Song Qipeng, Tian Xuewen, Wong Del, Zhang Cui, Sun Wei, Cheng Peng, Mao Dewei
a Shanghai University of sport , Shanghai , China.
b Shandong Institute of Sport Science , Jinan , China.
Res Sports Med. 2017 Apr-Jun;25(2):197-208. doi: 10.1080/15438627.2017.1282363. Epub 2017 Feb 16.
The elderly are prone to stair descent falls under low illumination. Tai Chi, a traditional Chinese conditioning exercise, has been proved to improve body stability by altering body condition, gait, and proprioception. This study investigates whether Tai Chi exercise could improve body stability during stair descent under high and low illumination. Three groups of elderly women who practice Tai Chi, brisk walking, and no exercise were included. They descended from a simulated staircase. Tai Chi participants decreased horizontal velocity, centre of mass (COM) sway, and increased foot clearance compared with other participants, these movements could increase body stability; Compared with under high illumination, Tai Chi participants decreased horizontal velocity, loading rate, braking impulse, and increased inclination angle, COM sway, centre of pressure displacement under low illumination. Tai Chi participants were more sensitive to the difference in illumination, and took corresponding strategies to stabilize their bodies during stair descent.
老年人在低光照条件下容易在走下楼梯时摔倒。太极拳作为一种中国传统的健身运动，已被证明可以通过改变身体状况、步态和本体感觉来提高身体稳定性。本研究调查了太极拳练习是否能在高光照和低光照条件下走下楼梯时提高身体稳定性。研究纳入了三组老年女性，分别是练习太极拳的、快走的和不运动的。她们从一个模拟楼梯上走下来。与其他参与者相比，练习太极拳的参与者降低了水平速度、质心（COM）摆动，并增加了脚离地高度，这些动作可以提高身体稳定性；与高光照条件下相比，练习太极拳的参与者在低光照条件下降低了水平速度、负荷率、制动冲量，并增加了倾斜角度、COM摆动、压力中心位移。练习太极拳的参与者对光照差异更敏感，并在走下楼梯时采取相应策略来稳定身体。
