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标题：Identification of the Lactate Threshold and the Heart Rate Deflection Point by the Perceived Exertion Curve
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作者：Juan Henrique Szymczak Conde ; Juan Henrique Szymczak Conde ; Tiago Burigo Guimarães Rubio 等
期刊名称：Journal of exercise physiology online
印刷版ISSN：1097-9751
出版年度：2014
卷号：17
期号：3
页码：32-38
语种：English
出版社：American Society of Exercise Physiologists
摘要：Conde JHS, Rubio TBG, Ferreira GA, Luz Coelho R, De Oliveira FR, Osiecki R. Identification of the Lactate Threshold and the Heart Rate Deflection Point by the Perceived Exertion Curve. JEPonline 2014;17(3):32-38. The purpose of this study was to identify the lactate threshold (LT) and the heart rate deflection point (HRDP) by the perceived exertion curve (DmaxRPE). Nine physically active male subjects (weight, 77.3 ± 8.9 kg; height, 177.5 ± 3.2 cm; age, 22.2 ± 2.7 yrs, and body fat, 11.3 ± 5.5%) underwent a progressive treadmill test starting at 6 km·h-1 with 1 km·h-1 increments every 2 min. No significant differences for heart rate (HR), values of perceived exertion (RPE), and intensity of the occurrence of HRDP, DmaxRPE, and LT were found (P≥0.05). Significant correlations of HR, RPE, and intensity of occurrence of HRDP when compared to LT were found (HR, r = 0.90; RPE, r = 0.91; and HRDP, r = 0.91; all P≤0.05). DmaxRPE had low correlations with FC, RPE, and intensity of occurrence of HRDP (HR, r = 0.14; RPE, r = -0.02; HRDP, r = -0.065; all P≥0.05), and also with the LT (HR, r = 0.35; PSE, r = 0.19; LT, r = 0.036; all P≥0.05). The results indicate that DmaxRPE has only reasonable predictive power to determine the LT.
关键词：Physiologic Transition Thresholds;RPE (Ratings of Perceived Exertion);HRDP (Heart Rate Deflection Point)