Meyer T, Gabriel H H, Kindermann W
Institute of Sports and Preventive Medicine, University of the Saarland, Saarbrücken, Germany.
Med Sci Sports Exerc. 1999 Sep;31(9):1342-5. doi: 10.1097/00005768-199909000-00017.
Often exercise intensities are defined as percentages of maximal oxygen uptake (VO2max) or heart rate (HRmax).
The purpose of this investigation was to test the applicability of these criteria in comparison with the individual anaerobic threshold.
One progressive cycling test to exhaustion (initial stage 100 W, increment 50 W every 3 min) was analyzed in a group of 36 male cyclists and triathletes (24.9 +/- 5.5 yr; 71.6 +/- 5.7 kg; VO2max: 62.2 +/- 5.0 mL x min(-1) x kg(-1); individual anaerobic threshold = IAT: 3.64 +/- 0.41 W x kg(-1); HRmax: 188 +/- 8 min). Power output and lactate concentrations for 60 and 75% of VO2max as well as for 70 and 85% of HRmax were related to the IAT.
There was no significant difference between the mean value of IAT (261 +/- 34 W, 2.92 +/- 0.65 mmol x L(-1)), 75% of VO2max (257 +/- 24 W, 2.84 +/-0.92 mmol x L(-1)), and 85% of HRmax (259 +/- 30 W, 2.98 +/- 0.87 mmol L(-1)). However, the percentages of the IAT ranged between 86 and 118% for 75% VO2max and 87 and 116% for 85% HRmax (corresponding lactate concentrations: 1.41-4.57 mmol x L(-1) and 1.25-4.93 mmol x L(-1), respectively). The mean values at 60% of VO2max (198 +/- 19 W, 1.55 +/- 0.67 mmol x L(-1)) and 70% of HRmax (180 +/- 27 W, 1.45 +/- 0.57 mmol x L(-1)) differed significantly (P < 0.0001) from the IAT and represented a wide range of intensities (66-91% and 53-85% of the IAT, 0.70-3.16 and 0.70-2.91 mmol x L(-1), respectively).
In a moderately to highly endurance-trained group, the percentages of VO2max and HRmax vary considerably in relation to the IAT. As most physiological responses to exercise are intensity dependent, reliance on these parameters alone without considering the IAT is not sufficient.
运动强度通常被定义为最大摄氧量（VO2max）或心率（HRmax）的百分比。
本研究的目的是测试这些标准与个体无氧阈相比的适用性。
对一组36名男性自行车运动员和铁人三项运动员进行一次递增式力竭骑行测试（初始阶段100瓦，每3分钟增加50瓦）（24.9±5.5岁；71.6±5.7千克；VO2max：62.2±5.0毫升·分钟⁻¹·千克⁻¹；个体无氧阈 = IAT：3.64±0.41瓦·千克⁻¹；HRmax：每分钟188±（原文此处有误，推测应为188±8次））。将VO2max的60%和75%以及HRmax的70%和85%时的功率输出和乳酸浓度与IAT进行关联。
IAT的平均值（261±34瓦，2.92±0.65毫摩尔·升⁻¹）、VO2max的75%（257±24瓦，2.84±0.92毫摩尔·升⁻¹）和HRmax的85%（259±30瓦，2.98±0.87毫摩尔·升⁻¹）之间无显著差异。然而，对于VO2max的75%，IAT的百分比在86%至118%之间，对于HRmax的85%，IAT的百分比在87%至116%之间（相应的乳酸浓度分别为1.41 - 4.57毫摩尔·升⁻¹和1.25 - 4.93毫摩尔·升⁻¹）。VO2max的60%（198±19瓦，1.55±0.67毫摩尔·升⁻¹）和HRmax的70%（180±27瓦，1.45±0.57毫摩尔·升⁻¹）的平均值与IAT有显著差异（P < 0.0001），并且代表了广泛的强度范围（分别为IAT的66% - 91%和53% - 85%，0.70 - 3.16毫摩尔·升⁻¹和0.70 - 2.91毫摩尔·升⁻¹）。
在中度至高度耐力训练的群体中，VO2max和HRmax的百分比相对于IAT有很大差异。由于大多数运动的生理反应取决于强度，仅依赖这些参数而不考虑IAT是不够的。
