2019 Volume 10 Issue 1 Pages 1_51-1_59
The purpose of this study was to clarify joint motion during rising from a supine position with trunk rotation. Ten healthy young men (aged 21-26 years) participated in this study. The subjects rose from a supine position with trunk rotation to a long sitting position. Joint motions were recorded with a three-dimensional motion analysis system. The head flexed and rotated, the trunk flexed and rotated, and the shoulder on the contralateral side of trunk rotation flexed, adducted, and internally rotated in the early phase during rising. Except for trunk flexion, these reached a peak level at about 25-40% after the initiation of rising motion. The results of this study may support prior literature descriptions of joint motion during rising from a supine position with trunk rotation. Furthermore, the findings of this study may serve as a rough standard for the range of motion required to rise from a supine position with trunk rotation to a long sitting position.
