Table 1.

Program phases, weekly goals, and maximum incentives (total US $510).

Week	Phase	Goal	Incentive if goal is met (US $)	Incentive if goal is exceeded (US $)	Incentives (US $ per week)	Total incentives paid (US $)
1	Baseline	Sync Fitbit ≥5 of 7 days to establish starting level for weekly goals	10	—a	10	10
2	Shaping	Individualized exercise goal: meet daily goal 1 day more than the prior week (maximum 5 days)	20	10	30	30
3	Shaping	If goal met, goal for next week increases by 1 day (maximum 5 days); if goal not met, new goal is to match prior week	25	10	35	35
4	Shaping	If goal met, goal for next week increases by 1 day (maximum 5 days); if goal not met, a new goal is to match prior week	30	10	40	40
5	Shaping	If goal met, goal for next week increases by 1 day (maximum 5 days); if goal not met, a new goal is to match prior week	35	10	45	45
6	Shaping	If goal met, goal for next week increases by 1 day (maximum 5 days); if goal not met, a new goal is to match prior week	40	10	50	50
7	Maintenance	≥60 minutes of exercise (or 10,000 steps), 5 days per week	40	10	50	50
8	Maintenance	≥60 minutes of exercise (or 10,000 steps), 5 days per week	40	10	50	50
9	Maintenance	≥60 minutes of exercise (or 10,000 steps), 5 days per week	40	10	50	50
10	Fading	≥60 minutes of exercise (or 10,000 steps), 5 days per week; incentives paid at the end of 3-week period	40	10	50	—
11	Fading	≥60 minutes of exercise (or 10,000 steps), 5 days per week; incentives paid at the end of 3-week period	40	10	50	—
12	Fading	≥60 minutes of exercise (or 10,000 steps), 5 days per week; incentives paid at the end of 3-week period	40	10	50	150

^aNot available (weeks in which there was no weekly goal bonus or incentives were not delivered).