Daily Eating Patterns for Total Health Study

Recruiting now · Not applicable

Conditions studied: Obesity

In brief

The goal of this randomized controlled trial is to learn how the time of day when calories are eaten affects weight loss in the long-term (12 months). The main aims are to learn: 1. The influence of time-based energy intake goals on longer-term weight loss. 2. The influence of time-based energy intake goals on eating temporal patterns, sleep regularity, and appetite regulation. Researchers will compare whether goals to eat most of a person's calories in the morning or evening work to treat obesity. Participants will: 1. Eat a reduced-calorie, low-fat diet (some participants will have goals to eat their calories at certain times of day based on their group) 2. Be physically active at least 200 minutes 3. Receive a cognitive behavioral intervention

Key facts

Study ID

NCT06455995

Run by

The University of Tennessee, Knoxville

People needed

174

Starts

2024-07-16

Expected to finish

2028-12-01

Last updated by the study team

2026-06-15

Who can join

Age: 25 and older, up to 60. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Body mass index (BMI) between 27 and 45 kg/m2.

You may not qualify if…

• Report not regularly (>/= 5 days/wk) consuming energy (>/= 100 kcal) prior to 12 pm, and not being able to consume energy every day (>/= 50 kcal) within one hour of awakening.
• Report taking sleep medication or not regularly (>/= 5 nights/wk) getting at least 6 hrs of total sleep.
• Report being a shift workers/alternative shift workers that work outside of 7 am and 7 pm.
• Report being diagnosed with type 1, or type 2 diabetes and taking medication that requires eating to occur at certain time periods.
• Report a heart condition, chest pain during periods of activity or rest, or loss of consciousness on the Physical Activity Readiness Questionnaire (PAR-Q). Individuals reporting joint problems, prescription medication usage, or other medical conditions that could limit exercise will be required to obtain written physician consent to participate.
• Report being unable to walk for 2 blocks (1/4 mile) without stopping.
• Report major psychiatric diseases or organic brain syndromes.
• Report currently participating in a weight loss program and/or taking weight loss or appetite regulation medication or lost >/= 5% of body weight during the past 6 months.
• Report having bariatric surgery for weight loss/planning to have bariatric surgery in the next 12 months.
• Report being pregnant, lactating, < 6 months post-partum or plan to become pregnant (next 12 months).
• Report planning to move outside of the metropolitan area within the time frame of the investigation.
• Do not have daily access to PC with internet or smartphones (needed for self-monitoring).

Where it is running

• Healthy Eating and Activity Laboratory — Knoxville, Tennessee, United States (enrolling)

Full record on ClinicalTrials.gov

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