Garcin M, Danel M, Billat V
University Lille 2, FSSEP, Ronchin, France.
Int J Sports Med. 2008 Jun;29(6):453-9. doi: 10.1055/s-2007-989237. Epub 2007 Nov 14.
The purpose of the present investigation was to study the influence of free versus constant pace on perceived exertion (RPE) and estimated time Limit (ETL). Ten athletes performed a graded test aimed to determine maximal oxygen uptake (VO2max) and the velocity associated with VO2max (vVO2max), a constant run to exhaustion at 90 % vVO2max to determine the time and distance to exhaustion at this relative velocity, a free paced run over the distance to exhaustion set by the time to exhaustion at 90 % vVO2max. Oxygen uptake and velocity during constant pace and free pace runs were both averaged throughout the entire period of exercise and without the last lap. The results did not show any significant effect of free versus constant pace on RPE and ETL. Averaged oxygen uptake between free and constant pace runs was not significantly different, whereas averaged vVO2max, % vVO2max and time to exhaustion was significantly higher for free pace runs only for the entire exercise. Consequently, compared to the constant pace run, the free pace one only allowed athletes to finish the run by a sprint which was effective in increasing performance, but not to perceive the free pacing run as being less strenuous than the constant pace one.
本研究的目的是探讨自由节奏与恒定节奏对主观用力感觉（RPE）和预计时限（ETL）的影响。10名运动员进行了一项分级测试，旨在确定最大摄氧量（VO2max）以及与VO2max相关的速度（vVO2max），以90% vVO2max的速度进行恒定速度跑至力竭，以确定在此相对速度下的力竭时间和距离，以90% vVO2max力竭时间所设定的距离进行自由节奏跑。恒定节奏跑和自由节奏跑期间的摄氧量和速度在整个运动期间（不包括最后一圈）进行平均。结果显示，自由节奏与恒定节奏对RPE和ETL没有显著影响。自由节奏跑和恒定节奏跑之间的平均摄氧量没有显著差异，而仅在整个运动中，自由节奏跑的平均vVO2max、% vVO2max和力竭时间显著更高。因此，与恒定节奏跑相比，自由节奏跑仅能让运动员通过冲刺完成跑步，这有效地提高了成绩，但并未让他们感觉自由节奏跑比恒定节奏跑更轻松。
