著者

根本 賢二 海保 享代 伊藤 挙 吉岡 耕一 牧 亮

出版者

国士舘大学体育・スポーツ科学学会

雑誌

体育・スポーツ科学研究 = Kokushikan society of sport science (ISSN:18809316)

巻号頁・発行日

vol.15, pp.63-73, 2015-03-01

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Objective This study investigated the efficacy, durability and possible adverse effects of passive legraising( PLR) by examining the entire course of cardiovascular responses to PLR. Methods/results Continuous measurements of cardiovascular parameters were performed on eight healthy subjects, using a non-invasive finger blood pressure measurement system during PLR. Blood pressure significantly increased during PLR at each angle of raise:20°, 30°, and 40°.This blood pressure increase was found to be mainly due to an increase in stroke volume, which remained almost constant until the end of the 10 minutes of PLR. No significant differences in values of cardiovascular parameters were found between the different raise angles. Transient changes in cardiovascular parameters occurred when legs were returned to the horizontal position, including considerable transient falls of stroke volume and total peripheral vascular resistance. In patients with deteriorated cardiovascular functions, this might cause a severe transient fall of blood pressure triggering cerebral ischemic attack. Conclusion PLR increased blood pressure mainly due to an increase in stroke volume. The raise angle of 20°was sufficient to produce this PLR effect.