The effects of a single bout of exercise on resting energy expenditure and respiratory exchange ratio

Abstract

We investigated the effects of a single bout of aerobic and resistance exercise of similar relative intensity and duration on resting energy expenditure (REE) and substrate utilisation. Ten young healthy males volunteered [age 22 (1.8) years, weight 76 (7.9) kg, height 176 (4.1) cm, percentage body fat 10.5 (4.0)%; mean (SEM)]. They randomly underwent three conditions in which they either lifted weights for 60 min at 70-75% of 1-RM (WL), ran for 60 min at 70-75% of maximal oxygen intake (R) or did not exercise (C). REE and substrate utilisation, determined via respiratory exchange ratio (R), were measured prior to exercise, and 10, 24, 48 and 72 h post-exercise. It was revealed that REE was significantly elevated (P<0.05) 10 and 24 h after the end of WL [2,124 (78) .04), respectively]. Creatine kinase was significantly elevated (P<0.05) 24 h after both WL and R, whereas delayed onset muscle soreness became significantly elevated (P<0.05) 24 h after only WL. There were no significant changes for any treatment in thyroid hormones (T 3 and T 4 ). These results suggest that a single bout of either WL or R exercise, characterised by the same relative intensity and duration, increase REE and fat oxidation for at least 24 h post-exercise.

A single bout of whole-body resistance exercise augments basal VLDL-triacylglycerol removal from plasma in healthy untrained men

“…Moreover, we observed a non-significant approx. 20 % increase in whole-body fat oxidation rate after exercise, which did not reach statistical significance, perhaps due to type II error [15,52]; hence some of the excess NEFAs after exercise may be oxidized in peripheral tissues as well. Nevertheless, exercise-induced changes in total plasma TAG concentration [53] and VLDL-TAG concentration and kinetics [5] are independent of those in basal wholebody fat oxidation.…”

General and visceral adiposity in black and white adolescents and their relation with reported physical activity and diet

“…VPA increases EE, and may also be contributing independently to the lower %BF through a temporary increase in nutrient oxidation. Resting EE has been shown to be elevated post-exercise in young men; 30 this mechanism would favour a less positive energy balance (EB). Enhanced fat oxidation from activity diminishes fat available for storage into body depots, 30,31 and especially VPA increases oxidation of certain fats.…”

“…Resting EE has been shown to be elevated post-exercise in young men; 30 this mechanism would favour a less positive energy balance (EB). Enhanced fat oxidation from activity diminishes fat available for storage into body depots, 30,31 and especially VPA increases oxidation of certain fats. 32 Our data showed no relation of MPA with %BF; perhaps the amount of MPA was insufficient to affect %BF.…”

Influência das variáveis do treinamento contra-resistência sobre o consumo de oxigênio em excesso após o exercício: uma revisão sistemática

“…De fato, são diversos os estudos que constataram que o ECR pode melhorar a oxidação lipídica, independentemente da forma de treinamento (15,17,23,24,26,28) . Apenas os estudos de Jamurtas et al (36) e Melanson et al (18) não confirmaram esses achados. Sessões de ECR parecem ser compatíveis com um gasto calórico capaz de induzir alterações favoráveis na composição corporal.…”