Electrical stimulation modulates sensory feedback and improves motor performance, at least for individuals with compromised sensorimotor function. The purpose of this study was to determine the effectiveness of a 4-wk intervention with transcutaneous electrical nerve stimulation (TENS) at improving strength and balance in dancers. Nineteen dancers completed a timed, single-leg balance test, the Y-balance test, and contractions with the hip flexor and knee extensor muscles to assess maximal strength and force steadiness. They completed 4-wks of moderate-intensity bodyweight exercises (3x/wk) and were pseudo-randomized to either a Treatment or Sham group in a single-blind design. The Treatment group received constant TENS over the hamstring muscles during the exercises, whereas the Sham group was exposed to a brief TENS current. The data were pooled due to few significant between-group differences from before to after the intervention. Most outcome measures significantly improved: hip extensor muscles were stronger (P ≤ 0.01), time stood on a single-leg with eyes closed increased (P = 0.02), and the distance reached during the Y-balance test increased (P ≤ 0.001). The improvement in scores on the Y-balance test exceeded the minimal clinically significant change. Twelve sessions of moderate-intensity bodyweight exercises improved muscle strength and balance in experienced dancers. The addition of TENS, however, did not augment the gains in function.

至少对于那些感觉运动功能受损的个体，电刺激可调节感觉反馈并改善运动表现。这项研究的目的是确定经皮电神经刺激（TENS）进行的4周干预对提高舞者的力量和平衡的有效性。19名舞者完成了定时的单腿平衡测试，Y平衡测试以及髋屈肌和膝盖伸肌的收缩，以评估最大力量和力量的稳定性。他们完成了4周的中等强度体重锻炼（3x / wk），并以单盲设计被伪随机分为“治疗”或“假”组。在锻炼期间，治疗组在绳肌上接受了恒定的TENS，而Sham组则暴露于短暂的TENS电流下。由于干预前后两组之间的显着差异，因此汇总了数据。大多数结果指标均得到明显改善：髋部伸肌更强壮（P  ≤0.01），时间站在单腿闭眼增加（P  = 0.02），和Y-平衡测试期间达到的距离增加（P  ≤0.01）。Y平衡测试的分数改善超过了临床上最小的显着变化。在有经验的舞者中进行十二次中等强度的体重锻炼可改善肌肉力量和平衡。但是，TENS的添加并没有增加功能上的收益。