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Enduring Exercise Habits

Enduring Exercise Habits

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03634423
Enrollment
32000
Registered
2018-08-16
Start date
2018-01-31
Completion date
2019-02-28
Last updated
2020-07-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy

Keywords

Interest in exercising more

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.

Detailed description

The four sub-studies are: 1. Sweet spot Past studies have shown that steady routines associated with stable cues are a hallmark of successful habits. However, recent research has demonstrated that incentivizing an overly rigid routine (e.g., every workout must be at the same time each day) creates a less lasting exercise habit than incentivizing a flexible exercise routine (e.g., workouts can be at any time of day). In this study, the investigators examine whether offering higher rewards for exercise that occurs at a planned, routine time than for exercise at other times, but still offering some rewards for exercise outside of these planned moments, may improve over total flexibility for producing lasting habits. 2. Falling off the Wagon (FOTW) In the long run, missing one workout won't make much difference to a person's overall health. Psychologically, however, missing a workout may lead people to feel they've already failed at meeting their fitness goals, zapping their motivation to exercise in the future. In this study, the investigators examine whether offering 50% larger incentive for exercise to people after they miss a planned workout leads to more sustained exercise habits than incentivizing all workouts equally. 3. Think Twice Studies have shown that people tend to fall into the planning fallacy -- optimistically overestimating their performance in some future activity. In this study, the investigators examine whether people who the investigators taught about the planning fallacy would make more realistic exercise plans and adhere to those plans better. 4. Weekly vs. Daily Routines (WDR) This study will examine whether incentivizing people to create a daily routine that is consistent every day for a month or a weekly routine that is consistent every week for a month helps people build a more lasting exercise habit. In the daily routines condition, participants will be required to schedule workouts (and associated text reminders) at the same time of day on every weekday, and the same time of day on each weekend throughout our four week treatment period. In the weekly routines condition, participants will be allowed to schedule workouts (and associated text reminders) at different times on different days of the week, but their schedule must be the same for each of the four weeks of our four week treatment period.

Interventions

BEHAVIORALSweet Spot: Flexible high incentive condition

Participants receive text reminders 30 minutes before their workouts and weekly emails reminding them of their schedule.

BEHAVIORALSweet Spot: Flexible low incentive condition

Participants receive text reminders 30 minutes before their workouts and weekly emails reminding them of their schedule.

BEHAVIORALSweet Spot: Rigid high incentive condition

Participants receive text reminders 30 minutes before their workouts and weekly emails reminding them of their schedule.

BEHAVIORALSweet Spot: Rigid low incentive condition

Participants receive text reminders 30 minutes before their workouts and weekly emails reminding them of their schedule.

BEHAVIORALFOTW: High incentive control condition

Participants receive text reminders 30 minutes before their workouts and weekly emails reminding them of their schedule.

BEHAVIORALFOTW: Low incentive control condition

Participants receive text reminders 30 minutes before their workouts and weekly emails reminding them of their schedule.

BEHAVIORALFOTW: High incentive treatment condition

Participants receive text reminders 30 minutes before their workouts and weekly emails reminding them of their schedule.

BEHAVIORALFOTW: Low incentive treatment condition

Participants receive text reminders 30 minutes before their workouts and weekly emails reminding them of their schedule.

BEHAVIORALThink Twice: Control condition

Participants receive text reminders 30 minutes before their workouts and weekly emails reminding them of their schedule.

BEHAVIORALThink Twice: Treatment condition

Participants receive text reminders 30 minutes before their workouts and weekly emails reminding them of their schedule.

BEHAVIORALWDR: Control condition

Participants receive text reminders 30 minutes before their workouts and weekly emails reminding them of their schedule.

BEHAVIORALWDR: Treatment condition

Participants receive text reminders 30 minutes before their workouts and weekly emails reminding them of their schedule.

Sponsors

University of Pennsylvania
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SUPPORTIVE_CARE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 100 Years
Healthy volunteers
No

Inclusion criteria

* Has 24 Hour Fitness Membership

Exclusion criteria

\-

Design outcomes

Primary

MeasureTime frame
Each participant's number of gym visits per weekDuring the 4 intervention weeks
Binary variable capturing whether or not a participant had any gym visits in a given weekDuring the 4 intervention weeks
Each participant's number of gym visits per week at scheduled workout timesDuring the 4 intervention weeks
Binary variable capturing whether or not a participant had any gym visits in a given week at scheduled workout timesDuring the 4 intervention weeks
Each participant's number of gym visits per week outside of scheduled workout timesDuring the 4 intervention weeks
Binary variable capturing whether or not a participant had any gym visits in a given week outside of scheduled workout timesDuring the 4 intervention weeks

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026