THE ANAEROBIC THRESHOLD MEASUREMENT TO EVALUATE EXERCISE PERFORMANCE
THE ANAEROBIC THRESHOLD MEASUREMENT TO EVALUATE EXERCISE PERFORMANCE
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DOI：
10.1164/arrd.1984.129.2p2.s35
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发表时间：
1984-01-01
期刊：
影响因子：
--
通讯作者：
WASSERMAN, K
中科院分区：
文献类型：
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作者：
WASSERMAN, K
在运动过程中，有氧能量的产生被无氧机制补充，从而导致乳酸显著增加的耗氧量称为无氧阈值。这一功率输出具有重要的功能意义，因为它是工作速度的分界线，超过该速度，代谢性酸中毒会加速对呼吸的刺激，运动耐力会降低。提出了运动中乳酸增加与组织无氧有关的理由，并描述了测量AT的气体交换方法。工作形式会影响AT，在久坐不动的受试者中，跑步机比骑车高出约10%。这对于预测受试者在较长一段时间内维持给定工作速度的能力以及确定在满足组织O2要求时存在心血管功能不足的VO2是有用的。
During exercise, the oxygen consumption above which aerobic energy production is supplemented by anaerobic mechanisms, and which results in a significant increase in lactate, is termed the anaerobic threshold (AT). This power output has important functional implications because it is a demarcation of the work rate above which metabolic acidosis accelerates the stimulation to breathing, and exercise endurance becomes reduced. The justification for relating lactate increase to tissue anaerobiosis during exercise is presented, and the gas exchange methods for measuring the AT are described. The form of work affects the AT, treadmill being about 10% greater than cycling in sedentary subjects. It is useful for predicting the ability of the subject to sustain a given work rate for a prolonged period and for determining the Vo2above which there is cardiovascular insufficiency in meeting tissue O2requirements.