Table 3.

Longitudinal relationships^a between 400 m walk time and leisure physical activity (LTPA)^b and body composition parameters from baseline to the 48 month follow-up visit, stratified by randomized group assignment.

	Lifestyle Change				Health Education				Test for equality of slope p value
	n	Slope Estimate	Standard Error	p value	n	Slope Estimate	Standard Error	p value
Leisure Physical Activity, MET·hr·wk−1	190	−5.21	1.64	.002	194	−1.00	1.48	0.50	0.047
Body Composition
Traditional Measures
Body weight, lbs	196	0.69	0.15	<.001	199	0.71	0.19	<.001	0.95
Body mass index, kg/m2	196	4.30	0.87	<.001	199	4.60	1.08	<.001	0.82
Waist Circumference, cm	196	1.22	0.29	<.001	199	1.26	0.36	0.001	0.92
DXA Measures
Fat Mass, kg
Whole Body	181	2.00	0.49	<.001	183	2.36	0.58	<.001	0.63
Trunk	181	3.23	0.84	<.001	183	4.45	1.05	<.001	0.36
Right Leg	181	10.2	2.91	<.001	183	10.9	3.09	<.001	0.88
Left Leg	181	11.1	2.99	<.001	183	12.2	3.20	<.001	0.81
Lean Mass, kg
Whole Body	181	1.04	1.28	0.42	183	0.36	1.23	0.77	0.68
Trunk	181	1.82	2.05	0.38	183	0.55	1.98	0.78	0.64
Right Leg	181	−2.80	5.42	0.61	183	2.18	6.01	0.72	0.52
Left Leg	181	−0.54	5.64	0.92	183	−2.31	5.99	0.70	0.82

^aLTPA, body weight, BMI, waist circumference, and DXA-derived fat mass models adjusted for age at 48 month follow-up and relevant baseline value; DXA-derived lean mass models additionally adjusted for BMI at 48 month visit.

^bA square-root transformation was applied to Past Year Leisure Physical Activity. Data is back-transformed and presented as means.