Fig. 1

Average minutes of physical activity by week. The average minutes of physical activity at baseline and each week throughout the study are depicted for all study participants and for Fitbit adherent study participants. Fitbit adherence was defined as wearing the activity monitor ≥4 days per week for ≥20 weeks throughout the intervention. Baseline measures of physical activity were obtained during the two-week pre-intervention phase. The black circles show the average PA for all participants, and the light gray diamonds show the average PA for Fitbit adherent participants. The solid dark line shows the pre-intervention PA level for all participants, and the light dashed line shows the pre-intervention PA level for Fitbit adherent participants. Abbreviations: PA, physical activity