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Effects of Early and Delayed Time-restricted Eating in Adults With Overweight and Obesity

NCT ID: NCT04647149

Last Updated: 2020-11-30

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

48 participants

Study Classification

INTERVENTIONAL

Study Start Date

2019-09-03

Study Completion Date

2020-05-12

Brief Summary

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Time-restricted eating (TRE) is a dietary approach that aims to increase fasting time and decrease the eating window. Promising TRE effects on weight loss and some cardiometabolic risk factors have been reported. However, there is a lack of randomized clinical trials that directly investigate the effect of TRE at different times of the day (early vs. delayed) in individuals with overweight and obesity. The present study investigates the effects of 8 weeks of TRE performed at different moments of the day on body composition and cardiometabolic parameters in adults with overweight and obesity.

Detailed Description

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Conditions

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Time Restricted Feeding Intermittent Fasting Obesity Overweight and Obesity

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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Early Time-Restricted Eating

8-hour eating window between 08:00 and 16:00

Group Type EXPERIMENTAL

Dietary Approach

Intervention Type BEHAVIORAL

Dietary approaches with energy restriction performed at different times of the day.

Delayed Time-Restricted Eating

8-hour eating window between 12:00 and 20:00

Group Type EXPERIMENTAL

Dietary Approach

Intervention Type BEHAVIORAL

Dietary approaches with energy restriction performed at different times of the day.

Control

12-hour eating window between 08:00 and 20:00

Group Type EXPERIMENTAL

Dietary Approach

Intervention Type BEHAVIORAL

Dietary approaches with energy restriction performed at different times of the day.

Interventions

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Dietary Approach

Dietary approaches with energy restriction performed at different times of the day.

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* Male and female;
* Body mass index (BMI) between 25 and 34.9 kg/m²;
* Age between 20 and 40 years;
* Not engaged in any structured exercise program;
* Weight stable for \~3 months prior to the beginning of the study;
* Able to give written informed consent.

Exclusion Criteria

* Current smoker;
* Cardiometabolic diseases (dyslipidemia, diabetes, hypertension, etc);
* Current treatment with medication or supplements which significantly affect the main studied variables;
* Night-shift workers;
* Night eating syndrome;
* Irregular sleep patterns;
* For women: pregnancy, planned pregnancy (within the study period), lactating or menopause;
* Habitual fasting window \>16 hours;
* Concomitant participation in other studies.
Minimum Eligible Age

20 Years

Maximum Eligible Age

40 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Federal University of Rio Grande do Sul

OTHER

Sponsor Role lead

Responsible Party

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Alvaro Reischak-Oliveira

Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Alvaro Reischak-Oliveira

Role: PRINCIPAL_INVESTIGATOR

Federal University of Rio Grande do Sul

Locations

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Universidade Federal do Rio Grande do Sul

Porto Alegre, Rio Grande do Sul, Brazil

Site Status

Countries

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Brazil

Other Identifiers

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TRE_UFRGS#

Identifier Type: -

Identifier Source: org_study_id