Department of Physical Education, National Taichung University of Education , Taichung, Taiwan.
Department of Physical Education, National Taiwan Normal University , Taipei, Taiwan.
Res Sports Med. 2020 Oct-Dec;28(4):563-571. doi: 10.1080/15438627.2020.1727478. Epub 2020 Feb 13.
This study sought to compare the biomechanical parameters of the lower extremities during a countermovement jump in elderly people who are engaged in frequent practice of tai chi chuan (TCG) and in the general population of healthy elderly people (HG). Each group included 12 participants. Ten Vicon Motion System infrared cameras and two Kistler force plates were employed for measurement. The jump height, duration, centre of mass (COM) displacement, joint ROM, and upward velocity were analysed in this study. Motion analysis and force platform data were combined to calculate joint moments and powers during the takeoff phase. The data were analysed using independent sample t-tests. The results showed that the tai chi chuan practitioner group (0.13 m) achieved 44% higher jump heights ( < 0.05). The COM displacement during squatting was lower in the TCG (0.25 m) than in the HG (0.19 m) ( < 0.05). The knee and ankle ROMs of the TCG were higher than those of the HG ( < 0.05). Peak knee moment 23% and peak knee power 32% higher in TCG compared to the HG ( < 0.05), suggesting that frequent practice of tai chi chuan may slow the rate of knee degeneration.
本研究旨在比较经常练习太极拳（TCG）的老年人和健康老年人（HG）在进行反跳动作时下肢的生物力学参数。每组包括 12 名参与者。使用了 10 个 Vicon 运动系统红外摄像机和 2 个 Kistler 力板进行测量。本研究分析了跳跃高度、持续时间、质心（COM）位移、关节 ROM 和向上速度。运动分析和力台数据结合起来计算起飞阶段的关节力矩和功率。数据使用独立样本 t 检验进行分析。结果表明，太极拳练习者组（0.13 m）的跳跃高度高 44%（<0.05）。TCG（0.25 m）蹲伏时的 COM 位移低于 HG（0.19 m）（<0.05）。TCG 的膝关节和踝关节 ROM 高于 HG（<0.05）。与 HG 相比，TCG 的峰值膝关节力矩高 23%，峰值膝关节功率高 32%（<0.05），这表明经常练习太极拳可能会减缓膝关节退化的速度。
