摘要：Zagatto AM, Miyagi WE, Sakugawa RL, Kaminagakura ET, Papoti M. Aerobic Endurance Measurement by Respiratory Exchange Ratio during a Cycle Ergometer Graded Exercise Test. JEPonline 2012;15(5):49-56. The purpose of this study was to verify that the use of intensity at the respiratory exchange rate (RER) value of 1.00 (iRER=1.00) can be used to estimate aerobic endurance during a cycle ergometer graded exercise test. The iRER=1.00 of 25 active males (22±1 yrs) was compared with respiratory compensation point (RCP), anaerobic threshold of abrupt lactate increase (AnTLAC), and the intensity of blood lactate concentration at 3.5 mmol·L -1 (OBLA3.5). Respiratory and blood lactate responses were measured during a maximal cycle ergometer graded exercise test (GXT) to determine iRER=1.00, RCP, AnTLAC and OBLA3.5. In addition, the heart rate (HR) and rate of perceived exertion (RPE) were measured during the GXT. iRER=1.00 (123.8±5.6 W) did not differ with RCP (126.8±6.5 W), AnTLAC (129.5±5.3 W), and OBLA3.5 (120.8±6.5 W) intensities; whereas, iRER=1.00 was significantly correlated with RCP (r = 0.94), OBLA3.5 (r = 0.86), and AnTLAC (r = 0.74), and iRER=1.00 shown good agreement with other intensities. Similar results were found with VO2, HR, blood lactate, and RPE at these intensities. We conclude that iRER=1.00 can be used to estimate aerobic endurance intensity in cycle ergometer exercise.
