JSSM- 2007, Vol.6, Issue 3, 343

Table 1. Substrate oxidation during exercise in children, adolescents and adults with CHO or water intake.

	Age (years)	CHO intake Ex. protocol	Treatment	Time (min)	RER ¹	Substrate Fat (%)	Oxidation CHO(%)
Riddell, 2000a	15	1.5 g·kg^-1·h^-191 g·h^-1	water	60	0.92	20-25	80-75
		60 min at 60% peak VO₂	CHO	60	0.94	18-23	82-77
Riddell, 2000b	15	1.4 g·kg^-1·h^-1~170 g·2h^-1	control	60 90	0.92 - 0.91 - 0.91	24-30 24-54	76-70 76-46
		120 min at 60% peak VO₂	CHO	60 90	0.95 - 0.94 - 0.93	15-23 15-20	85-77 85-80
Riddell, 2001	12.5	~1.5 g·kg^-1·h^-167 ±15 g·h^-1 approx av. for G & GF drinks	control	30-60 90	0.87 - 0.83 - 0.83	40-55 40-55	60-45 60-45
		90 min at 55% peak VO₂	CHO	30-60 90	0.90 - 0.86 - 0.85	32-45 32-45	67-55 67-55
Timmons, 2001	10	~1.4 g·kg^-1·h^-1boys ~50 g·h^-1men ~119 g·h^-160 min at 70% peak VO₂	control boys control men CHO boys CHO men	30-60 30-60 30-60 30-60	0.91 - 0.88 0.96 - 0.93 0.91 - 0.91 0.96 - 0.94	32-35 15-20 30-30 15-18	68-65 85-80 70-70 85-82
Montfort, 2005	15-17	1.4 g·kg^-1·h^-1 65 ±7.2 g · h^-1	control	30-60 90	0.96 – 0.95 0.93	11-15 19	89-85 - 81
		~ 102 g ·90 min	CHO	30-60 90	0.96 – 0.96 0.94	10-10 17	90-90 - 83
Riddell, 2003	adults	1 g·kg^-1·h^-1~ 78 g · h^-1 ~ 117 g ·90 min	control ² adults	60 90	0.95 - 0.92 - 0.91	22	72
		90 min at 60% peak VO₂	CHO adults	60 90	0.97 - 0.94 - 0.94	16	80

¹ RER does not include resting values; ²Substrate oxidation data (% fat and carbohydrate) represent the last 60 min of exercise.