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KMID : 0895820130230020063
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Journal of Oriental Rehabilitation Medicine
2013 Volume.23 No. 2 p.63 ~ p.72
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The Comparative Study on the Frequency of Transcutaneous Electrical Nerve Stimulation for Delayed-Onset Muscle Soreness
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Park Hyun-Kun
Lee Jong-Soo
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Abstract
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Objectives : The aim of this study was to investigate difference of the effects of transcutaneous electrical nerve stimulation(TENS) with different frequencies in participants having delayed onset muscle soreness(DOMS).
Methods :We recruited 36 healthy participants, but 3 of them were dropped out. They were randomly divided into 3groups : 3 Hz TENS(n=11), 100 Hz TENS(n=11) and sham TENS(n=11). DOMS of the both triceps surae muscle induced by repetitive concentric, ecentric exercise. The result measurements were pain perception(visual analogue scale, VAS), mechanical pain threshold(MPT) by pressure algometer, electrical contraction and fatigue by surface electromyography. The measurements were on first visit, before and after treatment except first. This study was prospective, randomized, controlled, single-blinded trial.
Results :In 100 Hz TENS group, VAS was significantly decreased during whole session compared with 3 Hz and control group, and after each treatment, too. In 3 Hz TENS group, VAS was significantly decreased during whole session compared with control group, and after 2nd, 3rd treatment, too. In 100 Hz TENS group, MPT increased the most among 3 groups during whole session and after 1st treatment, but there were no statistical significances.
Conclusions :Both 3 Hz and 100 Hz TENS improved delayed onset muscle soreness, but 100 Hz TENS group is more effective than 3 Hz TENS group.
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KEYWORD
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Transcutaneous Electrical Nerve Stimulation, Frequency, Delayed Onset Muscle Soreness
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