Trauma and Orthopaedic Surgery, North West (Mersey) Deanery, Liverpool, UK.
School of Health Sciences, Liverpool Hope University, Liverpool, UK.
Eur J Appl Physiol. 2019 Aug;119(8):1789-1798. doi: 10.1007/s00421-019-04168-9. Epub 2019 May 31.
There is an interest within elite sport in understanding the impact of a vibrating platform as an adjunct to exercise in the training and rehabilitation of throwing athletes. However, there has been no comprehensive evaluation of its impact on the rotator cuff muscles or its effect on the timing of shoulder muscle recruitment more globally.
Twenty healthy participants were recruited with EMG recorded from 15 shoulder girdle muscles. Isometric shoulder flexion at 25% maximal voluntary contraction was performed in three testing scenarios [no vibration; whole body vibration (WBV); and arm vibration (AV)]. A press up and triceps dips with and without vibration were also performed. Muscular recruitment was assessed pre- and post-vibration exposure as participants initiated forward flexion.
Activation of the anterior deltoid (p = 0.002), serratus anterior (p = 0.004), and rotator cuff muscles (p = 0.004-0.022) occurred significantly earlier following exposure to vibration. Significantly greater activation was seen in the anterior, middle and posterior deltoid, upper, middle and lower trapezius, serratus anterior, teres major, latissimus dorsi, supraspinatus, and infraspinatus when the isometric contraction was performed with either WBV and/or AV (p = < 0.001-0.040). Similarly, increased activation was also demonstrated during the press up and triceps dips when performed with vibration.
The use of vibration as an adjunct to exercise provokes a near global increase in shoulder muscle activation level. Furthermore, exposure to vibration alters muscular recruitment improving readiness for movement. This has potential implications within elite sport for both training and game preparation; however, further longitudinal work is required.
在精英运动中，人们对将振动平台作为投掷运动员训练和康复的辅助手段的影响很感兴趣。然而，目前还没有对其对肩袖肌肉的影响或更全面地对肩部肌肉募集时间的影响进行综合评估。
招募了 20 名健康参与者，使用肌电图记录了 15 个肩部肌肉的活动。在三种测试情况下（无振动、全身振动（WBV）和手臂振动（AV））进行 25%最大自主收缩等长肩部前屈。还进行了带振动和不带振动的俯卧撑和三头肌下降运动。参与者在开始前屈时，评估振动暴露前后的肌肉募集情况。
振动暴露后，三角肌前部（p=0.002）、前锯肌（p=0.004）和肩袖肌肉（p=0.004-0.022）的激活明显更早。在进行等长收缩时，无论是 WBV 还是 AV，三角肌前部、中部和后部、上、中、下斜方肌、前锯肌、大圆肌、背阔肌、冈上肌和冈下肌的激活明显更大（p= < 0.001-0.040）。同样，在进行俯卧撑和三头肌下降运动时，使用振动也可以增加肌肉的激活。
将振动作为运动的辅助手段可以引起肩部肌肉激活水平的近乎全面增加。此外，暴露于振动会改变肌肉募集，从而提高运动准备就绪程度。这对精英运动的训练和比赛准备都有潜在的影响；然而，还需要进一步的纵向研究。
