Project Step: A Randomized Controlled Trial Investigating the Effects of Frequent Feedback and Contingent Incentives...

Area of Science:

• Behavioral Science
• Health Interventions
• Exercise Physiology

Background:

• Physical activity interventions often use financial incentives and behavioral feedback.
• Evidence for the independent effects of these techniques is limited.
• This study investigates the combined impact of feedback frequency and incentive contingency.

Purpose of the Study:

• To evaluate the efficacy of daily versus weekly feedback on physical activity.
• To compare the effects of contingent versus noncontingent financial incentives.
• To explore potential interactions between feedback and incentives in promoting walking behavior.

Main Methods:

• A 2x2 factorial trial was conducted with 57 insufficiently active participants (BMI >25 kg/m2).
• Participants received a daily walking goal that was adjusted weekly.
• Interventions involved variations in feedback frequency (daily/weekly) and incentive contingency.

Main Results:

• Daily feedback led to a significant increase in daily steps compared to weekly feedback (P = .03).
• Contingent incentives did not significantly increase steps more than noncontingent incentives (P = .12).
• A trend suggested that daily feedback combined with contingent incentives may be most effective (P = .09).

Conclusions:

• Feedback is a key component in remotely delivered physical activity interventions.
• Further research into synergistic effects of feedback and rewards is needed to optimize interventions.
• Evaluating individual components of low-intensity interventions can enhance their efficacy.