Analysis of center of gravity velocity using estimated lower limb muscle forces during squatting

This study proposes a squatting model that describes the relation between center of gravity velocity and lower limb muscle forces contribute to hip knee flexion-extension ankle dorsi-plantar flexion during squatting. Squatting exercises are experimentally monitored using 3D motion analysis system two force plates. Participants perform exercise with their feet shoulder-width apart without weight such as barbell. Simulations musculoskeletal calculate based on measured marker positions floor reaction forces. The parameters determined by Kalman filter obtained velocity, estimated simulations. results quantitatively demonstrate contribution each To verify accuracy, root mean squared errors calculated is system. indicate may have differed participants trials. proposed method expected be utilized evaluate different among individual.