TABLE 4.

Physical activity levels over time (N = 71)

Characteristic	Baseline	Week 4	Week 8	Week 12	1 y	P value
Steps/d	6556 ± 285	6548 ± 286	6627 ± 287	7156 ± 295	7519 ± 340*	0.006
Sedentary time, min/d	1184 ± 19	1177 ± 19	1071 ± 19***	1130 ± 20	1127 ± 24	<0.001
Light PA, min/d	188 ± 7	202 ± 8	221 ± 7***	227 ± 8***	229 ± 9***	<0.001
Moderate PA, min/d	55 ± 5	46 ± 5	54 ± 5	60 ± 5	59 ± 6	0.013
Vigorous to very vigorous PA, min/d	0.9 ± 0.4	0.5 ± 0.4	1.0 ± 0.4	1.8 ± 0.4	2.7 ± 0.5*	0.001
Total PA, min/d	244 ± 10	249 ± 10	276 ± 10**	289 ± 10***	290 ± 11***	0.001

Data presented as means ± SEMs. Changes over time assessed with linear mixed model, followed by post hoc comparisons between time points with Bonferroni adjustment. Asterisks denote significant differences from baseline: *P < 0.05 and ***P < 0.001. PA, physical activity.