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首页> 外文期刊>Gait & posture >Training induced adaptations in characteristics of postural reflexes in elderly men.
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Training induced adaptations in characteristics of postural reflexes in elderly men.

机译：训练诱发了老年人的姿势反射特征的适应。

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摘要

The aging neuromuscular system is affected by structural and functional changes which lead to a general slowing down of neuromuscular performance and an increased risk of falling. The impact of heavy resistance (HR) training in the elderly on maximum voluntary contraction (MVC) and rate of force development (RFD) has been investigated in the past. However, the influence of sensorimotor (SENSO) training and HR training on the ability to compensate for gait perturbations has not yet been investigated in the elderly. Therefore, the purpose of the study was to examine the impact of HR and SENSO training in elderly men on unexpected treadmill perturbations. Functional reflex activity was recorded by means of surface EMG in 40 male subjects (>60 years) before and after 13 weeks of HR and SENSO training and in another 20 male subjects (>60 years), which served as a CONTROL-group. SENSO training resulted in a decrease in onset latency, an enhanced reflex activity in the prime mover as well as a decrease in maximal angular velocity of the ankle joint complex during the perturbation impulses. No significant changes were observed in the HR- and in the CONTROL-group. The results clearly indicate that SENSO training has an impact on spinal motor control mechanisms in the elderly. Training induced improvements in perception and procession of afferent information could be a possible reason for the increase in reflex contraction. Due to these adaptive processes, SENSO training could be a well-suited method for fall preventive programs in elderly people.
机译：老化的神经肌肉系统受结构和功能变化的影响，这些变化会导致神经肌肉性能普遍减慢和跌倒的风险增加。过去已经研究了老年人的重阻力（HR）训练对最大自愿收缩（MVC）和力量发展率（RFD）的影响。但是，尚未对老年人进行感觉运动（SENSO）训练和HR训练对补偿步态微扰的能力的影响。因此，该研究的目的是检验HR和SENSO培训对老年男性跑步机意外扰动的影响。在HR和SENSO训练13周之前和之后，通过表面肌电图记录了功能反射活动的40位男性受试者（> 60岁）和作为对照组的另外20位男性受试者（> 60岁）。 SENSO训练可减少起搏潜伏期，原动机中增强的反射活动以及在扰动脉冲过程中踝关节复合体的最大角速度降低。 HR组和对照组均未见明显变化。结果清楚地表明，SENSO训练对老年人的脊柱运动控制机制有影响。训练引起传入信息感知和处理的改善可能是反射收缩增加的可能原因。由于这些适应性过程，SENSO培训可能是适合老年人跌倒预防方案的方法。

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