Table 4.

Blockwise multiple regression analyses for changes in three performance outcome measures with capacity change scores and patient characteristics (age, GMFCS) as independent variables (0–24 weeks)

Multiple regression with 0–24 weeks change scores for performance outcomes as dependent	∆24CPM all day (n = 55)		∆24CPM after school (n = 55)		∆24%Sedentary (n = 55)
	Β	P	β	P	β	P
Block 1: capacity change scores 0–24 weeks
∆24GMFM (score)	0.1	.993	4.5	.668	−0.01	.972
∆24FMS (number STS)	8.8	.314	14.6	.220	−0.5	.042 *
∆24Walking speed with shoes/AFOs (m/s)	156.1	.102	208.4	.107	−5.0	.036 *
R 2 total	0.07	.285	0.09	.168	0.16	.030 *
Block 2: capacity change scores 0–24 weeks, adjusted for age and GMFCS level
∆24GMFM (score)	0.3	.973	3.2	.763	0.01	.959
∆24FMS (number STS)	8.4	.363	17.4	.161	−0.5	.036 *
∆24Walking speed with shoes/AFOs (m/s)	157.3	.123	218.4	.111	−5.3	.039 *
Age (in years)	−1.3	.907	11.0	.457	−0.2	.536
GMFCS levels (I–III)	8.0	.805	−32.7	.455	0.3	.722
R 2 change	0.00	.967	0.02	.637	0.01	.801
R 2 total	0.07	.581	0.11	.314	0.17	.101

Abbreviations: AFOs, ankle foot orthoses; CPM, counts per minute; GMFM, Gross Motor Function Measure; FMS, functional muscle strength; STS, sit‐to‐stand test.

^* P < .05.