Responses of forearm blood flow to graded leg exercise in man.
Responses of forearm blood flow to graded leg exercise in man.
复制标题
前臂血流对男性分级腿部运动的反应。
DOI：
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发表时间：
1979
期刊：
影响因子：
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通讯作者：
J. Johnson
中科院分区：
文献类型：
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作者：
J. Johnson
为了测试皮肤血管对运动的反应是否受到工作水平的影响，采用了三种策略。在每个实验中，整个过程中都测量了前臂血流量和食道温度。在第一部分中，比较了不同负荷下稳态运动的前臂血流量与内部温度的关系。在第二部分中，工作负载在 50 至 150 W 之间变化。在 60-75 分钟内，工作负载每 5 分钟升高或降低 50 W。第三个策略是检查前臂血流量随工作负荷的快速、大幅增加或减少而发生的立即变化。结果不支持皮肤循环对运动的分级反应。在上述第一个和第二个方案中，前臂血流量与内部温度的关系并未因工作负荷而发生明显改变。多元线性回归分析未能揭示第二部分中工作负荷的一致作用。在第三个方案中，对工作量的突然变化没有一致或持续的反应。因此，在本研究中使用的工作负荷范围内，除了对内部温度的影响之外，工作水平在调节前臂皮肤血流方面似乎没有主要作用。
To test whether the cutaneous vascular responses to exercise are influenced by the level of work, three strategies were followed. In each, forearm blood flow and esophageal temperature were measured throughout. In part I, the forearm blood flow-internal temperature relationships from separate sessions of steady-state exercise at different loads were compared. In part II, work load was varied between 50 and 150 W. Work load was raised or lowered 50 W every 5 min over 60-75 min. The third strategy was to examine the immediate change in forearm blood flow accompanying rapid, large increments or decrements in work load. The results do not support a graded response of the cutaneous circulation to exercise. In both the first and second protocols above, the relationship of forearm blood flow to internal temperature was not measurably altered by work load. Multiple linear regression analysis failed to reveal a consistent role for work load in part II. In the third protocol, there was no consistent or sustained response to an abrupt change in work load. Thus over the range of work loads used in this study there appears to be no major role for the level of work in the regulation of forearm skin blood flow other than through the effect on internal temperature.