Influence of Lower Limb Muscle Fatigue on Balance Function
Influence of Lower Limb Muscle Fatigue on Balance Function
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DOI：
10.1589/jpts.25.331
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发表时间：
2013-03-01
影响因子：
--
通讯作者：
Morita, Sadao
中科院分区：
文献类型：
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作者：
Inoue, Kazuhisa;Uematsu, Mitsutoshi;Morita, Sadao
[目的]平衡训练降低了老年人跌倒的风险，但还不知道应该加强哪些特定肌肉。这项研究的目的是确定下肢各个肌肉群的疲劳与平衡之间的关系。[对象和方法]我们测试了21名健康青年的42条小腿，这些人没有骨折或骨关节疾病的病史。对屈伸肌群进行自主等长收缩疲劳，分析其对平衡功能的影响。[结果]肌肉疲劳后，髋伸肌群和踝底屈肌群的运动轨迹总长度发生变化，单位面积的髋屈伸肌、膝关节屈肌和踝关节背屈肌群的运动轨迹长度发生变化。只有髋关节伸肌显示出总轨迹长度和单位面积轨迹长度的变化。[结论]本研究结果提示，髋伸肌群的肌肉疲劳与健康青壮年的平衡功能下降有关。在平衡训练中将更多的重点放在髋伸肌群上，很可能会增加此类计划的有效性。
[Purpose] Balance training lowers the risk of falling in the elderly, but it is not known which specific muscles should be strengthened. The purpose of this study was to determine associations between fatigue of individual muscle groups in the lower limbs and balance. [Subjects and Methods] We tested 42 lower limbs of 21 healthy young adults with no history of fractures or of bone and joint disorders. Groups of flexor and extensor muscles were fatigued individually by voluntary isometric contraction, and the effects on balance function were analyzed. [Results] We found changes in total trajectory length of hip extensors and ankle plantar flexors after muscles were fatigued and in trajectory length per unit area of hip flexors and extensors, knee flexors and ankle dorsiflexors. Only hip extensors showed changes in both total trajectory length and trajectory length per unit area. [Conclusion] The results of this study suggest that muscle fatigue of the hip extensors is associated with a decline in balance function of the lower limbs of healthy young adults. It is likely that incorporating a greater focus on hip extensors in balance training would increase the effectiveness of such programs.