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首页> 外文期刊>Human Movement >The Effects of a Perturbation-Based Balance Training on the Reactive Neuromuscular Control in Community- -Dwelling Older Women: A Randomized Controlled Trial
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The Effects of a Perturbation-Based Balance Training on the Reactive Neuromuscular Control in Community- -Dwelling Older Women: A Randomized Controlled Trial

机译：基于摄动的平衡训练对社区居住老年妇女反应性神经肌肉控制的影响：随机对照试验。

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Purpose. The purpose of this study was to evaluate the effects of short-term perturbation-based balance training and a detraining period on postural control in older adults. Methods. A group of healthy older women were recruited and divided into two groups: an exercise group (EG, n = 21, age = 67.0 ± 2.0 y) that performed balance-based exercises three times a week over a sixweek period and a control group (CG, n = 20, age = 67.9 ± 3.1 y). Center-of-pressure displacement (CoP) and electromyographic data (EMG onset, time-to-peak and amplitude) were assessed during forward and backward perturbations for six leg muscles. All variables were analyzed before the training program began, at its end, and after a six-week period of detraining. A mixed ANOVA model was used to analyze the within- and between-subject results. Results. A decrease in backward CoP displacement, EMG onset and time-to-peak of the ankle muscles, especially the tibialis anterior (TA) and gastrocnemius (MG), was observed. Improvement in muscle EMG amplitude for the ankle muscles (TA, MG and Soleus - SO) at the early phase (0-200 ms) of the perturbation test, with the SO also showing an increase in amplitude at the intermediate phase (201-400 ms). After the detraining period, only the TA muscle maintained an improvement in reaction time. Conclusions. Perturbation-based balance training improved neuromuscular responses such as muscle reaction time and ankle muscle activation and consequently aided the body’s ability to maintain correct center of pressure, although after a period of detraining this gain was not maintained for most of the assessed variables.
机译：目的。这项研究的目的是评估基于短期摄动的平衡训练和训练时间对老年人的姿势控制的影响。方法。招募了一组健康的老年妇女，分为两组：运动组（EG，n = 21，年龄= 67.0±2.0 y），在六周的时间内每周进行三次平衡运动;对照组（ CG，n = 20，年龄= 67.9±3.1 y）。在向前和向后摄动六只腿部肌肉时，评估了压力中心位移（CoP）和肌电图数据（EMG发作，峰值时间和振幅）。在培训计划开始之前，结束之时以及为期六周的训练后，都要分析所有变量。使用混合方差分析模型分析受试者内部和受试者之间的结果。结果。观察到脚踝肌肉，特别是胫前肌（TA）和腓肠肌（MG）的向后CoP位移，EMG发作和达到峰值的时间减少。在扰动测试的早期阶段（0-200 ms）改善了踝部肌肉（TA，MG和Soleus-SO）的肌电信号振幅，SO在中间阶段（201-400）也显示出振幅增加多发性硬化症）。训练结束后，只有TA肌肉的反应时间得以改善。结论。基于摄动的平衡训练可改善神经肌肉反应，例如肌肉反应时间和踝部肌肉的激活，因此有助于人体保持正确的压力中心的能力，尽管经过一段时间的训练后，大多数评估变量均未保持该增益。

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