Typical nMTL in gait - sources of data for comparison

[Emma Pratt]

Hi,

Apologies for the basic question, I have output normalised Muscle-Tendon Lengths during gait for both typical and clinical paediatric cohorts (CP Diplegia and Hemiplegia) using a modified generic MSK model (RajagopalLaiUhlrich) adjusted to 3DoF at the knee. I would like to do some simple face validation of my outputs, visually comparing the nMTL outputs for 10 muscles to published data (from any model), but am struggling to find typical nMTL data across the gait cycle. I am using Kainz 2021 paper for some of the muscles, is anyone aware of any other publications/books? I'm looking at Adductor Brevis, Adductor Magnus (Distal component), Gracilis, Psoas, Rectus, Semimembranosus, Medial Gastroc, Soleus, Tib Ant and Tib Post.

Thanks in advance
Emma

[Jon Stingel]

Hi Emma,

This could depend on the speeds that you are looking at in your study. Perhaps you are looking for something along the lines of Edith Arnold's 2013 paper that includes plots of normalized fiber lengths across different gait speeds.
https://journals.biologists.com/jeb/art ... ies-affect

Alternatively, you could take any of the validated models that you have come across, and see if you can pose the model through a gait cycle and collect the outputs that you are searching for as a way to compare between motions or models.

Hope this helps!
Jon

[Emma Pratt]

Thanks, that paper looks great!

BW

Emma