Table I.

QNMR body mass and Oxymax metabolic profiles^a of 13-month-old WT and St3gal2-null littermates

Metric	WT	St3gal2-null	Null/WT	P-valueb
Weight (g)	37.6 ± 0.7	45.9 ± 1.0	1.22	<0.001
Fat mass (g)	12.8 ± 0.9	19.2 ± 0.5	1.50	<0.005
Lean mass (g)	22.6 ± 0.3	24.7 ± 0.7	1.09	<0.05
%fat	34.0 ± 1.9	41.9 ± 0.7	1.23	<0.005
Fat/lean ratio	0.57 ± 0.05	0.78 ± 0.02	1.37	<0.005
VO2 c	3000 ± 106	2560 ± 34	0.85	<0.005
VCO2 c	2960 ± 96	2450 ± 44	0.96	<0.001
RER	0.99 ± 0.01	0.96 ± 0.01	0.97	<0.02
EEc	15.1 ± 0.5	12.8 ± 0.2	0.85	<0.005
VO2 d	4970 ± 93	4760 ± 97	0.97	0.15
VCO2 d	4910 ± 66	4570 ± 109	0.97	<0.05
RER	0.99 ± 0.01	0.96 ± 0.01	0.97	<0.02
EEd	25.0 ± 0.4	23.8 ± 0.5	0.95	0.10

^aVO₂, oxygen consumption rate (mL/kg/h); VCO₂, carbon dioxide production rate (mL/kg/h); RER, respiratory exchange ratio; EE, energy expenditure (kcal/kg/h).

^bStudent's t-test, n = 6 per genotype.

^cNormalized to kg body weight.

^dNormalized to kg lean weight.