a Hiroshima University.
Res Sports Med. 2003 Dec 1;11(4):219-34. doi: 10.1080/714041038.
This study was performed to investigate the effect of obstacle height on the angular movements of the trunk and pelvis. Seven healthy subjects (all men) participated in the study (age: 22.0 ± 1.2 years; height: 1.73 ± 0.05 m; mass: 69.1 ± 7.9 kg). Subjects were instructed to perform unobstructed level walking and to step over obstacles corresponding to 5%, 10%, and 15% of each subject's height. The video-based WINanalyze 3D motion measurement system was used to measure the three-dimensional (3D) angular movements of the trunk and pelvis. In the frontal and horizontal planes, peak-to-peak amplitudes of trunk rotation developed as the obstacle height increased. However, peak-to-peak amplitudes of pelvic rotation were not significantly different when stepping over obstacles of different heights. The coefficients, which revealed the degree of synchrony of the shoulder and pelvis, showed a trend of decreasing as the obstacle height increased. These results suggest that stepping over obstacles poses a significant challenge to the coordination of the trunk and pelvis. Pelvic rotation is important in adjusting the crossing stride and clearing an obstacle. In coordination with the pelvic motion, the shoulder plays a role in maintaining dynamic equilibrium when stepping over obstacles.
本研究旨在探讨障碍物高度对躯干和骨盆角运动的影响。七名健康受试者（均为男性）参与了研究（年龄：22.0±1.2 岁；身高：1.73±0.05m；体重：69.1±7.9kg）。受试者被要求进行无障碍水平行走，并跨越相当于其身高 5%、10%和 15%的障碍物。使用基于视频的 WINanalyze 3D 运动测量系统来测量躯干和骨盆的三维（3D）角运动。在额状面和水平面，躯干旋转的峰峰值幅度随着障碍物高度的增加而增加。然而，当跨越不同高度的障碍物时，骨盆旋转的峰峰值幅度没有显著差异。揭示肩部和骨盆同步程度的系数随着障碍物高度的增加呈下降趋势。这些结果表明，跨越障碍物对躯干和骨盆的协调性构成了重大挑战。骨盆旋转对于调整交叉步幅和清除障碍物很重要。在与骨盆运动协调的同时，肩部在跨越障碍物时发挥作用，以维持动态平衡。
