Author:
Hori Amane,Saito Ryuji,Suijo Kenichi,Kushnick Michael R.,Hasegawa Daisuke,Ishida Koji,Hotta Norio
Abstract
AbstractIt is unclear whether blood flow restriction (BFR) accelerates the adaptation of the time constant (τ) of phase II oxygen uptake ($$ {\dot{\text{V}}}{\text{O}}_{2} $$
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) kinetics in the moderate-intensity exercise domain via moderate-intensity aerobic training. Therefore, healthy participants underwent moderate-intensity [45–60% $$ {\dot{\text{V}}}{\text{O}}_{2} $$
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Reserve] aerobic cycle training with or without BFR (BFR group, n = 9; CON group, n = 9) for 8 weeks to evaluate $$ {\dot{\text{V}}}{\text{O}}_{2} $$
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kinetics during moderate-intensity cycle exercise before (Pre) and after 4 (Mid) and 8 (Post) weeks of training. Both groups trained for 30 min, 3 days weekly. BFR was performed for 5 min every 10 min by applying cuffs to the upper thighs. The τ significantly decreased by Mid in the BFR group (23.7 ± 2.9 s [Pre], 15.3 ± 1.8 s [Mid], 15.5 ± 1.4 s [Post], P < 0.01) and by Post in the CON group (27.5 ± 2.0 s [Pre], 22.1 ± 0.7 s [Mid], 18.5 ± 1.9 s [Post], P < 0.01). Notably, the BFR group’s τ was significantly lower than that of the CON group at Mid (P < 0.01) but not at Post. In conclusion, BFR accelerates the adaptation of the $$ {\dot{\text{V}}}{\text{O}}_{2} $$
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kinetics of phase II by moderate-intensity aerobic training.
Funder
Japan Society for the Promotion of Science
Kozuki Foundation for Sports and Education
Science Research Promotion Fund from the Promotion and Mutual Aid Corporation for Private Schools of Japan
Mitsui Life Social Welfare Foundation
Publisher
Springer Science and Business Media LLC
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