표면근전도를 이용한 신경근 전기자극 치료변수에 따른 근피로도 분석Analysis of Surface EMG Power Spectrum and Muscle Fatigue Depending on the Variable of Neuromuscular Electrical Stimulation
- Other Titles
- Analysis of Surface EMG Power Spectrum and Muscle Fatigue Depending on the Variable of Neuromuscular Electrical Stimulation
- Authors
- 김기원; 김준선
- Issue Date
- 2014
- Publisher
- 대한물리치료학회
- Keywords
- Muscle fatigue; Neuromuscular electrical stimulation; Electromyogram
- Citation
- 대한물리치료학회지, v.26, no.5, pp.280 - 289
- Indexed
- KCI
- Journal Title
- 대한물리치료학회지
- Volume
- 26
- Number
- 5
- Start Page
- 280
- End Page
- 289
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/99883
- ISSN
- 1229-0475
- Abstract
- Purpose: This study was conducted in order to determine the stimulation variables which should be considered whenneuromuscular electrical stimulation (NMES) is applied for a muscle under the normal innervation to minimize muscle fatigue andincrease force-generating ability.
Methods: A total of 23 healthy men participated in the study and all subjects were randomly assigned to the 1:1 group, 1:3group, 1:5 group, and control group with on-off ratio of NMES. The subjects performed a fatigue task, consisting of 10 times ofisometric contraction sustained by NMES. NMES using Russian current stimulation was applied to muscle fatigue and divided intothree sessions by pulse frequency (10 bps, 30 bps, 90 bps). The EMG was recorded using an MP 100 system from the quadricepsfemoris muscle in four groups.
Results: The differences of delta MdF and delta MF of between on-off ratio groups of 10 bps, 30 bps, and 90 bps pulsefrequencies were very significant (p<0.05). According to the results of post hoc of 10, 90 bps, it was greater in the 1:1 group andthe 1:3 group compared with the 1:5 group, and no fatigue was observed in the control group. In 30 bps, it was greater in the 1:1group compared with 1:3, 1:5, and control group (p<.05).
Conclusion: Among NMES variables to minimize muscle fatigue, the larger on-off ratio by pulse frequency showed the lowermuscle fatigue. Therefore, on-off ratio needs to be great enough, and will be more efficient with the frequency 30 bps ratherthan of 10 bps and 90 bps
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Collections - College of Health Sciences > School of Health and Environmental Science > 1. Journal Articles
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