Exercise with TENS does not augment gains in balance and strength for dancers

被引:3
作者
Davis, Leah A. [1 ]
Carzoli, Joseph P. [1 ]
Feka, Kaltrina [1 ,3 ]
Nelson, Christina [2 ]
Enoka, Roger M. [1 ]
机构
[1] Univ Colorado, Dept Integrat Physiol, Campus Box 354, Boulder, CO 80309 USA
[2] Univ Colorado, Dept Theater & Dance, Boulder, CO 80309 USA
[3] Univ Palermo, Hlth Promot & Cognit Sci, Dept Psychol Educ Sci & Human Movement, Palermo, Italy
关键词
Electrical stimulation; Y-balance test; Single-leg balance; Bodyweight exercises;
D O I
10.1016/j.jelekin.2020.102507
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
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.
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页数:8
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