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. Author manuscript; available in PMC: 2012 Jan 1.

Published in final edited form as: J Womens Health Phys Therap. 2011 WINTER;35(1):11–18. doi: 10.1097/JWH.0b013e318212570c

Table 3. Analysis of Variance for Body Weight-Adjusted Strength (Races Combined).

	Age Groups			Statistics			Multiple Comparisons^a

Muscle Groups	20-39 years (Group 1) n = 139	40-54 years (Group 2) (n = 300)	55+ years (Group 3) (n = 424)	F	P	Effect Size	1/2	1/3	2/3
Hand grip	0.42 (0.10)^b	0.39 (0.09)	0.35 (0.09)	13.7	<.001	0.031		^*	^*
Hip abductors	0.74 (0.27)	0.65 (0.27)	0.59 (0.26)	15.1	<.001	0.034	^*	^*
Hip external rotators	0.40 (0.14)	0.37 (0.14)	0.32 (0.13)	12.3	<.001	0.028		^*	^*
Knee extensors	1.32 (0.40)	1.21 (0.39)	1.05 (0.36)	20.8	<.001	0.046	^*	^*	^*
Knee flexors	0.64 (0.23)	0.59 (0.21)	0.51 (0.20)	19.0	<.001	0.042	^*	^*	^*

^a

Bonferroni post hoc comparisons were conducted.

^b

Values are mean (SD) for body weight adjusted strength.

^*

A significant difference between the means of the indicated age groups at an alpha level of .05.