Seip R L, Snead D, Pierce E F, Stein P, Weltman A
Department of Human Services, Curry School of Education, University of Virginia, Charlottesville 22903.
Med Sci Sports Exerc. 1991 Jan;23(1):80-7.
The present study investigated the effect of training state on ratings of perceived exertion obtained at the lactate threshold (LT) and fixed blood lactate concentrations (FBLC) of 2.0, 2.5, and 4.0 mM. Runners (N = 20) and nonrunners (N = 29) completed a progressive horizontal treadmill (TM) running test which allowed identification of the TM velocities associated with the LT and FBLC. Runners attained significantly higher TM velocities, greater VO2, greater VE, greater heart rate, and a lower ventilatory equivalent for oxygen (VE/VO2) at each exercise intensity, with the exceptions of heart rate at 4.0 mM and VE/VO2 at the LT. Compared to nonrunners, runners also attained higher VO2, VE, and heart rate relative to peak values at LT and 2.0, 2.5, and 4.0 mM. Despite these relative and absolute physiological differences, there were no differences between groups in local, central, or overall ratings of perceived exertion (RPE) (Borg scale) at any condition. The data from both groups were combined to give the following means and SD for overall RPE during horizontal running: at the LT-11.0 +/- 2.0, and at FBLC of 2.0 mM-13.7 +/- 2.1, 2.5 mM-14.5 +/- 1.8, and 4.0 mM-16.5 +/- 2.3.
本研究调查了训练状态对在乳酸阈值（LT）以及固定血乳酸浓度为2.0、2.5和4.0 mM时的自觉用力程度评分的影响。跑步者（N = 20）和非跑步者（N = 29）完成了一项递增式水平跑步机（TM）跑步测试，该测试可确定与LT和固定血乳酸浓度相关的跑步机速度。在每种运动强度下，跑步者的跑步机速度显著更高，摄氧量（VO2）、每分通气量（VE）、心率更高，而氧通气当量（VE/VO2）更低，但4.0 mM时的心率和LT时的VE/VO2除外。与非跑步者相比，在LT以及2.0、2.5和4.0 mM时，跑步者相对于峰值的VO2、VE和心率也更高。尽管存在这些相对和绝对的生理差异，但在任何条件下，两组之间的局部、中枢或总体自觉用力程度（RPE）评分（Borg量表）均无差异。将两组数据合并后得出水平跑步时总体RPE的以下均值和标准差：LT时为11.0±2.0，2.0 mM固定血乳酸浓度时为13.7±2.1，2.5 mM时为14.5±1.8，4.0 mM时为16.5±2.3。
