Table 3. Parameters of energy balance in juvenile (4- to 5-wk-old) and adult (12- to 14-wk-old) mdx and control mice.

Group	Juvenile				Adult						P
	mdx	Control			mdx			Control			A×G	A	G
N	8	8			9			12
Intake
24 h (kcal/d)1	11.0±0.7	11.3±0.4			11.7±0.6			10.9±0.4			NS	NS	NS
Expenditure
24 h (kcal/d)1	11.0±0.5	10.5±0.3			10.4±0.4			10±0.3			NS	NS	0.03
12 hdark (kcal/12 h)1	5.9±0.5	5.7±0.2			5.5±0.3			5.6±0.2			NS	NS	NS
12 hlight (kcal/12 h)1	5.1±0.2	4.8±0.1			4.9±0.2			4.4±0.1			NS	0.04	<0.001
Resting (kcal/d)1	9.0±0.4	8.4±0.2			6.5±0.3			6.1±0.2			NS	<0.001	0.01
Balance
24 h (kcal/d)	0.44±0.16*	1.03±0.16			0.74±0.15			0.77±0.13			0.07	NS	0.05
RQ
24 h	0.91±0.02	0.92±0.02 ‡			0.95±0.01			0.96±0.01			NS	0.004	NS
12 hdark	0.97±0.02	0.97±0.02			0.99±0.02			0.99±0.01			NS	NS	NS
12 hlight	0.84±0.02	0.87±0.02 ‡			0.92±0.02			0.93±0.01			NS	<0.001	NS

EE, energy expenditure; RQ, respiratory quotient.

¹Values are least square means adjusted for differences in FFM and fat mass±SE. Where interactions are ≤0.1:

*significant genotype effect at the same age.