Grupo de Estudo das Adaptações Fisiológicas ao Treinamento, Centro de Educação Física e Esporte, Universidade Estadual de Londrina, Londrina, PR, Brazil.
Eur J Appl Physiol. 2012 May;112(5):1637-44. doi: 10.1007/s00421-011-2123-9. Epub 2011 Aug 28.
The purpose of this study was to compare the physiological responses [oxygen uptake (VO(2)), heart rate (HR) and blood lactate concentrations ([BLa])] and the rating of perceived exertion (RPE) response until exhaustion (TTE) at the continuous (CP(c)) and intermittent (CP(i)) critical power workloads. Ten moderately active men (25.5 ± 4.2 years, 74.1 ± 8.0 kg, 177.6 ± 4.9 cm) participated in this study. The incremental test was applied to determine the highest values of oxygen uptake (VO(2max)), heart rate (HR(max)), blood lactate concentrations ([BLa(max)]), and maximal aerobic power (MAP). Continuous and intermittent exhaustive predictive trials were performed randomly. The hyperbolic relation between power and time was used to estimate CP(c) and CP(i). CP(i) was derived from predictive trial results at an effort and recovery ratio of 30:30 s. Exercise at CP(c) and CP(i) as well as the physiological and RPE responses were measured until exhaustion. The values of physiological variables during CP(c) and CP(i) did not differ in either TTE test and were lower than the VO(2max), HR(max) and [BLa(max)] values. RPE was maximal at the end of exercise at CP(c) and CP(i). There was a high correlation between VO(2max) (L min(-1)) and CP(c) and CP(i) intensities (r ≥ 0.90) and between MAP, CP(c) and CP(i) (r ≥ 0.95). Similar physiological and RPE responses were found at CP(c) and CP(i) for the times analyzed.
本研究旨在比较连续（CP(c)）和间歇（CP(i)）临界功率负荷下的生理反应[摄氧量（VO(2)）、心率（HR）和血乳酸浓度([BLa])]和主观疲劳感（RPE）的反应直至力竭（TTE）。10 名中度活跃的男性（25.5 ± 4.2 岁，74.1 ± 8.0kg，177.6 ± 4.9cm）参与了这项研究。递增测试用于确定最高摄氧量（VO(2max)）、心率（HR(max)）、血乳酸浓度([BLa(max)])和最大有氧功率（MAP）值。连续和间歇的力竭预测试验是随机进行的。功率和时间之间的双曲线关系用于估计 CP(c)和 CP(i)。CP(i)是从预测试验结果中得出的，努力和恢复比为 30:30s。在 CP(c)和 CP(i)下进行运动，以及生理和 RPE 反应一直测量到力竭。在 CP(c)和 CP(i)期间的生理变量值在两种 TTE 测试中均没有差异，并且低于 VO(2max)、HR(max)和 [BLa(max)]值。RPE 在 CP(c)和 CP(i)运动结束时达到最大值。VO(2max)（L min(-1)）与 CP(c)和 CP(i)强度（r≥0.90）以及 MAP、CP(c)和 CP(i)之间存在高度相关性（r≥0.95）。在分析的时间内，CP(c)和 CP(i)下的生理和 RPE 反应相似。
