > > this
> > > > > > will
> > > > > > > display
> > > > > > > > a table below the graph which will contain legends for
> the
> > > > > > plotted data.
> > > > > > > > This will allow you to see which colors are
> representing the
> > > > > data.
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > > Regarding the other question, I agree with Jokke, more
> info
> > > > is
> > > > > > needed.
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > > Best regards
> > > > > > > >
> > > > > > > > Søren
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > > _____
> > > > > > > >
> > > > > > > > From: anyscript@yahoogrou ps.com
> > > > > [mailto:anyscript@yahoogrou ps.com]
> > > > > > > On Behalf
> > > > > > > > Of joakim_holmberg
> > > > > > > > Sent: 27 June 2008 08:39
> > > > > > > > To: anyscript@yahoogrou ps.com
> > > > > > > > Subject: [AnyScript] Re: Problem of obtaining joint
> forces by
> > > > > > gait3D
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > > Hello.
> > > > > > > > I might have misunderstod your questions totally. With
> that
> > > > > said
> > > > > > I’ll
> > > > > > > > go on.
> > > > > > > > Usually, the different colors of the curves descibe
> forces,
> > > > > > > > accelerations etc in different coordinates
> (directions) . How
> > > > to
> > > > > > get
> > > > > > > > reasonable results? Well, I think you need to supply
> more
> > > > input
> > > > > > to be
> > > > > > > > able to get help from anyone.
> > > > > > > > /jokke (Sockertoppen Labs)
> > > > > > > >
> > > > > > > > — In anyscript@yahoogrou <mailto:anyscript%
> 40yahoogroups.
> > > > com>
> > > > > > ps.com,
> > > > > > > > “yueningma” <yueningma@> wrote:
> > > > > > > > >
> > > > > > > > > Hello.
> > > > > > > > > Those days the gait3D model is used to get joint
> forces
> > > > such
> > > > > as
> > > > > > > > > hip,ankle and so on. The model is computed with the
> markers’
> > > > > > > > > displacement values and force plate data. But how to
> get
> > > > the
> > > > > > reasonal
> > > > > > > > > results?
> > > > > > > > > Also when analysing used the model , from chartFX
> window
> > > > > > reaction
> > > > > > > > > forces of a contrsain ,such as in hip joint folder,
> could
> > > > be
> > > > > > got. What
> > > > > > > > > are the different curves mean? The red ,yellow curves
> are
> > > > for
> > > > > > what? I
> > > > > > > > > am exhausted.
> > > > > > > > >
> > > > > > > > > regrads.
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > Alec
> > > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > > [Non-text portions of this message have been removed]
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> ___________________________________________________________
> > > > > 雅虎邮箱,您的终?"Ÿé‚®ç®±ï¼?
> > > > > http://cn.mail.yahoo.com/
> > > > >
> > > > > [Non-text portions of this message have been removed]
> > > > >
> > > >
> > >
> >
>

Hi Alec,

I thought you was running the model without muscle like in some
previous posting if I remember well. It seems now that you are
including the muscles. The quick approximation of 1/3 of the body
weight for the hip reaction force is only valid for the model without
muscle because only the weight is taken into account in this simple
calculation.

In a model with muscles there are several muscles spanning from the
femur to the pelvis, those muscles are creating forces and those
forces are directly transmitted to the hip joint. So the hip reaction
force will increase and vary a lot depending on the posture and the
motion. Therefore it becomes impossible to predict the hip reaction
force manually. It is a very complex calculation that only the system
can resolve.

That mean you have to trust the values that the program gives you.
Our model has been validated toward several experiments of the
literature so we know the result are correct and reflect with enough
accuracy the behaviour of the real human body.

Best regards,
Sylvain, AnyBody Support.

— In anyscript@yahoogroups.com, “yueningma” <yueningma@…> wrote:
>
> Hi!
> Actually, for bettering understanding the gait model.
> a experiment is done. A subject is standing staticly. and 15 points’
> displacement and force on the foot are obtained.using the gait
model,
> hip joint forces, ankle joint forces and muscles could be got.
> with standing conditions force of hip joint in vertical direction is
> about 1300 N. In my opinion, it’s really far away from the
theoritical.
> In theory, during standing staticly, hip joint force in vertical
> direction nearly about 1/3 weight. that is about 300N. Also ankle
> joint force is far more. what’s wrong. with it? for it, what shall I
> do? And your advice.
>
> with regards
> Alec
>
>
>
> — In anyscript@yahoogroups.com, “AnyBody Support” <support@>
wrote:
> >
> > Hi Alec,
> >
> > The reaction force given for the hip joint is the representation
of
> > the contact forces of the joint. This means they are “linear”
forces,
> > not moments. Actually there are no moments provided by the joint
> > itself because it is a spherical joint allowing the three
rotations
> > (moments are provided by muscles).
> > So in the case of the hip joint the forces are given in N.
> >
> > Best regards,
> > Sylvain, AnyBody Support.
> >
> >
> >
> > — In anyscript@yahoogroups.com, “yueningma” <yueningma@> wrote:
> > >
> > > Hi!
> > > Also in the model, the reference is the rotate joint- hip
joint.that
> > > is , unit of the computing force for hip joint is ‘N.m’. what I
said
> > > is right? If I want to the hip joint force whose unit is ‘N’.
what
> > > shall I do?
> > > with regards
> > > Alec
> > >
> > >
> > >
> > > — In anyscript@yahoogroups.com, “yueningma” <yueningma@>
wrote:
> > > >
> > > > Hi Sylvain!
> > > > The solution 1 of you mentioned is used to compute the hip
joint
> > > > forces in the vertial direction for the standing case .
> > > > Accoding to mechancial fundamentals,the right or left hip
joint in
> > > > vertical is about 1/4 weight.But acturally, with the
solution,the
> > > > result obtained is about one half of the body weight.
> > > > The running program is
> > > >
> > > “\Repository.6.2\Repository.6.2
> > \ARep\Aalborg\StandingModelCircumduction”.
> > > > what should I do?
> > > >
> > > > with regards
> > > > Alec
> > > >
> > > >
> > > >
> > > > — In anyscript@yahoogroups.com, “AnyBody Support”
<support@>
> > wrote:
> > > > >
> > > > >
> > > > > Hi Alec,
> > > > >
> > > > > To see the reaction forces of the hip in the pelvis local
frame
> > you
> > > > > have two solutions:
> > > > >
> > > > > 1 - In the definition of the hip joint
(Body/AAUHuman/Leg/Jnt)
> > you
> > > > > can switch around the order of the two nodes, the first one
to
> > be
> > > > > declared is giving the reference frame. Right now the node
on
> > the
> > > > > femur is the first. Switch to have the pelvis node declared
> > first and
> > > > > the reaction forces will be displayed in the pelvis frame.
> > > > >
> > > > > 2 ? Transform the reaction forces vector to the pelvis
> > coordinate
> > > > > system by orientation matrix multiplication. There is a
file in
> > the
> > > > > file section of the group “Small Examples/Coordinates
> > > > > Transformations” that explain how to do it. Notice that you
> > will
> > > > > probably have to transform the vector in global coordinates
> > first and
> > > > > then from the global to the pelvis coordinates system.
> > > > >
> > > > > Best regards,
> > > > > Sylvain, AnyBody Support.
> > > > >
> > > > >
> > > > >
> > > > > — In anyscript@yahoogroups.com, yuening ma <yueningma@>
wrote:
> > > > > >
> > > > > > Sylvain!
> > > > > > thks for the message. how could I get the practcial hip
> > reaction
> > > > > forces when taking the frame of pelivs into account?
> > > > > > waiting for your message
> > > > > >
> > > > > > regards
> > > > > > Alec
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > ----- 原始邮件 ----
> > > > > > å?`件人ï¼? AnyBody Support <support@>

?"¶ä»¶äººï¼š anyscript@yahoogroups.com
å·²å?é€?: 2008/6/30(å¨ä¸€), 下å?ˆ9:30:04
> > > > > > 主题� [AnyScript] Re: Problem of obtaining joint
> > forces by
> > > > > gait3D
> > > > > >
> > > > > >
> > > > > > Hi Alec,
> > > > > >
> > > > > > Just a small correction: the hip reaction force is
displayed
> > in the
> > > > > > local frame of the femur and not in the frame of the
pelvis
> > as I
> > > > > said
> > > > > > in the previous message. Please take it into account.
> > > > > >
> > > > > > Best regards,
> > > > > > Sylvain, AnyBody Support.
> > > > > >
> > > > > > — In anyscript@yahoogrou ps.com, “AnyBody Support”
> > <support@ >
> > > > > > wrote:
> > > > > > >
> > > > > > > Hi Alec,
> > > > > > >
> > > > > > > The reaction force on the hip has 3 components:
> > Reaction.Fout[
> > > > > 0],
> > > > > > > Reaction.Fout[ 1] and Reaction.Fout[ 2]. Component [0]
> > refer to
> > > > > the
> > > > > > > first axis (X in this case), components [1] refer to
the
> > second
> > > > > > axis
> > > > > > > (Y in this case) and component [2] refer to the third
axis
> > (Z in
> > > > > > this
> > > > > > > case). You can see in the legend box of the graph which
> > colours
> > > > > > > correspond to which component.
> > > > > > > Notice that the forces are given in the local frame of
the
> > > > > pelvis.
> > > > > > So
> > > > > > > the axis [0], [1] and [2] are the X, Y and Z of the
pelvis.
> > > > > > >
> > > > > > > I hope this makes it clear.
> > > > > > >
> > > > > > > Best regards,
> > > > > > > Sylvain, AnyBody Support.
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > — In anyscript@yahoogrou ps.com, “yueningma”
<yueningma@>
> > wrote:
> > > > > > > >
> > > > > > > > thanks for Søren and Jokke’s answer.
> > > > > > > > To be honest, the curves about displacement and
> > acceleration
> > > > > > could
> > > > > > > be
> > > > > > > > learned easily.But about reaction forces of the body
> > modeling
> > > > > > seem a
> > > > > > > > little different. For example,the hip joint forces.
> > > > > > > > the hip joint is a sphere joint and have 3 degrees of
> > freedom.
> > > > > > when
> > > > > > > > studing the joint forces, the curves in ChartFX
window
> > could be
> > > > > > got
> > > > > > > > with the legend. the colors of force curve respesnt
the
> > same
> > > > > > > > dircetions as the displacements’ .
> > > > > > > > Actualy, the hip joint force is devided into 3
> > directions. but
> > > > > > how
> > > > > > > to
> > > > > > > > decide the exact one for each axis.
> > > > > > > >
> > > > > > > > how can i learn it in detail?
> > > > > > > >
> > > > > > > > Regards
> > > > > > > >
> > > > > > > > Alec
> > > > > > > >
> > > > > > > >
> > > > > > > > — In anyscript@yahoogrou ps.com, “AnyBody Support”
> > <support@>
> > > > > > > wrote:
> > > > > > > > >
> > > > > > > > > Hi Alec
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > In the ChartFX window you can click on an icon
which
> > looks
> > > > > like
> > > > > > a
> > > > > > > > table, if
> > > > > > > > > you hold the mouse over this icon it will say Data
> > Editor,
> > > > > this
> > > > > > > will
> > > > > > > > display
> > > > > > > > > a table below the graph which will contain legends
for
> > the
> > > > > > > plotted data.
> > > > > > > > > This will allow you to see which colors are
> > representing the
> > > > > > data.
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > Regarding the other question, I agree with Jokke,
more
> > info
> > > > > is
> > > > > > > needed.
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > Best regards
> > > > > > > > >
> > > > > > > > > Søren
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > _____
> > > > > > > > >
> > > > > > > > > From: anyscript@yahoogrou ps.com
> > > > > > [mailto:anyscript@yahoogrou ps.com]
> > > > > > > > On Behalf
> > > > > > > > > Of joakim_holmberg
> > > > > > > > > Sent: 27 June 2008 08:39
> > > > > > > > > To: anyscript@yahoogrou ps.com
> > > > > > > > > Subject: [AnyScript] Re: Problem of obtaining joint
> > forces by
> > > > > > > gait3D
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > Hello.
> > > > > > > > > I might have misunderstod your questions totally.
With
> > that
> > > > > > said
> > > > > > > I’ll
> > > > > > > > > go on.
> > > > > > > > > Usually, the different colors of the curves descibe
> > forces,
> > > > > > > > > accelerations etc in different coordinates
> > (directions) . How
> > > > > to
> > > > > > > get
> > > > > > > > > reasonable results? Well, I think you need to
supply
> > more
> > > > > input
> > > > > > > to be
> > > > > > > > > able to get help from anyone.
> > > > > > > > > /jokke (Sockertoppen Labs)
> > > > > > > > >
> > > > > > > > > — In anyscript@yahoogrou <mailto:anyscript%
> > 40yahoogroups.
> > > > > com>
> > > > > > > ps.com,
> > > > > > > > > “yueningma” <yueningma@> wrote:
> > > > > > > > > >
> > > > > > > > > > Hello.
> > > > > > > > > > Those days the gait3D model is used to get joint
> > forces
> > > > > such
> > > > > > as
> > > > > > > > > > hip,ankle and so on. The model is computed with
the
> > markers’
> > > > > > > > > > displacement values and force plate data. But how
to
> > get
> > > > > the
> > > > > > > reasonal
> > > > > > > > > > results?
> > > > > > > > > > Also when analysing used the model , from chartFX
> > window
> > > > > > > reaction
> > > > > > > > > > forces of a contrsain ,such as in hip joint
folder,
> > could
> > > > > be
> > > > > > > got. What
> > > > > > > > > > are the different curves mean? The red ,yellow
curves
> > are
> > > > > for
> > > > > > > what? I
> > > > > > > > > > am exhausted.
> > > > > > > > > >
> > > > > > > > > > regrads.
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > > Alec
> > > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > [Non-text portions of this message have been
removed]
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > ___________________________________________________________
> > > > > > 雅虎邮箱,您的终?"Ÿé‚®ç®±ï¼?
> > > > > > http://cn.mail.yahoo.com/
> > > > > >
> > > > > > [Non-text portions of this message have been removed]
> > > > > >
> > > > >
> > > >
> > >
> >
>

Hi again Alec,

For further information it could be a good idea to refer to this
webcast : “Validation of Hip Joint Force Simulation by Gait Analysis
(Catherine Manders, 29. January, 2008)”.
Here is the link http://www.anybodytech.com/199.0.html

Best regards,
Sylvain, AnyBody Support.

— In anyscript@yahoogroups.com, “AnyBody Support” <support@…>
wrote:
>
> Hi Alec,
>
> I thought you was running the model without muscle like in some
> previous posting if I remember well. It seems now that you are
> including the muscles. The quick approximation of 1/3 of the body
> weight for the hip reaction force is only valid for the model
without
> muscle because only the weight is taken into account in this simple
> calculation.
>
> In a model with muscles there are several muscles spanning from the
> femur to the pelvis, those muscles are creating forces and those
> forces are directly transmitted to the hip joint. So the hip
reaction
> force will increase and vary a lot depending on the posture and the
> motion. Therefore it becomes impossible to predict the hip reaction
> force manually. It is a very complex calculation that only the
system
> can resolve.
>
> That mean you have to trust the values that the program gives you.
> Our model has been validated toward several experiments of the
> literature so we know the result are correct and reflect with
enough
> accuracy the behaviour of the real human body.
>
> Best regards,
> Sylvain, AnyBody Support.
>
>
>
>
>
> — In anyscript@yahoogroups.com, “yueningma” <yueningma@> wrote:
> >
> > Hi!
> > Actually, for bettering understanding the gait model.
> > a experiment is done. A subject is standing staticly. and 15
points’
> > displacement and force on the foot are obtained.using the gait
> model,
> > hip joint forces, ankle joint forces and muscles could be got.
> > with standing conditions force of hip joint in vertical direction
is
> > about 1300 N. In my opinion, it’s really far away from the
> theoritical.
> > In theory, during standing staticly, hip joint force in vertical
> > direction nearly about 1/3 weight. that is about 300N. Also ankle
> > joint force is far more. what’s wrong. with it? for it, what
shall I
> > do? And your advice.
> >
> > with regards
> > Alec
> >
> >
> >
> > — In anyscript@yahoogroups.com, “AnyBody Support” <support@>
> wrote:
> > >
> > > Hi Alec,
> > >
> > > The reaction force given for the hip joint is the
representation
> of
> > > the contact forces of the joint. This means they are “linear”
> forces,
> > > not moments. Actually there are no moments provided by the
joint
> > > itself because it is a spherical joint allowing the three
> rotations
> > > (moments are provided by muscles).
> > > So in the case of the hip joint the forces are given in N.
> > >
> > > Best regards,
> > > Sylvain, AnyBody Support.
> > >
> > >
> > >
> > > — In anyscript@yahoogroups.com, “yueningma” <yueningma@>
wrote:
> > > >
> > > > Hi!
> > > > Also in the model, the reference is the rotate joint- hip
> joint.that
> > > > is , unit of the computing force for hip joint is ‘N.m’. what
I
> said
> > > > is right? If I want to the hip joint force whose unit is ‘N’.
> what
> > > > shall I do?
> > > > with regards
> > > > Alec
> > > >
> > > >
> > > >
> > > > — In anyscript@yahoogroups.com, “yueningma” <yueningma@>
> wrote:
> > > > >
> > > > > Hi Sylvain!
> > > > > The solution 1 of you mentioned is used to compute the hip
> joint
> > > > > forces in the vertial direction for the standing case .
> > > > > Accoding to mechancial fundamentals,the right or left hip
> joint in
> > > > > vertical is about 1/4 weight.But acturally, with the
> solution,the
> > > > > result obtained is about one half of the body weight.
> > > > > The running program is
> > > > >
> > > > “\Repository.6.2\Repository.6.2
> > > \ARep\Aalborg\StandingModelCircumduction”.
> > > > > what should I do?
> > > > >
> > > > > with regards
> > > > > Alec
> > > > >
> > > > >
> > > > >
> > > > > — In anyscript@yahoogroups.com, “AnyBody Support”
> <support@>
> > > wrote:
> > > > > >
> > > > > >
> > > > > > Hi Alec,
> > > > > >
> > > > > > To see the reaction forces of the hip in the pelvis local
> frame
> > > you
> > > > > > have two solutions:
> > > > > >
> > > > > > 1 - In the definition of the hip joint
> (Body/AAUHuman/Leg/Jnt)
> > > you
> > > > > > can switch around the order of the two nodes, the first
one
> to
> > > be
> > > > > > declared is giving the reference frame. Right now the
node
> on
> > > the
> > > > > > femur is the first. Switch to have the pelvis node
declared
> > > first and
> > > > > > the reaction forces will be displayed in the pelvis frame.
> > > > > >
> > > > > > 2 ? Transform the reaction forces vector to the
pelvis
> > > coordinate
> > > > > > system by orientation matrix multiplication. There is a
> file in
> > > the
> > > > > > file section of the group “Small Examples/Coordinates
> > > > > > Transformations” that explain how to do it. Notice that
you
> > > will
> > > > > > probably have to transform the vector in global
coordinates
> > > first and
> > > > > > then from the global to the pelvis coordinates system.
> > > > > >
> > > > > > Best regards,
> > > > > > Sylvain, AnyBody Support.
> > > > > >
> > > > > >
> > > > > >
> > > > > > — In anyscript@yahoogroups.com, yuening ma <yueningma@>
> wrote:
> > > > > > >
> > > > > > > Sylvain!
> > > > > > > thks for the message. how could I get the practcial hip
> > > reaction
> > > > > > forces when taking the frame of pelivs into account?
> > > > > > > waiting for your message
> > > > > > >
> > > > > > > regards
> > > > > > > Alec
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > ----- 原始邮件 ----
> > > > > > > å?`件人ï¼? AnyBody Support <support@>

?"¶ä»¶äººï¼š anyscript@yahoogroups.com
å·²å?é€?: 2008/6/30(å¨ä¸€), 下å?ˆ9:30:04
> > > > > > > 主题� [AnyScript] Re: Problem of obtaining
joint
> > > forces by
> > > > > > gait3D
> > > > > > >
> > > > > > >
> > > > > > > Hi Alec,
> > > > > > >
> > > > > > > Just a small correction: the hip reaction force is
> displayed
> > > in the
> > > > > > > local frame of the femur and not in the frame of the
> pelvis
> > > as I
> > > > > > said
> > > > > > > in the previous message. Please take it into account.
> > > > > > >
> > > > > > > Best regards,
> > > > > > > Sylvain, AnyBody Support.
> > > > > > >
> > > > > > > — In anyscript@yahoogrou ps.com, “AnyBody Support”
> > > <support@ >
> > > > > > > wrote:
> > > > > > > >
> > > > > > > > Hi Alec,
> > > > > > > >
> > > > > > > > The reaction force on the hip has 3 components:
> > > Reaction.Fout[
> > > > > > 0],
> > > > > > > > Reaction.Fout[ 1] and Reaction.Fout[ 2]. Component
[0]
> > > refer to
> > > > > > the
> > > > > > > > first axis (X in this case), components [1] refer to
> the
> > > second
> > > > > > > axis
> > > > > > > > (Y in this case) and component [2] refer to the third
> axis
> > > (Z in
> > > > > > > this
> > > > > > > > case). You can see in the legend box of the graph
which
> > > colours
> > > > > > > > correspond to which component.
> > > > > > > > Notice that the forces are given in the local frame
of
> the
> > > > > > pelvis.
> > > > > > > So
> > > > > > > > the axis [0], [1] and [2] are the X, Y and Z of the
> pelvis.
> > > > > > > >
> > > > > > > > I hope this makes it clear.
> > > > > > > >
> > > > > > > > Best regards,
> > > > > > > > Sylvain, AnyBody Support.
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > > — In anyscript@yahoogrou ps.com, “yueningma”
> <yueningma@>
> > > wrote:
> > > > > > > > >
> > > > > > > > > thanks for Søren and Jokke’s answer.
> > > > > > > > > To be honest, the curves about displacement and
> > > acceleration
> > > > > > > could
> > > > > > > > be
> > > > > > > > > learned easily.But about reaction forces of the
body
> > > modeling
> > > > > > > seem a
> > > > > > > > > little different. For example,the hip joint forces.
> > > > > > > > > the hip joint is a sphere joint and have 3 degrees
of
> > > freedom.
> > > > > > > when
> > > > > > > > > studing the joint forces, the curves in ChartFX
> window
> > > could be
> > > > > > > got
> > > > > > > > > with the legend. the colors of force curve respesnt
> the
> > > same
> > > > > > > > > dircetions as the displacements’ .
> > > > > > > > > Actualy, the hip joint force is devided into 3
> > > directions. but
> > > > > > > how
> > > > > > > > to
> > > > > > > > > decide the exact one for each axis.
> > > > > > > > >
> > > > > > > > > how can i learn it in detail?
> > > > > > > > >
> > > > > > > > > Regards
> > > > > > > > >
> > > > > > > > > Alec
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > — In anyscript@yahoogrou ps.com, “AnyBody
Support”
> > > <support@>
> > > > > > > > wrote:
> > > > > > > > > >
> > > > > > > > > > Hi Alec
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > > In the ChartFX window you can click on an icon
> which
> > > looks
> > > > > > like
> > > > > > > a
> > > > > > > > > table, if
> > > > > > > > > > you hold the mouse over this icon it will say
Data
> > > Editor,
> > > > > > this
> > > > > > > > will
> > > > > > > > > display
> > > > > > > > > > a table below the graph which will contain
legends
> for
> > > the
> > > > > > > > plotted data.
> > > > > > > > > > This will allow you to see which colors are
> > > representing the
> > > > > > > data.
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > > Regarding the other question, I agree with Jokke,
> more
> > > info
> > > > > > is
> > > > > > > > needed.
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > > Best regards
> > > > > > > > > >
> > > > > > > > > > Søren
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > > _____
> > > > > > > > > >
> > > > > > > > > > From: anyscript@yahoogrou ps.com
> > > > > > > [mailto:anyscript@yahoogrou ps.com]
> > > > > > > > > On Behalf
> > > > > > > > > > Of joakim_holmberg
> > > > > > > > > > Sent: 27 June 2008 08:39
> > > > > > > > > > To: anyscript@yahoogrou ps.com
> > > > > > > > > > Subject: [AnyScript] Re: Problem of obtaining
joint
> > > forces by
> > > > > > > > gait3D
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > > Hello.
> > > > > > > > > > I might have misunderstod your questions totally.
> With
> > > that
> > > > > > > said
> > > > > > > > I’ll
> > > > > > > > > > go on.
> > > > > > > > > > Usually, the different colors of the curves
descibe
> > > forces,
> > > > > > > > > > accelerations etc in different coordinates
> > > (directions) . How
> > > > > > to
> > > > > > > > get
> > > > > > > > > > reasonable results? Well, I think you need to
> supply
> > > more
> > > > > > input
> > > > > > > > to be
> > > > > > > > > > able to get help from anyone.
> > > > > > > > > > /jokke (Sockertoppen Labs)
> > > > > > > > > >
> > > > > > > > > > — In anyscript@yahoogrou <mailto:anyscript%
> > > 40yahoogroups.
> > > > > > com>
> > > > > > > > ps.com,
> > > > > > > > > > “yueningma” <yueningma@> wrote:
> > > > > > > > > > >
> > > > > > > > > > > Hello.
> > > > > > > > > > > Those days the gait3D model is used to get
joint
> > > forces
> > > > > > such
> > > > > > > as
> > > > > > > > > > > hip,ankle and so on. The model is computed with
> the
> > > markers’
> > > > > > > > > > > displacement values and force plate data. But
how
> to
> > > get
> > > > > > the
> > > > > > > > reasonal
> > > > > > > > > > > results?
> > > > > > > > > > > Also when analysing used the model , from
chartFX
> > > window
> > > > > > > > reaction
> > > > > > > > > > > forces of a contrsain ,such as in hip joint
> folder,
> > > could
> > > > > > be
> > > > > > > > got. What
> > > > > > > > > > > are the different curves mean? The red ,yellow
> curves
> > > are
> > > > > > for
> > > > > > > > what? I
> > > > > > > > > > > am exhausted.
> > > > > > > > > > >
> > > > > > > > > > > regrads.
> > > > > > > > > > >
> > > > > > > > > > >
> > > > > > > > > > > Alec
> > > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > > [Non-text portions of this message have been
> removed]
> > > > > > > > > >
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > ___________________________________________________________
> > > > > > > 雅虎邮箱,您的终?"Ÿé‚®ç®±ï¼?
> > > > > > > http://cn.mail.yahoo.com/
> > > > > > >
> > > > > > > [Non-text portions of this message have been removed]
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>