Repeated bouts of exercise alter the blood lactate-RPE relation

Medicine and Science in Sports and Exercise
A WeltmanJ D Veldhuis

Abstract

To examine the effects of repeated bouts of exercise on the blood lactate [HLa]-ratings of perceived exertion (RPE) relation. Six moderately trained males were studied on two occasions: a sequential exercise bouts day (SEB: 1000 h, 1130 h, and 1300 h) and a delayed exercise bouts day (DEB: 1000 h, 1400 h, and 1800 h). Each of the three exercise bouts within a given condition were 30 min in duration at the power output (PO) associated with 70% of VO2peak on a cycle ergometer. A standardized meal was provided at 0600 h. VO2, PO, HR, and RER were recorded every min during exercise and blood [HLa] and RPE were measured every 5 min during exercise. A 2 x 3 analysis of variance with repeated measures revealed that blood [HLa] decreased significantly with each repeated exercise bout (X +/- SEM: bout 1: SEB = 3.5 (0.3), DEB = 3.8 (0.4); bout 2: SEB = 2.6 (0.3), DEB = 2.8 (0.3); bout 3: SEB = 2.0 (0.2), DEB = 2.1 (0.4); mM). No differences were observed in the blood [HLa] response to repeated bouts of exercise between SEB and DEB. RPE-peripheral (legs, RPE-L) was higher during bout 3 compared with bout 1 (P <0.05) (bout 1: SEB = 11.8 (0.8), DEB = 12.3 (0.2); bout 2: SEB = 12.3 (0.5), DEB = 13.3 (0.4); bout 3: SEB = 13.5 (0.8), DEB = 14....Continue Reading

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Citations

Jan 6, 2006·Medicine and Science in Sports and Exercise·James M GreenRichard G Lomax
Jan 11, 2008·Clinical Journal of Sport Medicine : Official Journal of the Canadian Academy of Sport Medicine·Satpal Dhillon
Jul 19, 2013·Journal of Strength and Conditioning Research·Asier Los ArcosCarlo Castagna
Apr 6, 2000·Journal of Applied Physiology·V StichF Crampes
Jul 25, 2012·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Xavier ChenevièreDavide Malatesta
Mar 19, 2016·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Ulrika Andersson HallKlavs Madsen
Jan 21, 2021·Journal of Functional Morphology and Kinesiology·Andrea FuscoCarl Foster

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