Time Restricted Eating for Weight Loss Maintenance (TWIST)

July 6, 2026 updated by: NYU Langone Health

Time Restricted Eating for Weight Loss Maintenance (TWIST): A Single-Site, Pilot Feasibility and Acceptability Randomized Clinical Trial in Adults With Recent Weight Loss

The aim of this pilot feasibility and acceptability, randomized clinical trial will be to examine the effects of two-time restricted eating (TRE) interventions on weight loss maintenance (WLM). This study will be conducted in 40 individuals with non-surgical weight loss of ≥5% initial body weight recruited from the NYU Langone Health Weight Management Program and NY-MOVE! Weight Management Clinic at the Manhattan VA. Measurements will occur at baseline, 4 and 12 weeks. Participants will be randomized with equal allocation to 2 groups: (1) TRE6 or (2) TRE10. The TRE6 will restrict their eating window to 6 hours per day and the TRE10 to 10 hours per day.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
29

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • New York
      • New York, New York, United States, 10016
        • NYU Langone Health

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

25 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • ≥5% non-surgical weight loss from NYULH-WMP and NY-MOVE! Endocrinology Weight Management Clinic in the last 3 months
  • BMI between 20.5 - 45 m/kg2
  • between the ages 25 to 65 years old
  • own a smartphone or willing to use a smartphone if provided for self-monitoring
  • Eating window >12 h per day
  • <150 mins/wk of physical activity
  • log at least 2 meals into the smartphone app on ≥5 days

Exclusion Criteria:

  • <25 years or >65 years of age
  • Body weight in excess of 400lbs (181.4kg)
  • pregnant, trying to get pregnant or breastfeeding
  • previous or planned bariatric surgery
  • previous or current history of eating disorder
  • ongoing participation in another weight-management research study
  • continued participation in a weight loss program other than the proposed study
  • currently on appetite suppressants
  • currently following intermittent fasting or skipping meals
  • eating window <11h 59min/day
  • perform overnight shift work more than once a week
  • work that includes travel across one or more time zones
  • currently on anti-obesity medications (AOMs) such as, GLP-1 analogues (exenatide, tirzepatide, semaglutide, liraglutide) and pancreatic lipase inhibitors (Orlistat/Xenical and Alli)
  • prescribed medications expected to result in weight loss such as Orlistat, Naltrexone, Bupropion, Lorcaserin, Phentermine, Topiramate, or Liraglutide, and who are unwilling to delay treatment with these medications for the next 3 months
  • unable or unwilling to provide informed consent
  • unable to participate meaningfully in the intervention (e.g., uncorrected sight and hearing impairment)
  • unwilling to accept randomization assignment
  • unable to log at least 2 meals into the smartphone app on ≥5 d during the screening period
  • have type 1 or other conditions that would preclude restricted eating windows
  • have type 2 diabetes with a HbA1c >7.0% on medications except for metformin alone
  • narcolepsy
  • active cancer
  • organ dysfunction
  • current steroid use
  • daytime sleepiness with the Epworth Sleepiness Scale >10
  • severe insomnia with a score ≥15 on the Insomnia Severity Index
  • >2.5 kg additional weight loss during run-in phase (weight regain is not an exclusion criteria)

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Time-Restricted Eating - 6 Hours (TRE6)
Participants will be instructed to consume all daily food and beverages during their allotted 6-hour time period.
Behavioral: Time Restricted Eating (TRE)
TRE involves only consuming food and beverages during a particular consecutive time period - in the case of this study, either 6 hours or 10 hours. Participants will self-select the timing of their first eating occasion of the day, with the provision that their first meal of the day will be consumed within 3 hours of their wake- up time and finished no less than 3 hours prior to bed time. During the fasting period, participants will be encouraged to drink water, and will be permitted to consume zero-calorie beverages. Participants will be instructed to self-monitor all eating occasions using the MyCircadianClock (mCC) smartphone app, which date- and time-stamps all food entries. Participants will also be instructed to self-monitor their body weight daily using a Bluetooth-enabled Renpho scale, which permits remote collection of body weight.
Experimental: Time-Restricted Eating - 10 Hours (TRE10)
Participants will be instructed to consume all daily food and beverages during their allotted 10-hour time period.
Behavioral: Time Restricted Eating (TRE)
TRE involves only consuming food and beverages during a particular consecutive time period - in the case of this study, either 6 hours or 10 hours. Participants will self-select the timing of their first eating occasion of the day, with the provision that their first meal of the day will be consumed within 3 hours of their wake- up time and finished no less than 3 hours prior to bed time. During the fasting period, participants will be encouraged to drink water, and will be permitted to consume zero-calorie beverages. Participants will be instructed to self-monitor all eating occasions using the MyCircadianClock (mCC) smartphone app, which date- and time-stamps all food entries. Participants will also be instructed to self-monitor their body weight daily using a Bluetooth-enabled Renpho scale, which permits remote collection of body weight.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Retention Rate
Time Frame: Up to Week 12
Percentage of participants who complete all study visits. Measure of feasibility.
Up to Week 12
Recruitment Rate
Time Frame: Up to Week 12
Number of individuals who must be approached to enroll one participant in the study. A recruitment funnel will be developed by documenting the total number of eligible patients completing the NYU Langone Health-WMP and NY- MOVE! programs losing ≥5% of their baseline body weight.
Up to Week 12
Adherence Rate
Time Frame: Up to Week 12
Using data from participant-worn ActiGraphs and on eating patterns, a day will be labeled "adherent" if all eating occasions (food or beverage with caloric value) are measured inside (± 30 minutes) their prescribed eating window. Adherence rate will be calculated by dividing the total number of adherent days by the total number of days with a logged eating occasion.
Up to Week 12
Change in TRE Experience Questionnaire (TRE-EQ) Score
Time Frame: Week 4, Week 12
Online questionnaire that includes 5-point scaled items (0=strongly disagree, 5=strongly agree) regarding difficulties encountered with hunger and appetite; eating within the assigned window; coordinating the TRE window with work, school and home demands; and accommodating social connections (e.g., behaviors and preferences of fellow diners). The total score is the average of responses and ranges from 0-5; higher scores indicate greater difficulties.
Week 4, Week 12

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Change From Baseline in Lean Mass
Time Frame: Baseline, Week 12
Measured using Bioelectrical Impedance Analysis (BIA). Expressed in kilograms.
Baseline, Week 12
Change From Baseline in Fat Mass
Time Frame: Baseline, Week 12
Measured using BIA. Expressed in kilograms.
Baseline, Week 12

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
NYU Langone Health

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
National Heart, Lung, and Blood Institute (NHLBI)

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Mary A. Sevick, ScD, NYU Langone Health

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
July 17, 2023

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
January 6, 2025

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
January 6, 2025

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
February 15, 2023

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 15, 2023

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
February 23, 2023

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
July 31, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 6, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
July 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 22-01453
  • K99HL163474 (U.S. NIH Grant/Contract)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

The de-identified participant data from the final research dataset used in the published manuscript will be shared upon reasonable request beginning 9 months and ending 36 months following article publication or as required by a condition of awards and agreements supporting the research provided the investigator who proposes to use the data executes a data use agreement with NYU Langone Health. Requests may be directed to: [collin.popp@nyulangone.org]. The protocol and statistical analysis plan will be made available on Clinicaltrials.gov only as required by federal regulation or as a condition of awards and agreements supporting the research.

IPD Sharing Time Frame

Beginning 9 months and ending 36 months following article publication or as required by a condition of awards and agreements supporting the research.

IPD Sharing Access Criteria

The investigator who proposed to use the data will be granted access upon reasonable request. Requests should be directed to collin.popp@nyulangone.org. To gain access, data requestors will need to sign a data access agreement.

IPD Sharing Supporting Information Type

  • STUDY_PROTOCOL
  • SAP

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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