Document Detail

Effects of individualized whole-body vibration on muscle flexibility and mechanical power.
MedLine Citation:
PMID:  20585287     Owner:  NLM     Status:  MEDLINE    
AIM: The first purpose of the present study was to assess acute, residual and chronic effects of whole-body vibration on hamstring and lower back flexibility through the application of an individual frequency of vibration. The second purpose was to determine whether the applied vibration intervention over time influences flexibility and reactive strength differently.
METHODS: Thirty-four young physically active subjects (19 female and 15 male) were randomly assigned to either a Control or a Vibration Group. Lower back and hamstring flexibility was measured using the Stand and Reach Test. The reactive strength was estimated calculating the power in Drop Jump.
RESULTS: During whole-body vibration the relative change in acute flexibility for the Vibration Group (5.30+/-1.67 cm, 284%) reached a level of significance (P=0.038) compared to that of the Control Group (3.14+/-2.11 cm, 84%). Statistically significant differences in residual flexibility between the two groups were found at 6-min after the conclusion of vibration (P=0.034), at which point the Vibration Group showed the maximal relative change to pre-test (6.31+/-3.36 cm, 138%) versus the Control Group (3.06+/-1.87 cm, 20%). Chronic exposure of whole-body vibration did not produce significant changes in flexibility over time (P>0.05), whereas power in the Drop Jump performance of the Vibration Group increased significantly resulting in a benefit of 16% (P=0.019).
CONCLUSION: The current study shows that individualized whole-body vibration without superimposing other exercises is an effective method of acutely increasing lower back and hamstring flexibility. Furthermore, the applied individualized whole-body vibration over time influences the reactive strength rather than flexibility.
R Di Giminiani; R Manno; R Scrimaglio; G Sementilli; J Tihanyi
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Publication Detail:
Type:  Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of sports medicine and physical fitness     Volume:  50     ISSN:  0022-4707     ISO Abbreviation:  J Sports Med Phys Fitness     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-06-29     Completed Date:  2010-12-23     Revised Date:  2012-05-14    
Medline Journal Info:
Nlm Unique ID:  0376337     Medline TA:  J Sports Med Phys Fitness     Country:  Italy    
Other Details:
Languages:  eng     Pagination:  139-51     Citation Subset:  IM    
Faculty of Sport Sciences,University of L'Aquila, L'Aquila, Italy.
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MeSH Terms
Exercise Test
Muscle Strength / physiology*
Muscle, Skeletal / physiology*
Comment In:
J Sports Med Phys Fitness. 2012 Feb;52(1):112   [PMID:  22327095 ]

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