The anaerobic threshold measurement in exercise testing.
The anaerobic threshold measurement in exercise testing.
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运动测试中的无氧阈测量。
DOI：
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发表时间：
1984
影响因子：
5.7
通讯作者：
K. Wasserman
中科院分区：
文献类型：
--
作者：
K. Wasserman
运动强度(VO2)高于此强度时，有氧能量产生开始被无氧机制补充，称为无氧阈值(AT)。在这一工作水平以上，乳酸的生产速度会加快。由于这种酸几乎完全被HCO-3缓冲，二氧化碳的产生速度超过了氧化代谢产生的速度。因此，测量这种过量的二氧化碳或其某种反映，可以在运动过程中用于无创性地测量AT。AT具有很大的生理意义，因为它界定了受试者可以长时间进行的工作速度，超过这个速度就会产生代谢酸。
The exercise intensity (VO2) above which aerobic energy production starts to be supplemented by anaerobic mechanisms is termed the anaerobic threshold (AT). Lactic acid is produced at an increased rate above this work level. Since this acid is almost completely buffered by HCO-3, the rate of CO2 production increases in excess of that being derived from oxidative metabolism. Thus measurement of this excess CO2, or some reflection of it, can be used during exercise to measure the AT noninvasively. The AT has great physiologic significance, as it demarcates the work rate that the subject can perform for a prolonged period and above which a metabolic acid occurs.