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不同类型抗阻运动对动脉顺应性和小腿血流的影响。

Effect of different types of resistance exercise on arterial compliance and calf blood flow.

机构信息

Department of Health and Exercise Science, Neuromuscular Research Laboratory, Univerity of Oklahoma, 1401 Asp Avenue, Norman, OK 73019, USA.

出版信息

Eur J Appl Physiol. 2011 Dec;111(12):2969-75. doi: 10.1007/s00421-011-1927-y. Epub 2011 Mar 29.

Abstract

Low-intensity blood flow restricted (LI-BFR) resistance training has been shown to produce comparable increases in muscle hypertrophy to traditional high-intensity (HI) resistance training. However, a comparison of the acute vascular responses between the two types of exercise has not been made. The purpose of this study is to compare the acute vascular responses of HI, low-intensity (LI), and LI-BFR resistance exercise. Using a randomized, cross-over design, 11 young (28 ± 5 years) males completed three acute resistance exercise bouts (HI, LI and LI-BFR). Before (Pre), and starting at 15- and 45-min after each exercise bout, large (LAEI) and small (SAEI) artery compliance and calf blood flow were assessed. Calf blood flow was normalized per unit pressure as calf vascular conductance (CVC). Repeated measures (condition × time) ANOVA revealed a main time effect for LAEI and a main condition effect for SAEI. LAEI increased following exercise but returned to baseline at 45-min post. SAEI was greater during the HI condition compared to the LI or LI-BFR conditions. There was a significant condition × time interaction for CVC. CVC was elevated at 15- and 45-min post during the HI condition and at 15-min following the LI condition. CVC was not altered following the LI-BFR condition. These results suggest that HI, LI, and LI-BFR resistance exercise cause similar acute increases in large artery compliance but HI causes greater increases in small artery compliance and calf vascular conductance than LI or LI-BFR resistance exercise.

摘要

低强度血流限制(LI-BFR)抗阻训练已被证明可产生与传统高强度(HI)抗阻训练相当的肌肉肥大增加。然而,两种运动的急性血管反应尚未进行比较。本研究旨在比较 HI、低强度(LI)和 LI-BFR 抗阻运动的急性血管反应。采用随机交叉设计,11 名年轻男性(28±5 岁)完成了三种急性抗阻运动(HI、LI 和 LI-BFR)。在运动前(Pre)以及运动后 15 分钟和 45 分钟,评估了大动脉顺应性(LAEI)和小动脉顺应性(SAEI)以及小腿血流量。小腿血流量通过单位压力标准化为小腿血管传导性(CVC)。重复测量(条件×时间)方差分析显示 LAEI 有主要的时间效应,SAEI 有主要的条件效应。运动后 LAEI 增加,但在 45 分钟后恢复到基线。与 LI 或 LI-BFR 条件相比,HI 条件下的 SAEI 更大。CVC 有显著的条件×时间交互作用。在 HI 条件下,CVC 在 15 分钟和 45 分钟时升高,在 LI 条件下,CVC 在 15 分钟时升高。LI-BFR 条件下,CVC 没有改变。这些结果表明,HI、LI 和 LI-BFR 抗阻训练引起相似的急性大动脉顺应性增加,但 HI 引起的小动脉顺应性和小腿血管传导性增加大于 LI 或 LI-BFR 抗阻训练。

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