Table 2.

Treatment Comparisons on Physical Activity Measures

	MI Intervention Group (n=107)	p- value*	Education Control (n=109)	p- value*	P-value (MI vs. EC)
PRIMARY OUTCOME
% subjects with ≥ 30-minute increment of MVPA (CHAMPS) at 6-mo follow-up¥	54 (54%)		53 (52%)		0.89
SECONDARY OUTCOMES
Change in time spent on MVPA (CHAMPS: hours/wk) from baseline†
Overall	2.2 (0.2)		1.3 (0.2)		0.01
Week 12	2.6 (0.4)	<0.01	1.1 (0.4)	<0.01	<0.01
3-mo follow-up	1.9 (0.4)	<0.01	1.6 (0.4)	<0.01	0.67
6-mo follow-up	2.0 (0.4)	<0.01	1.2 (0.4)	<0.01	0.19
Change in time spent on MVPA (ActiGraph: minutes/wk) from baseline
Overall	−21.64 (6.8)		−17.74 (6.7)		0.68
Week 12	−6.26 (9.7)	0.52	−27.02 (10.0)	<0.01	0.14
3-mo follow-up	−24.04 (12.6)	0.06	−3.57 (12.3)	0.77	0.25
6-mo follow-up	−34.63 (8.8)	<0.01	−22.63 (8.9)	<0.05	0.34
Six-minute walk test (meters)¶
Overall	38.5 (4.4)		21.4 (4.4)		<0.01
Week 12	33.0 (6.2)	<0.01	18.1 (6.0)	<0.01	0.09
6-mo follow-up	43.9 (6.3)	<0.01	24.8 (6.3)	<0.01	0.03

^¥Used last observation carried forward approach. Data for the secondary outcomes are expressed as mean changes (standard error) from study entry. All analyses controlled for baseline value of the outcome variable and body mass index.

^*p-values for testing within group mean changes from baseline.

^†Positive change in CHAMPS represents an increased in the number of hours/week of moderate-vigorous physical activity (MVPA) at follow-up.

^¶Positive change in the six-minute walk test represents an ability to walk longer distance at follow-up. The six-minute walk test was not measured at 3-month follow-up. CHAMPS: Community Health Activities Model Program for Seniors.