Fig. 2From: Effect of hip joint angle at seat-off on hip joint contact force during sit-to-stand movement: a computer simulation studySimulation flowchart. In an STS movement, static optimization is conducted for each frame. The muscle forces during an STS movement are estimated 20 times by using variable parameters. Therefore, estimations of muscle forces were conducted 14,360 (= 20 × 718) times in this computer simulation studyBack to article page