# Enduring Exercise Habits

> **NCT03634423** · NA · COMPLETED · sponsor: **University of Pennsylvania** · enrollment: 32000 (actual)

## Conditions studied

- Healthy

## Interventions

- **BEHAVIORAL:** 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

## Key facts

- **NCT ID:** NCT03634423
- **Lead sponsor:** University of Pennsylvania
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2018-01-31
- **Primary completion:** 2019-02-28
- **Final completion:** 2019-02-28
- **Target enrollment:** 32000 (ACTUAL)
- **Last updated:** 2020-07-08


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03634423

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03634423, "Enduring Exercise Habits". Retrieved via AI Analytics 2026-07-02 from https://api.ai-analytics.org/clinical/NCT03634423. Licensed CC0.

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