The effect of pre-exercise protein intake on substrate metabolism, energy expenditure, and energy intake: a dose–response study
| Autor: | Wouter Michiel Peeters, Lauren Elizabetha Cook, Oliver Page |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Journal of the International Society of Sports Nutrition, Vol 20, Iss 1 (2023) |
| Druh dokumentu: | article |
| ISSN: | 15502783 1550-2783 |
| DOI: | 10.1080/15502783.2023.2275006 |
| Popis: | ABSTRACTBackground Pre-exercise protein consumption does not seem to influence substrate metabolism during exercise compared to fasted exercise, however it is unclear if the protein dose impacts on this effect.Methods In a randomized, double-blinded within-subject design trial, healthy, active males and females (n = 15, 25 ± 5 yrs, O2peak: 47.5 ± 8.8 ml/kg/min) completed 1 h of cycling exercise at 60% peak power output 30 min after having consumed either 0, 20, or 40 g of whey protein. Indirect calorimetry was used to measure substrate oxidation during exercise and baseline and post-exercise resting energy expenditure. Blood samples were taken throughout the trials to measure metabolic responses. Free-living food intake post-trial was collected using food diaries.Results Fat oxidation rates during exercise did not differ between the three conditions (p = 0.19) with small effect sizes between conditions (Cohen’s dz: 0 vs. 20 g = 0.22, 0 vs. 40 g = 0.47, 20 vs. 40 g = 0.27). Serum insulin was higher in the protein groups vs. 0 g (p |
| Databáze: | Directory of Open Access Journals |
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