A single session of resistance exercise does not reduce postprandial lipaemia

Abstract

This study investigated the effect of a single session of resistance exercise on postprandial lipaemia. Eleven healthy normolipidaemic men with a mean age of 23 (standard error  =  1.4) years performed two trials at least 1 week apart in a counterbalanced randomized design. In each trial, participants consumed a test meal (1.2 g fat, 1.1 g carbohydrate, 0.2 g protein and 68 kJ · kg⁻¹ body mass) between 08.00 and 09.00 h following a 12 h fast. The afternoon before one trial, the participants performed an 88 min bout of resistance exercise. Before the other trial, the participants were inactive (control trial). Resistance exercise was performed using free weights and included four sets of 10 repetitions of each of 11 exercises. Sets were performed at 80% of 10-repetition maximum with a 2 min work and rest interval. Venous blood samples were obtained in the fasted state and at intervals for 6 h postprandially. Fasting plasma triacylglycerol (TAG) concentration did not differ significantly between control (1.03 ± 0.13 mmol · l⁻¹) and exercise (0.94 ± 0.09 mmol · l⁻¹) trials (mean ± standard error). Similarly, the 6 h total area under the plasma TAG concentration versus time curve did not differ significantly between the control (9.84 ± 1.40 mmol · l⁻¹ · 6 h⁻¹) and exercise (9.38 ± 1.12 mmol · l⁻¹ · 6 h⁻¹) trials. These findings suggest that a single session of resistance exercise does not reduce postprandial lipaemia.

Keywords:

• Energy expenditure
• substrate oxidation
• triacylglycerol
• weight lifting