Table 2.

Substrate oxidation and respiratory exchange ratio (RER) during cycling

	Low GI bar		Moderate GI bar		Placebo*
Time	10 – 20 min	60 – 70 min	10 – 20 min	60 – 70 min	10 – 20 min	60 – 70 min
Fat	0.23 ± 0.2	0.46 ± 0.6	0.27 ± 0.1	0.47 ± 0.2	0.42 ± 0.2	0.7 ± 0.2
Oxidation(g/min)
Carbohydrate oxidation(g/min)	2.25 ± 0.6	1.83 ± 0.5	2.15 ± 0.7	1.87 ± 0.6	1.85 ± 0.5	1.31 ± 0.6
RER	0.94 ± 0.04	0.89 ± 0.03	0.93 ± 0.04	0.89 ± 0.03	0.89 ± 0.03	0.83 ± 0.01

* Significantly different in the placebo condition versus the nutrition bars conditions for all variables across all time points (p<0.05). Values are mean ± SD