Brief Summary

The objective of this study is to test whether the interventions offering short-term incentives (points redeemable for prizes), specific cued plans, and science-backed tips can help with creating enduring exercise habits. There are four (4) sub-studies within this protocol.

Trial Health

On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment

32,000

participants targeted

Target at P75+ for not_applicable healthy

Timeline

Completed

Started Jan 2018

Typical duration for not_applicable healthy

Geographic Reach

1 country

1 active site

Status

completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

1.1 years study duration

Study Start

First participant enrolled

January 31, 2018

Completed

4 months until next milestone

First Submitted

Initial submission to the registry

June 12, 2018

Completed

2 months until next milestone

First Posted

Study publicly available on registry

August 16, 2018

Completed

7 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

February 28, 2019

Completed

Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

February 28, 2019

Completed

Last Updated

July 8, 2020

Status Verified

July 1, 2020

Enrollment Period

1.1 years

First QC Date

June 12, 2018

Last Update Submit

July 7, 2020

Conditions

Healthy

Keywords

Interest in exercising more

Outcome Measures

Primary Outcomes (24)

Each participant's number of gym visits per week
During the 4 intervention weeks
Each participant's number of gym visits per week
During the 4 weeks post-intervention
Each participant's number of gym visits per week
During the 10 weeks post-intervention
Each participant's number of gym visits per week
During the 52 weeks post-intervention
Binary variable capturing whether or not a participant had any gym visits in a given week
During the 4 intervention weeks
Binary variable capturing whether or not a participant had any gym visits in a given week
During the 4 weeks post-intervention
Binary variable capturing whether or not a participant had any gym visits in a given week
During the 10 weeks post-intervention
Binary variable capturing whether or not a participant had any gym visits in a given week
During the 52 weeks post-intervention
Each participant's number of gym visits per week at scheduled workout times
During the 4 intervention weeks
Each participant's number of gym visits per week at scheduled workout times
During the 4 weeks post-intervention
Each participant's number of gym visits per week at scheduled workout times
During the 10 weeks post-intervention
Each participant's number of gym visits per week at scheduled workout times
During the 52 weeks post-intervention
Binary variable capturing whether or not a participant had any gym visits in a given week at scheduled workout times
During the 4 intervention weeks
Binary variable capturing whether or not a participant had any gym visits in a given week at scheduled workout times
During the 4 weeks post-intervention
Binary variable capturing whether or not a participant had any gym visits in a given week at scheduled workout times
During the 10 weeks post-intervention
Binary variable capturing whether or not a participant had any gym visits in a given week at scheduled workout times
During the 52 weeks post-intervention
Each participant's number of gym visits per week outside of scheduled workout times
During the 4 intervention weeks
Each participant's number of gym visits per week outside of scheduled workout times
During the 4 weeks post-intervention
Each participant's number of gym visits per week outside of scheduled workout times
During the 10 weeks post-intervention
Each participant's number of gym visits per week outside of scheduled workout times
During the 52 weeks post-intervention
Binary variable capturing whether or not a participant had any gym visits in a given week outside of scheduled workout times
During the 4 intervention weeks
Binary variable capturing whether or not a participant had any gym visits in a given week outside of scheduled workout times
During the 4 weeks post-intervention
Binary variable capturing whether or not a participant had any gym visits in a given week outside of scheduled workout times
During the 10 weeks post-intervention
Binary variable capturing whether or not a participant had any gym visits in a given week outside of scheduled workout times
During the 52 weeks post-intervention

Study Arms (12)

Sweet Spot: Flexible high incentive condition

EXPERIMENTAL

Participants will receive 500 points if they make a gym visit within a pre-specified window of time and 490 points if they make a gym visit at any other time. 7000 points convert to $25

Behavioral: Sweet Spot: Flexible high incentive condition

Sweet Spot: Flexible low incentive condition

EXPERIMENTAL

Participants will receive 300 points if they make a gym visit within a pre-specified window of time and 290 points if they make a gym visit at any other time. 7000 points convert to $25

Behavioral: Sweet Spot: Flexible low incentive condition

Sweet Spot: Rigid high incentive condition

EXPERIMENTAL

Participants will receive 500 points if they make a gym visit within a pre-specified window of time and 250 points if they make a gym visit at any other time. 7000 points convert to $25

Behavioral: Sweet Spot: Rigid high incentive condition

Sweet Spot: Rigid low incentive condition

EXPERIMENTAL

Participants will receive 300 points if they make a gym visit within a pre-specified window of time and 150 points if they make a gym visit at any other time. 7000 points convert to $25

Behavioral: Sweet Spot: Rigid low incentive condition

FOTW: High incentive control condition

EXPERIMENTAL

Participants will receive 750 points if they make a gym visit within a pre-specified window of time and 250 points if they make a gym visit at any other time. 7000 points convert to $5

Behavioral: FOTW: High incentive control condition

FOTW: Low incentive control condition

EXPERIMENTAL

Participants will receive 450 points if they make a gym visit within a pre-specified window of time and 150 points if they make a gym visit at any other time. 7000 points convert to $5

Behavioral: FOTW: Low incentive control condition

FOTW: High incentive treatment condition

EXPERIMENTAL

Participants will receive 500 points if they make a gym visit within a pre-specified window of time and 250 points if they make a gym visit at any other time. Additionally, if a participant misses a scheduled gym visit, they will receive 750 points the next time they visit the gym within the pre-specified window. 7000 points convert to $5

Behavioral: FOTW: High incentive treatment condition

FOTW: Low incentive treatment condition

EXPERIMENTAL

Participants will receive 300 points if they make a gym visit within a pre-specified window of time and 150 points if they make a gym visit at any other time. Additionally, if a participant misses a scheduled gym visit, they will receive 450 points the next time they visit the gym within the pre-specified window. 7000 points convert to $5

Behavioral: FOTW: Low incentive treatment condition

Think Twice: Control condition

EXPERIMENTAL

Participants get 300 points per gym visit. 7000 points convert to $5

Behavioral: Think Twice: Control condition

Think Twice: Treatment condition

EXPERIMENTAL

Participants get 300 points per gym visit and are taught about the planning fallacy. 7000 points convert to $5

Behavioral: Think Twice: Treatment condition

WDR: Control condition

EXPERIMENTAL

Participants get 300 points per gym visit and are allowed to vary their gym schedules in different days. 7000 points convert to $5

Behavioral: WDR: Control condition

WDR: Treatment condition

EXPERIMENTAL

Participants get 300 points per gym visit. Participants are required to select a single exercise time for the weekdays (Monday - Friday) and a single exercise time for the weekends (Saturday - Sunday). 7000 points convert to $5

Behavioral: WDR: Treatment condition