STEP Together: An Effectiveness-Implementation Study of Social Incentives and Physical Activity

Summary

Higher levels of physical activity have been demonstrated to improve health across a wide range of contexts and reduce cognitive decline as adults become older, but more than half of all adults in the United States do not meet their physical activity goals. One type of physical activity that is broadly applicable to people of all ages is walking. This study will use a Hybrid Type 1 effectiveness-implementation design to adapt and test the effectiveness of two successful social incentive-based interventions, a gamification strategy and financial incentives donated to charity on the participants behalf, to increase physical activity among low-income, mostly minority families in community settings.

Conditions

• Physical Activity

Interventions

BEHAVIORAL

Social Incentive Gamification

Participants enroll as a family team. They are asked to use a Fitbit activity tracker daily. Each participant sets a daily step goal based on their baseline step count. Each participant signs a pre-commitment contract. Participants are entered into a game with their family members. Each family receives 70 points weekly. Each day, a family member is selected at random to represent the family. If that person's step goal was achieved, the family keeps its points; if not, they lose 10 points. The participant is notified the following day if they were the family rep. At the end of the week, if the family has 40 points or more, they advance 1 level. If they have less than 40 points, the family drops down 1 level. Each family team starts in the middle of 5 levels. At the end of the intervention, families in the top 2 levels receive a small gift. In the 6 month follow-up, participants receive a daily text message stating whether or not they achieved their step goal on the prior day.

BEHAVIORAL

Social Goals through Incentives to Charity

Participants enroll as a family team. They are asked to use a Fitbit activity tracker daily. Each participant sets a daily step goal based on their baseline step count. Families select a charity at the beginning of the intervention. They are informed that $20 is available each week to be donated to a charity of their choice. Each day, a family member is selected at random to represent the family. If that person's step goal was achieved, the family gets credit for meeting their goal; if not, the entire family does not get credit. The participant is notified the following day if they were the family rep. If the family achieves their goal on at least 4 of 7 days in a week, $20 is donated to charity. In the 6 month follow-up, participants receive a daily text message stating whether or not they achieved their step goal on the prior day.

BEHAVIORAL

Daily Performance Feedback

Participants enroll as a family team. They are asked to use a Fitbit activity tracker daily. Each participant sets a daily step goal based on their baseline step count. Participants receive a daily text message stating whether or not they achieved their step goal on the prior day.

Sponsors & Collaborators

• National Heart, Lung, and Blood Institute (NHLBI)

  collaborator NIH

• Abramson Cancer Center at Penn Medicine

  lead OTHER

Principal Investigators

• Karen Glanz, PhD, MPH · University of Pennsylvania

Study Design

Allocation

RANDOMIZED

Purpose

PREVENTION

Masking

SINGLE

Model

PARALLEL

Eligibility

Min Age

14 Years

Sex

ALL

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2021-09-21

Primary Completion

2025-04-04

Completion

2025-10-11

Countries

• United States

Study Locations