Document Detail


Increases in thigh muscle volume and strength by walk training with leg blood flow reduction in older participants.
MedLine Citation:
PMID:  20974731     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
We examined the effects of walk training combined with leg blood flow reduction (BFR) on muscle hypertrophy as well as on peak oxygen uptake (VO(2peak)) in older individuals. Both the BFR walk training (BFR-Walk, n = 10, age; 64 ± 1 years, body mass index [BMI]; 22.5 ± 0.9 kg/m(2)) and control walk training (CON-Walk, n = 8, age; 68 ± 1 years, BMI; 23.2 ± 1.0 kg/m(2)) groups performed 20 minutes of treadmill walking at an exercise intensity of 45% of heart rate reserve, 4 days per week, for 10 weeks. The BFR-Walk group wore pressure belts (160-200 mm Hg) on both legs during training. After the training, magnetic resonance imaging-measured thigh muscle cross-sectional area (3.1%, p < .01) and muscle volume (3.7%, p < .01) as well as maximal isometric (5.9%, p < .05) and isokinetic (up to 22%, p < .01) strength increased in the BFR-Walk group, but not in the CON-Walk group. Estimated VO(2peak) during a bicycle graded exercise test increased (p < .05) and correlated with oxygen pulse in both groups. In conclusion, BFR walk training improves both muscle volume and strength in older women.
Authors:
Hayao Ozaki; Mikako Sakamaki; Tomohiro Yasuda; Satoshi Fujita; Riki Ogasawara; Masato Sugaya; Toshiaki Nakajima; Takashi Abe
Publication Detail:
Type:  Journal Article     Date:  2010-10-25
Journal Detail:
Title:  The journals of gerontology. Series A, Biological sciences and medical sciences     Volume:  66     ISSN:  1758-535X     ISO Abbreviation:  J. Gerontol. A Biol. Sci. Med. Sci.     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-02-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9502837     Medline TA:  J Gerontol A Biol Sci Med Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  257-63     Citation Subset:  AIM; IM    
Affiliation:
Department of Human and Engineered Environmental Studies, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, Japan. ozaki.hayao@gmail.com.
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