Blood flow and metabolic control at the onset of heavy exercise.
Blood flow and metabolic control at the onset of heavy exercise.
复制标题
剧烈运动开始时的血流和代谢控制。
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
M. Hopman
中科院分区：
文献类型：
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作者：
R. Hughson;H. Schrijvens;S. Burrows;Deanna L Devitt;A. Betik;M. Hopman
如果之前进行了类似的一轮剧烈运动，那么在一轮剧烈运动开始时的摄氧量（VO 2）增加速度会更快。我们测试的假设，在沉重的腿部运动，腿部血流量（LBF）和VO 2都将在适应阶段升高。在三个独立的日子里，六名健康的年轻男性完成了两轮6分钟的膝盖伸展/屈曲运动，约85%的VO 2峰值由5分钟0瓦的运动分开的电制动测力计。多普勒超声测定LBF。在第二次运动中，LBF和VO 2在运动前和整个运动过程中显著升高。平均反应时间（基线和计算的最终值之间的差异达到63%的时间）和运动第3分钟和第6分钟之间的VO 2差异均表明，在第二次剧烈运动中，达到最终运动值的速度明显更快。这些数据表明，在第二轮高强度运动中LBF升高，支持在高强度运动开始时O2输送和氧化代谢适应之间的联系。
The rate of increase in oxygen uptake (VO2) at the onset of a bout of heavy exercise is faster if it is preceded by a similar bout of heavy exercise. We tested the hypothesis during heavy leg exercise that leg blood flow (LBF) and VO2 would both be elevated during the adaptive phase. On three separate days, six healthy young men completed two bouts of 6-minutes of knee extension / flexion exercise at about 85% VO2peak separated by 5-minutes 0-watt exercise on an electrically braked ergometer. LBF was determined by Doppler ultrasound. In the second exercise bout, LBF and VO2 were significantly elevated in the baseline before exercise and throughout the exercise. Both the mean response time (time to 63% of difference between baseline and calculated end value) and the difference in VO2 between minutes 3 and 6 of exercise indicated significantly faster attainment of the end exercise value in the second heavy exercise bout. These data showing the elevated LBF in the second bout of heavy exercise support the link between O2 delivery and the adaptation of oxidative metabolism at the onset of heavy exercise.
影响因子：
15.9
作者：
RICHARDSON, RS;NOYSZEWSKI, EA;WAGNER, PD
通讯作者：
WAGNER, PD