SURFACE ELECTROMYOGRAPHIC ASSESSMENT OF THE EFFECT OF STATIC STRETCHING OF THE GASTROCNEMIUS ON VERTICAL JUMP PERFORMANCE
SURFACE ELECTROMYOGRAPHIC ASSESSMENT OF THE EFFECT OF STATIC STRETCHING OF THE GASTROCNEMIUS ON VERTICAL JUMP PERFORMANCE
复制标题
腓肠肌静态拉伸对垂直跳跃性能影响的表面肌电图评估
DOI：
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发表时间：
2005
影响因子：
3.2
通讯作者：
Wesley Mcwhorter
中科院分区：
文献类型：
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作者：
H. Wallmann;J. Mercer;Wesley Mcwhorter
本研究的目的是利用腓肠肌肌电图活动 (EMG) 记录垂直跳跃表演期间的肌肉活动，研究腓肠肌静态拉伸对最大垂直跳跃表演的影响。 14名年龄在18-34岁、熟悉垂直跳跃任务、过去一年内无下肢损伤或任何骨关节疾病的健康成年人（8男6女）作为本研究的参与者。经过短暂的热身后，参与者进行了以下顺序：(a) 3 次基线最大垂直跳跃试验，(b) 15 分钟安静坐姿和 3 次 30 秒的双侧腓肠肌静态拉伸，以及 (c) 3 次最大垂直跳跃试验。使用奇石乐测力台收集跳跃高度数据，同时使用 Noraxon 遥测肌电图装置记录跳跃和伸展试验期间的肌肉活动。垂直跳跃高度数据以及 EMG 值是 3 次试验的平均值，并使用拉伸前和拉伸后的配对 t 检验进行分析 (a5 0.05)。当拉伸后的高度与拉伸前的高度相比时，垂直跳跃高度降低了 5.6%（t 524.930，p < 0.005）。与拉伸前跳跃期间的肌电图相比，腓肠肌肌电图高出 17.9%（t = 2.805，p < 0.02）。这项研究的结果表明，尽管腓肠肌活动增加，但腓肠肌的静态拉伸对最大跳跃性能产生负面影响。实际重要性涉及教练和运动员，他们可能需要考虑仅在跳跃项目之前对腓肠肌进行静态拉伸的潜在不利影响，因为跳跃高度可能会受到负面影响。未来的研究需要确定影响垂直跳跃表现的机制。
The purpose of this study was to investigate the effects of static stretching of the gastrocnemius muscle on maximal vertical jump performance using electromyographic activity (EMG) of the gastrocnemius musculature to record muscle activation during vertical jump performance. Fourteen healthy adults (8 men and 6 women) aged 18–34 years, who were familiar with the vertical jumping task and had no lower extremity injuries or any bone or joint disorders within the past year, served as participants for this study. After a brief warm-up, participants performed the following sequence: (a) three baseline maximal vertical jump trials, (b) 15 minutes of quiet sitting and three 30-second bilateral static stretches of the gastrocnemius muscles, and (c) 3 maximal vertical jump trials. Jump height data were collected using the Kistler force plate, while muscle activity was recorded during the jumping and stretching trials using a Noraxon telemetry EMG unit. Vertical jump height data as well as EMG values were averaged for the 3 trials and analyzed using paired t-tests for pre- and poststretching (a5 0.05). Vertical jump height was 5.6% lower when poststretch heights were compared with prestretch heights (t 524.930, p < 0.005). Gastrocnemius EMG was 17.9% greater when the EMG during poststretch jumps was compared with prestretch jumps (t = 2.805, p < 0.02). The results from this study imply that, despite increased gastrocnemius muscle activity, static stretching of the gastrocnemius muscles had a negative effect on maximal jumping performance. The practical importance concerns coaches and athletes, who may want to consider the potential adverse effects of performing static stretching of the gastrocnemius muscles only before a jumping event, as jump height may be negatively affected. Future research is required to identify the mechanisms that affect vertical jump performance.
影响因子：
2.4
作者：
PANDY, MG;ZAJAC, FE
通讯作者：
ZAJAC, FE