Document Detail

Evaluation of exercise-induced muscle damage by surface electromyography.
MedLine Citation:
PMID:  21075645     Owner:  NLM     Status:  Publisher    
OBJECTIVE: To investigate the feasibility of a non-invasive and instant method to evaluate the degree of exercise-induced muscle damage. METHODS: Thirteen male college athletes (23.4±1.0year, 180.03±3.51cm, 75.93±6.70kg) took part in the trial. Measures included serum creatine kinase (CK) after eccentric and endurance exercise, and surface electromyography (sEMG) during knee extension and flexion on a Biodex unit. Relation analysis was employed between sEMG and serum CK after the eccentric and endurance exercise. RESULTS: There were positive correlations between serum CK at 24 and 48h after eccentric exercise and the AREA of sEMG for the slow isokinetic contraction before eccentric exercise (r=0.69, P<0.01 and 0.64, P<0.05, respectively). The zero crossing rate (ZCR) immediately after exercise was negatively correlated with serum CK at 48h after exercise for the slow and fast tests (r=-0.63 and -0.59, P<0.05, respectively). Mean power frequency (MPF) and ZCR of sEMG at 6h post endurance exercise were positively correlated with serum CK at 24h (r=0.73 and 0.69, P<0.05, respectively) for the fast isokinetic test. CONCLUSIONS: Exercise-induced muscle damage as evaluated by serum CK was associated with the AREA of sEMG after eccentric exercise. The ZCR of sEMG was a good predictor of muscle damage after endurance exercise.
Yue Zhou; Yang Li; Ruiyuan Wang
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2010-11-12
Journal Detail:
Title:  Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology     Volume:  -     ISSN:  1873-5711     ISO Abbreviation:  J Electromyogr Kinesiol     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-11-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9109125     Medline TA:  J Electromyogr Kinesiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2010 Elsevier Ltd. All rights reserved.
Beijing Sport University, Graduate School, Beijing 100084, China.
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