Table 2.

Net carbohydrate and fat oxidation rates and percent change after consumption of glucose- or fructose-sweetened beverages for 10 wks¹

		Fructose	Fructose	Fructose	Glucose	Glucose	Glucose	2 sugar	2 sugar x MetSyn
	Sample	Baseline	Week 10	% change	Baseline	Week 10	% change
Carbohydrate Oxidation Rate, g/min
Fasting	All	0.16 ± 0.06	0.17 ± 0.01	14.8 ± 17.6	0.16 ± 0.01	0.18 ± 0.07	23.6 ± 11.5	0.745	0.047
Fasting	(−)MetSyn	0.16 ± 0.02	0.15 ± 0.01	−2.2 ± 8.5	0.16 ± 0.02	0.20 ± 0.02	30.4 ± 14.7
Fasting	(+)MetSyn	0.17 ± 0.04	0.20 ± 0.03	52.0 ± 52.9*	0.14 ± 0.02	0.14 ± 0.02	5.2 ± 13.9
Postprandial	All	0.24 ± 0.02	0.29 ± 0.01	23.5 ± 8.6***	0.25 ± 0.01	0.26 ± 0.01	3.8 ± 3.3	0.005	0.012
Postprandial	(−)MetSyn	0.26 ± 0.02	0.28 ± 0.01	11.9 ± 4.8	0.25 ± 0.02	0.26 ± 0.02	5.2 ± 4.2
Postprandial	(+)MetSyn	0.21 ± 0.03	0.29 ± 0.02	46.6 ± 21.8***	0.23 ± 0.02	0.23 ± 0.02	−0.04 ± 8.3
Fat Oxidation Rate, g/min
Fasting	All	0.06 ± 0.01	0.05 ± 0.01	−13.1 ± 8.0	0.06 ± 0.01	0.05 ± 0.01	−14.2 ± 14.1	0.366	0.037
Fasting	(−)MetSyn	0.06 ± 0.01	0.05 ± 0.01	−7.0 ± 7.6	0.06 ± 0.01	0.05 ± 0.01	−26.7 ± 15.5*
Fasting	(+)MetSyn	0.06 ± 0.01	0.04 ± 0.03	−26.5 ± 19.8	0.05 ± 0.01	0.05 ± 0.01	20.3 ± 27.4
Postprandial	All	0.05 ± 0.01	0.03 ± 0.01	−38.2 ± 4.8***	0.05 ± 0.01	0.04 ± 0.01	−8.6 ± 6.1	0.001	0.020
Postprandial	(−)MetSyn	0.05 ± 0.01	0.03 ± 0.01	−33.7 ± 4.3***	0.05 ± 0.01	0.04 ± 0.01	−14.1 ± 7.4*
Postprandial	(+)MetSyn	0.06 ± 0.01	0.03 ± 0.01	−47.4 ± 11.0***	0.04 ± 0.01	0.04 ± 0.01	6.3 ± 6.9

¹Values are Means ± SEM. Abbreviations: MetSyn=metabolic syndrome: (−) without; (+) with. Sample sizes in sugar x MetSyn groups are: fructose(−)MetSyn, n=11 resting, n=10 postprandial; fructose(+)MetSyn, n=5; glucose(−)MetSyn, n=11; glucose(+)MetSyn, n=4.

²PROC MIXED 3-factor ANOVA (sugar, gender, (+) or (−) MetSyn) adjusted for change in fat-free mass.

^*P < 0.05

^**P < 0.01

^***P < 0.001 for changes significantly different from zero.