Table 2.

VO₂, VCO₂, RER, HR, and RPE during 1 h exercise trials in the heat, with and without CHO

	Placebo			CHO
	4 min	24 min	54 min	4 min	24 min	54 min
VO2 (L · min-1)	2.91 ± 0.10	3.21 ± 0.15	3.63 ± 0.19*	3.01 ± 0.16	3.25 ± 0.16	3.52 ± 0.22*
VCO2 (L · min-1)	2.64 ± 0.07	2.79 ± 0.12	3.11 ± 0.17*	2.72 ± 0.13	2.87 ± 0.15	3.10 ± 0.19*
RER	0.91 ± 0.01	0.87 ± 0.01	0.86 ± 0.01†	0.90 ± 0.01	0.88 ± 0.01	0.88 ± 0.01†
HR (beats · min-1)	138.5 ± 6.7	158.9 ± 5.4	172.6 ± 4.9*	151.4 ± 5.9	162.0 ± 5.4	173.1 ± 4.4*
RPE	12.6 ± 0.3	15.0 ± 0.5	17.8 ± 0.6*	12.4 ± 0.5	15.1 ± 0.5	17.9 ± 0.4*

^*p < 0.05 main effect of time; ^† p < 0.05 main effect of trial X time.