筋骨格シミュレーションによるジャンプ時の筋活動推定の妥当性検証

抄録

The purpose of this study is to verify the validity of estimation of lower limb muscle activity during jumping by a musculoskeletal simulation model. The data of the measurement experiment was used as the input data of the simulation, and the lower limb muscle activity was calculated by the simulation. Three types of jumps (Squat Jump, Drop Jump and Countermovement Jump) were performed, and the EMG data of the rectus femoris, long head of biceps femoris, lateral gastrocnemius, and tibialis anterior, selected by correlation analysis, were measured, and compared with the simulation results.

Validation results showed that the Gait2392 simulation model underestimated the muscle activity, but a similar curve to the measurement experiment. The model is considered to have sufficient validity. Therefore, the reliability of estimating muscle activity during jumping using a simulation model was confirmed. However, the first half of the landing stage of the jump has a slight difference in the simulation results, and it is thought that it is necessary to analyze the landing stage in detail.