Table 3.

p Values for Main Effects of Age, Exercise, and the Age × Exercise Interaction on Percent Difference

Criteria	2×2 ANCOVA			2×2 × 2 Repeated Measures ANCOVA
	Age	Exercise	Age × Exercise	Age	Exercise	Age × Exercise
Grip	.004*	.094†	.561	-	-	.026*
Rotarod	-	<.001*	.045*	-	<.001*	<.001*
Endurance	-	<.001*	.040*	-	<.001*	.001*
Activity‡	N/A			N/A

Notes: p Values given for the repeated measures ANCOVA were from the within-subject test. Main effects reported with the caveat that with a significant age × exercise interaction, the main effect is tempered by and depends upon the interaction. ANCOVA = analysis of covariance; - = no difference.

*Significant at p < .05.

^† p = .051–.100.

^‡Activity level was only tested in exercise groups; but the ANCOVA was not significant.