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首页> 外文会议>55th International Astronautical Congress 2004 vol.3 >NEUROMUSCULAR AND HORMONAL EFFECTS OF A SINGLE SESSION OF WHOLE BODY VIBRATION
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NEUROMUSCULAR AND HORMONAL EFFECTS OF A SINGLE SESSION OF WHOLE BODY VIBRATION

机译：一次整体振动对神经和激素的影响

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The purpose of this study was to compare the neuromuscular and hormonal responses following a single session of isometric half-squat exercise with and without the superimposition of whole body vibrations (WBV). Seven healthy males performed ten sets of one minute, with one minute rest between sets, of isometric exercise in half-squat position. This was conducted on two separate occasions, either with WBV (30 Hz; 3.5 g) or no vibration (Control). Maximal isometric unilateral knee extensions with doublet superimposed via percutaneous electrical stimulation were performed before and immediately following WBV and Control treatments. Significant decreases in maximal voluntary contraction were observed following both WBV and Control. Rate of torque development in the first 200 ms (RTD_(200ms)), salivary testosterone (T) and cortisol (C) concentrations, and voluntary activation were unaffected. However, RTD_(200ms) and T concentration tended to be lower following WBV only. The results of this study suggest that this acute WBV protocol does not greatly affect the neuroendocrine system, but does cause a low level of fatigue, most likely attributed to peripheral rather than central mechanisms.
机译：本研究的目的是比较单次等距半深蹲运动与不加全身振动（WBV）叠加后的神经肌肉和激素反应。七名健康的男性在半蹲姿势下进行了十组一分钟的等距锻炼，每组之间休息了一分钟。这是在WBV（30 Hz; 3.5 g）或无振动（控制）的两种情况下进行的。在WBV和对照治疗之前和之后立即进行最大等距单侧膝关节伸展，并通过经皮电刺激叠加两次。 WBV和对照后，最大自愿收缩明显减少。前200毫秒（RTD_（200ms））的扭矩发展速度，唾液睾丸激素（T）和皮质醇（C）浓度以及自愿激活均不受影响。但是，仅在WBV之后，RTD_（200ms）和T浓度趋于降低。这项研究的结果表明，这种急性WBV方案不会严重影响神经内分泌系统，但会引起低水平的疲劳，这很可能归因于周围而非中央机制。

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