Enduring Exercise Habits
Public ClinicalTrials.gov record NCT03634423. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
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.
Study identification
- NCT ID
- NCT03634423
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Not applicable
- Enrollment
- 32,000 participants
Conditions and interventions
Conditions
Interventions
- Sweet Spot: Flexible high incentive condition Behavioral
- Sweet Spot: Flexible low incentive condition Behavioral
- Sweet Spot: Rigid high incentive condition Behavioral
- Sweet Spot: Rigid low incentive condition Behavioral
- FOTW: High incentive control condition Behavioral
- FOTW: Low incentive control condition Behavioral
- FOTW: High incentive treatment condition Behavioral
- FOTW: Low incentive treatment condition Behavioral
- Think Twice: Control condition Behavioral
- Think Twice: Treatment condition Behavioral
- WDR: Control condition Behavioral
- WDR: Treatment condition Behavioral
Behavioral
Eligibility (public fields only)
- Age range
- 18 Years to 100 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Jan 30, 2018
- Primary completion
- Feb 27, 2019
- Completion
- Feb 27, 2019
- Last update posted
- Jul 7, 2020
2018 – 2019
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| University of Pennsylvania | Philadelphia | Pennsylvania | 19104 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT03634423, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jul 7, 2020 · Synced Sep 3, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT03634423 live on ClinicalTrials.gov.