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Category

Implement sports

Document Type

Paper

Abstract

The purposes of this study were to investigate the effect of foot rotation angle on the rotational range of motion (ROM) of trunk and pelvis. Eleven healthy males participated in this study who performed a maximum rotation of the trunk in a standing posture on the conditions of five different foot rotation angles based on “the central angle” that was defined as the average of the maximum internal- and external-rotation of hip joint in a static standing. Kinematic and kinetic analysis was performed with an optical motion capture system and two force plates. The ROM of the pelvis segment decreased significantly on the conditions of -30deg or +30deg compared to the ROM on the condition of the central angle. The load on the foot on the rotating side increased and the free moment decreased as the foot rotation angle increased externally.

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