I have been using AnyBody from the last few months only and I am still somewhat new. In the last few days I have been trying to understand the muscle strength data of the software and compare the results with real data. Specifically, I have been doing some simulations with the shoulder model to compare MVC values from AnyBody (at MMA = 1) and from literature. My problem has been that some of the cases (cases being different directions of force) match quite well, while some are quite far.
I am using AnyBody version 6.0.2 with AMMR 1.6.2
My question is: what kind of strength percentile does the shoulder model in AnyBody represent?
In the last days, I spent quite some time trying to understand the 3 element model used in AnyBody. While, I did not find the detailed description (I mean equations) describing the behaviour of the 3E muscle model in AnyBody, I tried to understand the different parameters used for the modelling. The parameter I am interested in is F0 (ideal muscle strength; strength at neutral fibre length).
In the 3E muscle model, F0 = Strength ScalePCSAMuscle Stress
Correct me if I am wrong, but, if I don’t use any scaling, Strength Scale = 1 for all the shoulder muscles. PCSA data has been obtained predominantly from cadaver studies (VU and MAYO, and a few others). While Muscle stress = 90 N/cm^2 for all the shoulder muscles. Unfortunately, I could not find the source for the value of muscle stress = 90N/cm^2. I tried to search the forum and came across a couple of threads which have dealt with this topic before:
Finally, I could find the literature reference for the muscle stress value, but, it has still left me confused as to what strength percentile does 90N/cm^2 represent. Are we talking about a young adult or an old adult? While, the anthropometric data of the standard human template is “around” 50th percentile European male, what about the strength aspects?
I am sorry for re-posting about topics already discussed. But, I am still not clear about this topic.
I would greatly appreciate if you could provide me with some literature references on this topic as well.