Spark: Finding the Optimal Tracking Strategy for Weight Loss in a Digital Health Intervention

"All participants will receive a 6-month core behavioral obesity treatment consisting of goal setting, behavioral lessons, action plans, and tailored feedback - all of which will be delivered remotely."

Participants randomized to receive this component will be instructed to self-monitor their dietary intake daily via the Fitbit mobile app. Participants will receive a daily calorie goal.

Participants randomized to receive this component will be instructed to self-monitor their body weight daily via a wireless e-scale (e.g., the Fitbit Aria Scale).

Participants randomized to receive this component will be instructed to self-monitor their step count daily via a wrist-worn Fitbit activity monitor. A daily step goal will be given that will adapt based on progress.