Stoudemire N M, Wideman L, Pass K A, McGinnes C L, Gaesser G A, Weltman A
Department of Human Services, Curry School of Education, University of Virginia, Charlottesville 22903, USA.
Med Sci Sports Exerc. 1996 Apr;28(4):490-5. doi: 10.1097/00005768-199604000-00014.
We examined whether ratings of perceived exertion (RPE) observed during an incremental (response) protocol could be used to produce target blood [HLa] of 2.5 mM and 4.0 mM during a 30-min treadmill run at a constant RPE. RPE (15.3, 17.6, 19.1), oxygen uptake (VO2) (3.31, 3.96, 4.00 l.min-1), velocity (V) (198, 218, 223 m.min-1), and heart rate (HR) (179, 185, 190 bpm) at blood [HLa] of 2.5 mM and 4.0 mM, and peak were determined for nine subjects (5 males, 4 females) during incremental exercise. Subjects then completed two 30-min runs at the RPE corresponding to blood [HLa] of 2.5 mM (RPE 2.5 mM) and 4.0 mM (RPE 4.0 mM) measured during the incremental protocol. For both 30-min runs, VO2 was not different from VO2 corresponding to either 2.5 or 4.0 mM blood [HLa] during the incremental test. During the 30-min run at RPE 2.5 mM: (a) only during minutes 25-30 was the blood [HLa] significantly different than 2.5 mM (3.2 +/- 0.6 mM, P < 0.05), (b) for the first 20 min HR was significantly lower than the HR at 2.5 mM during the incremental protocol, and (c) V did not differ from V at 2.5 mM during the incremental protocol. During the 30-min run at RPE 4.0 mM: (a) blood [HLa] was not significantly different from 4.0 mM, (b) HR at every time point was significantly lower than HR 4.0 mM during the incremental protocol, and (c) V was decreased over time by an average of 24.6 m.min-1 (P < 0.05). Because RPE from the response protocol was able to produce a blood [HLa] close to the criterion value during each 30-min run, we conclude that RPE is a valid tool for prescribing exercise intensities corresponding to blood [HLa] of 2.5 mM and 4.0 mM.
我们研究了在递增（反应）方案中观察到的主观用力程度（RPE）评分是否可用于在以恒定RPE进行30分钟跑步机跑步期间产生2.5 mM和4.0 mM的目标血[HLa]。在递增运动期间，确定了9名受试者（5名男性，4名女性）在血[HLa]为2.5 mM和4.0 mM以及峰值时的RPE（15.3、17.6、19.1）、摄氧量（VO2）（3.31、3.96、4.00 l·min-1）、速度（V）（198、218、223 m·min-1）和心率（HR）（179、185、190 bpm）。然后，受试者以递增方案中测得的与血[HLa]为2.5 mM（RPE 2.5 mM）和4.0 mM（RPE 4.0 mM）相对应的RPE完成两次30分钟的跑步。在两次30分钟的跑步中，VO2与递增测试期间与2.5或4.0 mM血[HLa]相对应的VO2没有差异。在RPE 2.5 mM的30分钟跑步期间：（a）仅在第25 - 30分钟时，血[HLa]显著不同于2.5 mM（3.2 +/- 0.6 mM，P < 0.05），（b）在前20分钟内，HR显著低于递增方案中2.5 mM时的HR，并且（c）V与递增方案中2.5 mM时的V没有差异。在RPE 4.0 mM的30分钟跑步期间：（a）血[HLa]与4.0 mM没有显著差异，（b）每个时间点的HR均显著低于递增方案中4.0 mM时的HR，并且（c）V随时间平均下降24.6 m·min-1（P < 0.05）。由于反应方案中的RPE能够在每次30分钟跑步期间产生接近标准值的血[HLa]，我们得出结论，RPE是规定与2.5 mM和4.0 mM血[HLa]相对应的运动强度的有效工具。
