NCT03840733Enrolling by invitation
Linking Temporal Patterns of Modifiable Behaviors to Weight Loss Outcomes
Source: ClinicalTrials.gov · Last updated 19 Dec 2025
Brief summary (registry, in English)
This study is designed as an observational trial. The objective of this study is to follow-up with participants 3 years after completion of an 18-month comprehensive behavioral weight loss intervention. Outcomes of interest include change in body weight, body composition, physical activity, energy intake, and sleep. In addition, investigators will explore the associations between current physical activity, sleep, and energy intake patterns and body weight regulation.
- Status (registry)
- Enrolling by invitation
- Study type
- Observational
- Enrollment
- 60 (estimated)
- First submitted
- 29 Jan 2019
- Start date
- 7 Jan 2019
- Primary completion date
- Jan 2026
- Lead sponsor
- University of Colorado, Denver
- Diseases
- Obesity
- NCT number
- NCT03840733
What you commit to
- Study type: Observational
- Planned participants: 60
- From 7 Jan 2019 to the primary completion date, Jan 2026
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Current use or use within the last 6 months of prescription or over-the-counter medications known to affect appetite, weight, and sleep
Other illness
- New diagnosis of a medical condition (not observed in the Parent Trial) which may affect weight or energy metabolism (e.g. depression, CVD, diabetes, uncontrolled hypertension, untreated thyroid, renal, hepatic diseases)
Other
- Being considered unsafe to participate as determined by the study physician (Dr. Catennaci)
- Women who became pregnant after completing the Parent Trial
Who the study is looking for
- Previous enrollment in standard behavioral weight loss intervention (NCT01985568 or NCT03411356)
- Age 20-60 (This age range has been selected based upon the participants enrolled in the Parent Trial)
- Capable and willing to give informed consent
- Possess a smartphone to install and utilize the meal timing application
- Capable and willing to wear the Actigraph, ActivPAL and Actiwatch-2 for 24 hours/day for 28 consecutive days
- Willing to complete the Total Daily Energy Expenditure (TDEE) assessment which includes multiple urine collections and drinking stable water isotopes
Age in the registry: 18 years to 60 years · Sex: All · Does not accept healthy volunteers
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| University of Colorado Anschutz Medical Campus Coordinator of this site? Confirm its status | Aurora | United States | Unknown status |
This page is information, not medical advice. Discuss any trial with your doctor.