Elborn J S, Riley M, Stanford C F, Nicholls D P
Royal Victoria Hospital, Belfast, Northern Ireland.
Presse Med. 1994 Feb 26;23(8):367-71.
Anaerobic threshold was measured to examine its relationship with venous lactate levels and the reproducibility of gas exchange methods.
Twenty patients with chronic cardiac failure due to ischaemic heart disease underwent two successive treadmill tests with measurements of respiratory gas exchange.
An anaerobic threshold was demonstrated in 78 p. 100 of tests, by plotting either VE/VO2 or VCO2/VO2, and reproducibility between the two tests was satisfactory. Peripheral venous lactate levels did not increase from rest to the end of the exercise stage prior to the anaerobic threshold, but did increase significantly thereafter. Where an anaerobic threshold could be demonstrated, it was reproducible and correlated strongly with peak achieved VO2.
However, as measurement of anaerobic threshold requires exercise to 90 p. 100 maximum VO2, it may be preferable to continue until limiting symptoms, and use peak achieved VO2 as the end point. Anaerobic threshold is a reproducible measure of anaerobic exercise capacity.
测量无氧阈，以研究其与静脉血乳酸水平的关系以及气体交换方法的可重复性。
20例因缺血性心脏病导致慢性心力衰竭的患者连续进行两次跑步机测试，并测量呼吸气体交换情况。
通过绘制VE/VO2或VCO2/VO2曲线，在78%的测试中显示出无氧阈，两次测试之间的可重复性良好。外周静脉血乳酸水平在无氧阈之前的运动阶段从休息到结束时并未升高，但此后显著升高。在能够显示无氧阈的情况下，其具有可重复性，且与达到的峰值VO2密切相关。
然而，由于测量无氧阈需要运动至最大VO2的90%，可能更倾向于持续运动直至出现受限症状，并将达到的峰值VO2作为终点。无氧阈是无氧运动能力的一种可重复测量指标。
