Carbohydrate ingestion does not suppress increases in fatty acid-binding protein 4 concentrations post-acute aerobic exercise in healthy men: a randomized crossover study

Table 2 Changes in expired gas and substrate oxidation during aerobic exercise in the CE, and FE trials

	Before Ex	10 min	20 min	30 min	40 min	p value			Mean ± SD (40-min exercise)
	Before Ex	10 min	20 min	30 min	40 min	Interaction	Trial	Time	Mean ± SD (40-min exercise)
Vo₂(mL/min)
CE	282 ± 60	1049 ± 129	1052 ± 116	1052 ± 107	1059 ± 87	0.679	0.352	< 0.001	1050 ± 96
FE	248 ± 58	1019 ± 136	1046 ± 127	1046 ± 80	1046 ± 80	0.679	0.352	< 0.001	1039 ± 91
%Vo₂ peak(%)
CE	11.1 ± 2.6	41.1 ± 5.3	41.3 ± 4.9	40.8 ± 4.8	41.5 ± 3.7	0.550	0.326	< 0.001	41.2 ± 4.2
FE	9.8 ± 2.6	39.9 ± 5.0	40.9 ± 4.1	41.1 ± 4.0	41.0 ± 3.3	0.550	0.326	< 0.001	40.7 ± 3.4
RER
CE	0.94 ± 0.14*	0.92 ± 0.06	0.89 ± 0.06	0.88 ± 0.05	0.90 ± 0.04*	0.131	0.014	0.483	0.90 ± 0.05 *
FE	0.86 ± 0.14	0.89 ± 0.06	0.86 ± 0.05	0.87 ± 0.05	0.85 ± 0.06	0.131	0.014	0.483	0.87 ± 0.05
Energy expenditure(kcal/min)
CE	1.58 ± 0.52	5.40 ± 0.67	5.34 ± 0.53	5.18 ± 0.51	5.37 ± 0.40	0.237	0.223	0.900	5.32 ± 0.46
FE	1.33 ± 0.33	5.20 ± 0.76	5.18 ± 0.62	5.25 ± 0.40	5.19 ± 0.40	0.237	0.223	0.900	5.21 ± 0.46
Carbohydrate oxidation(g/min)
CE	0.28 ± 0.19	1.06 ± 0.31*	0.89 ± 0.27*	0.86 ± 0.22	0.95 ± 0.20 *	0.277	0.011	0.014	0.94 ± 0.22 *
FE	0.20 ± 0.16	0.84 ± 0.30	0.74 ± 0.24	0.77 ± 0.22	0.73 ± 0.26	0.277	0.011	0.014	0.77 ± 0.22
Fat oxidation (g/min)
CE	0.05 ± 0.05	0.13 ± 0.11 *	0.20 ± 0.11	0.19 ± 0.07	0.18 ± 0.08 *	0.539	0.003	0.029	0.17 ± 0.08 *
FE	0.06 ± 0.04	0.21 ± 0.10	0.25 ± 0.10	0.24 ± 0.10	0.25 ± 0.11	0.539	0.003	0.029	0.24 ± 0.10

Values are presented as means ± standard deviation. Vo₂, oxygen uptake; RER, respiratory exchange ratio; heart rate; CE, a carbohydrate ingestion exercise trial; FE, a fasted exercise trial. *, vs. FE (p < 0.05)

ISSN: 2052-1847