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首页> 外文期刊>The Journal of Musculoskeletal and Neuronal Interactions >Changes in motor unit activity and respiratory oxygen uptake during 6 weeks of progressive whole-body vibration combined with progressive, high intensity resistance training
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Changes in motor unit activity and respiratory oxygen uptake during 6 weeks of progressive whole-body vibration combined with progressive, high intensity resistance training

机译：在进行性全身振动结合进行性高强度阻力训练的6周内，运动单位活动和呼吸氧吸收的变化

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Objectives: We hypothesized that the additional activation of motor units (MU) and the elevation of metabolic energyturnover resulting from whole-body vibration (WBV) superimposed to high intensity resistance training on a smith machinepersist after 6 weeks of training with progressively increasing loads and vibration frequencies. Methods: Two groupsof healthy male subjects performed either 6 weeks of Resistive Vibration Exercise (RVE, squats and heel raises withWBV, n=13) or Resistive Exercise (RE using the same protocol, n=13). During the first (pre) and the last training session(post), we determined the oxygen uptake changes normalized to total training weight (ΔV’O2/ttw) and the normalized MUactivity from rectus femoris (squats) and gastrocnemius lateralis (heel raise) muscles filtered for vibration frequencies andharmonics (EMG/ttw). Results: At pre measurement, RVE induced higher EMG/ttw (squats) than RE alone (group effect,P=0.006). At post measurement, EMG/ttw was reduced (time effects between P=0.087 and P0.001 for both groupsand exercises). At pre and post measurement, ΔV’O2/ttw was higher during RVE than during RE (group effects betweenP=0.005 and P=0.099 for both exercises). Conclusions: RVE permanently elevated metabolic energy turnover, althoughthe initially observed additional MU activity by RVE could not be preserved in the working musculature.
机译：目的：我们假设，经过6周的训练，随着负荷和振动的逐渐增加，史密斯机枪手的高强度阻力训练叠加了全身振动（WBV）引起的运动单位（MU）的额外激活和代谢能量转换的升高频率。方法：两组健康的男性受试者进行了6周的抵抗性振动锻炼（RVE，WBV下蹲和脚跟抬高，n = 13）或抵抗性锻炼（RE使用相同的方案，n = 13）。在第一个（训练前）和最后一个训练（训练后）期间，我们确定了以总训练重量（ΔV'O2/ ttw）归一化的氧气吸收变化以及股直肌（蹲）和腓肠肌外侧肌（足跟升高）的标准化MUactivity。过滤肌肉的振动频率和谐波（EMG / ttw）。结果：在预测量时，RVE引起的EMG / ttw（蹲）高于单独的RE（组效应，P = 0.006）。在测量后，EMG / ttw降低（两组和运动的时间效应在P = 0.087和P <0.001之间）。在测量前和测量后，RVE期间的ΔV’O2 / ttw高于RE期间（两种锻炼的小组效应均在P = 0.005和P = 0.099之间）。结论：RVE永久提高了代谢能量的转化率，尽管最初观察到RVE不能提供额外的MU活性，但仍保留在工作的肌肉组织中。

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