Scaling tendons preserving the consistency of EMG-to-activation relationship

Neuromusculoskeletal (NM) modeling is a powerful tool for understanding how the nervous system controls muscles to generate movements. To scale NM models to different subjects we must include physiological parameters that caracterize individual muscle properties. Most of them cannot be measured directly unless invasive or expensive approaches are adopted. This paper presents a rapid method for estimating muscle tendon slack lengths for muscles crossing the knee.