Table 3. Corticosterone (ng/ml) in mice with or without environmental enrichment.

	Male			Female
	Exercise	Control		Exercise	Control
CORT (ng/ml)	63.0 ± 13.5	148.4 ± 29.4		142.2 ± 23.4	187.0 ± 33.4
	*P=0.013			P=0.29

CORT=corticosterone, Values showed the means ± SEM, n=20 per group. *P<0.05.