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Blood flow-restricted training does not improve jump performance in untrained young men.
MedLine Citation:
PMID:  22173028     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
The purpose of this study was to investigate the effect of blood flow-restricted training (BFRT) on jump performance in relation to changes in muscle strength. Seventeen untrained young men were assigned into either BFRT or normal training (NORT) groups and performed low-intensity [30-40% of one-repetition maximum (1RM)] resistance exercise (horizontal squat, 3-4 sets × 15-30 repetitions) twice a week for 10 weeks. The BFRT performed the exercise with their proximal thighs compressed by air-pressure cuffs for the purpose of blood flow restriction. Squat 1RM, muscle cross-sectional area (CSA) of quadriceps femoris, and countermovement jump (CMJ) height were measured before and after the 10-wk training period. Squat 1RM increased greater in BFRT than in NORT (19.3% vs. 9.7%, P < 0.01). Although the CSA increase was independent of groups, it tended to be larger in BFRT than in NORT (8.3% vs. 2.9%, P = 0.094). On the other hand, CMJ height did not change after the training (P = 0.51). In conclusion, the present study showed that BFRT induced muscle hypertrophy and strength increase, whereas it did not increase CMJ height in previously untrained young men. It is suggested that BFRT is ineffective in improving jump performance.
Authors:
Haruhiko Madarame; E Ochi; Y Tomioka; K Nakazato; N Ishii
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Acta physiologica Hungarica     Volume:  98     ISSN:  0231-424X     ISO Abbreviation:  Acta Physiol Hung     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8309201     Medline TA:  Acta Physiol Hung     Country:  Hungary    
Other Details:
Languages:  eng     Pagination:  465-71     Citation Subset:  IM    
Affiliation:
The University of Tokyo Department of Life Sciences (Sports Sciences), Graduate School of Arts and Sciences Tokyo Japan The University of Tokyo Department of Life Sciences (Sports Sciences), Graduate School of Arts and Sciences 3-8-1 Komaba, Meguro-ku Tokyo 153-8902 Japan.
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