Effect of Leg Cycling with Different Degrees of Blood Flow Restriction on Brachial Flow-Mediated Dilation

Mizuno Sahiro, Ishida Koji, Saito Mitsuru, Iwamoto Erika, Katayama Keisho

doi:10.57488/descente.43.0_34

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血流制限下での有酸素性運動の効果：血管内皮機能への影響を考慮した至適プロトコルの探索
ケツリュウセイゲンカデノユウサンソセイウンドウノコウカ : ケッカンナイヒキノウエノエイキョウオコウリョシタシテキプロトコルノタンサク

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<p>The aim of the present study was to determine the effects of different levels of blood ﬂow restriction during aerobic exercise on vascular function of the nonactive･ limb. Ten males completed 30 minutes of recumbent leg-cycling exercise at 40% of VO2max in 3 conditions:1）without blood ﬂow restriction（CON trial）,2）blood ﬂow restriction at 40% of arterial occlusion pressure（40%trial）, and3）blood ﬂow restriction at 80% of arterial occlusion pressure（80%trial）. Heart rate and blood pressure were measured continuously throughout the exercise. Brachial artery ﬂow-mediated dilation（FMD） was assessed 10, 30 and 60 minutes post exercise. Blood pressure was significantly higher during exercise in the 80%trial compared to the other conditions. There was no signiﬁcant difference in post-exercise FMD between the CON and 40%trial（Pre to Post, CON: 5.4±0.4% to 4.2±0.5%, 40%trial: 5.6±0.6% to 4.1±0.3%）. However, post exercise FMD in the 80%trial was signiﬁcantly reduced（5.4±0.5% to 2.7±0.3%）compared to the other conditions. In conclusion, aerobic exercise with blood ﬂow restriction at 40% of arterial occlusion pressure mitigated reduction in vascular function of the non-active limb. However, when blood ﬂow restriction is increased to 80% vascular function is signiﬁcantly impaired.</p>

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DESCENTE SPORTS SCIENCE

DESCENTE SPORTS SCIENCE 43 (0), 34-42, 2022-06-20

THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION OF SPORTS SCIENCE

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