title: Effects of low-frequency electrical stimulation on cumulative fatigue and muscle tone of the erector spinae.
abstract: [Purpose] The aim of this study was to determine the effect of low-frequency electrical stimulation on fatigue recovery of the erector spinae with cumulative fatigue induced by repeated lifting and lowering work. [Subjects] Thirty-two healthy men volunteered to participate in this study and they were randomly divided into three groups: a MC group of 12 persons who underwent microcurrent, a TENS group of 10 persons who underwent Transcutaneous electrical nerve stimulation, and a control group of 10 persons who only rested. [Methods] Cumulative fatigue was induced and then, EMG, muscle tone, CK and LDH serum levels of the erector spinae were measured. Each group then underwent the assigned intervention and was re-measured. To analyze the differences in fatigue between before and after the intervention, the paired t-test was conducted, while groups were compared using analysis of covariance with a control group. [Results] The MC groups showed a significant reduction in muscle fatigue and decreased muscle tone when compared to the control group. However, no significant differences were found between the TENS and control groups. [Conclusion] These results suggest that microcurrent stimulation was effective for recovery from cumulative muscle fatigue while TENS had no effect.
authors: Department of Physical Therapy, Dongsin University, Republic of Korea.
authors: Da-Haeng
authors: DH
authors: Kang
authors: Department of Physical Therapy, Hanlyo University, Republic of Korea.
authors: Jae-Keun
authors: JK
authors: Jeon
authors: Department of Physical Therapy, Cheongju University, Republic of Korea.
authors: Joon-Hee
authors: JH
authors: Lee
keywords: Fatigue; Microcurrent; Transcutaneous electrical nerve stimulation
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