Document Detail


Effects of Combining Whole-body Vibration with Exercise on the Consequences of Detraining on Muscle Performance in Untrained Adults.
MedLine Citation:
PMID:  22739330     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
ABSTRACT: The present study investigated whether whole-body vibration (WBV) coupled with low-velocity exercise (EX) for 13 weeks retains muscle performance gains after 5 weeks of subsequent detraining compared with the identical EX program without WBV. Thirty-two untrained healthy adults (22-49 years of age) were randomly assigned to groups that performed EX with or without WBV (EX-WBV and EX, respectively; n=16 per group). The following outcome variables were evaluated: countermovement jump height; maximal isometric, concentric, and eccentric knee extension strengths; local muscular endurance; and lumbar extension torque before, during, and after the 13-week training period, and after 5 weeks of detraining. Compared to the EX group, significantly higher increases in countermovement jump height and isometric and concentric knee extension strengths were detected in the EX-WBV group after the 13-week training period. However, detraining caused significant declines in these three muscle performance tests only in the EX-WBV group (-4.8% , -10.2%, and -17.2%, respectively), resulting in no significant differences between the test and control groups after the detraining period. After detraining, all examined variables showed significantly better performance compared to pre-training (P<0.05) and did not significantly differ from mid-training (seven weeks) in both groups (P>0.05). These results suggest that muscle strength in the lower extremities, particularly isometric and concentric contractions, and muscle power might be more susceptible to short-term detraining effects when exercise is combined with WBV. Thus, it is necessary to perform regular exercise to maximize the benefits of WBV on muscle strength and power during the early stages of training in previously untrained individuals.
Authors:
Yusuke Osawa; Yuko Oguma
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-6-26
Journal Detail:
Title:  Journal of strength and conditioning research / National Strength & Conditioning Association     Volume:  -     ISSN:  1533-4287     ISO Abbreviation:  -     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-6-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9415084     Medline TA:  J Strength Cond Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
1Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1, Komaba, Meguro-ku, Tokyo 153-8902, Japan 2Sports Medicine Research Center, Keio University, Address: 4-1-1, Hiyoshi, Kohoku-ward, Yokohama City, Kanagawa 223-8521, Japan 3Graduate School of Health Management, Keio University, 4411, Endo, Fujisawa City, Kanagawa 252-8530, Japan.
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