Objectively-assessed physical activity and weight change in young adults: a randomized controlled trial

Table 1 Physical activity over time stratified by treatment arm

		Assessment Periods				p-values
	Treatment Group	Baseline Mean ± Std dev Median (IQR)	BL – 4 mo change^a	BL – 1 year change^a	BL – 2 year change^a	Treatment Group	Time	Treatment Group x Time
Daily Steps	Control	8866 ± 3146 8267 (6674, 10,872)	342 (−42, 727)	−135 (−537, 268)	−179 (−635, 277)	0.7434	0.0118*	0.2976
	Small Change	8450 ± 2997 8032 (6337, 9933)	139 (−253, 531)	221 (−198, 641)	−71 (−534, 392)
	Large Change	8622 ± 3051 8383 (6366, 10,513)	260 (−138, 658)	−258 (−668, 153)	−205 (−668, 259)
Bout-related MVPA (min/week)	Control	260.4 ± 254.7 177.6 (88.0, 352.3)	54.5 (20.1, 89.0)	12.2 (−26.4, 50.8)	20.8 (−26.7, 68.3)	0.6604	0.0442*	0.1569
	Small Change	253.4 ± 246.6 180.0 (85.8, 329.0)	37.8 (2.8, 72.8)	43.9 (3.8, 84.1)	24.0 (−23.8, 71.8)
	Large Change	276.5 ± 237.8 211.4 (84.0, 400.0)	66.5 (30.8, 102.1)	11.2 (−28.0, 50.4)	63.6 (15.4111.7)
Weight (kg)	Control	71.4 ± 10.2 70.7 (63.6, 78.1)	−0.8 (−1.2, −0.3)	−0.4 (−1.0, 0.3)	0.7 (0.0, 1.4)	<0.0001**	<0.0001**	0.0160*
	Small Change	71.9 ± 11.0 70.0 (63.6, 79.5)	−1.6 (−2.0, −1.1)	−1.4 (−2.0,-0.7)	−1.0 (−1.8, −0.3)
	Large Change	70.8 ± 11.0 69.2 (63.4, 76.4)	−3.5 (−3.9, −3.0)	−2.5 (−3.1, −1.9)	−1.6 (−2.3, −0.8)

^aLeast Square Means (95% confidence interval); Steps and MVPA models adjust for clinic, gender, race, armband wear time, and baseline value of outcome measure. Weight model adjusts for clinic, gender, race, and baseline weight. Adjusted change values are presented. Boldface indicates statistical significance (*p < 0.05, **p < 0.001)