Mizuno Takamasa
Research Center of Health, Physical Fitness and Sports, Nagoya University, Nagoya-shi 464-8601, Aichi, Japan.
Sports (Basel). 2025 Jun 18;13(6):188. doi: 10.3390/sports13060188.
The purpose of this study was to determine the effect of static stretching (SS) duration on balance. Twenty-two participants performed passive dorsiflexion measurements and balance tests before and after SS. Passive dorsiflexion measurements determined the maximal dorsiflexion angle, passive torque, displacement of the muscle-tendon junction, and electromyography amplitude during passive dorsiflexion. In the balance test, the participant stood on a single leg with their eyes open while the postural sway evaluated in the center of pressure (COP), standing duration, and electromyography amplitude were measured. The ankle and metatarsophalangeal joints underwent SS for 30 s × one set, two sets, and four sets. There were significant increases in COP displacement and COP velocity after two sets of SS but not after one and four sets. Standing duration and electromyography during balance tests were not changed after SS. No gender differences were found in changes in balance. Maximal dorsiflexion angle and passive torque were increased after SS, but the displacement of the muscle-tendon junction and electromyography during passive dorsiflexion were not changed. There was no significant correlation between changes in maximal dorsiflexion angle or passive torque and changes in COP variables after two sets of SS. These results therefore revealed that SS duration affects COP displacement and COP velocity.
本研究的目的是确定静态拉伸（SS）持续时间对平衡能力的影响。22名参与者在进行SS前后分别进行了被动背屈测量和平衡测试。被动背屈测量确定了被动背屈过程中的最大背屈角度、被动扭矩、肌腱连接处的位移以及肌电图幅度。在平衡测试中，参与者单腿站立，双眼睁开，同时测量压力中心（COP）的姿势摆动、站立持续时间和肌电图幅度。踝关节和跖趾关节进行了30秒×一组、两组和四组的SS。两组SS后COP位移和COP速度显著增加，但一组和四组后未增加。SS后平衡测试期间的站立持续时间和肌电图没有变化。在平衡变化方面未发现性别差异。SS后最大背屈角度和被动扭矩增加，但被动背屈期间肌腱连接处的位移和肌电图未改变。两组SS后最大背屈角度或被动扭矩的变化与COP变量的变化之间没有显著相关性。因此，这些结果表明SS持续时间会影响COP位移和COP速度。
