. Author manuscript; available in PMC: 2014 Jun 17.

Published in final edited form as: Arch Phys Med Rehabil. 2013 Jul 5;94(12):2365–2372. doi: 10.1016/j.apmr.2013.06.020

Table 2.

Direct and indirect effects of variables testing whether physical activity performance mediates the relationship of physical activity capacity to overall total, diversity, and intensity of participation

Dependent Variables	Predictor Variables	c (P)	c′ (P)	ab (P)	R²	% Mediated Effect
Total	GMFM-66-IS	.66 (<.001)			.43
ASKp-30	GMFM-66-IS	.59 (<.001)			.69
Total	GMFM-66-IS and ASKp-30		.13 (.22)	.83 (<.001)	.66	74.9
Diversity	GMFM-66-IS	.52 (<.001)			.21
ASKp-30	GMFM-66-IS	.59 (<.001)			.69
Diversity	GMFM-66-IS and ASKp-30		.24 (.13)	.47 (.001)	.27	52.8
Intensity	GMFM-66-IS	.19 (.170)			.24
ASKp-30	GMFM-66-IS	.56 (<.001)			.69
Intensity	GMFM-66-IS and ASKp-30		.02 (.99)	.32 (.030)	.26	94.5

NOTE. Model controlled for the confounders of age, sex, GMFCS level, and ratio of lean body mass/knee height.

Physical activity capacity = GMFM-66-IS Total

Physical Activity Performance = Activities Scale for Kids (ASKp-30).

Abbreviations: Diversity, CAPE total diversity score; Intensity, CAPE total intensity score; Total, LIFE-H total weighted score.