Eating Behaviors in Shift Workers

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

ACTIVE_NOT_RECRUITING

Clinical Phase

NA

Total Enrollment

100 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-12-14

Study Completion Date

2026-06-30

Brief Summary

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This study will compare eating behaviors and measures of hunger and fullness between day and night workers in order to better understand why night workers are at increased risk for obesity and related diseases.

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Detailed Description

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Conditions

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Shift Work Type Circadian Rhythm Sleep Disorder Eating Behavior

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

This is a mixed design with two participant groups (between-subject), day and night workers, each being exposed to 4 levels of food portion size (within-subjects factor)

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors

Statistician will be blinded to participant group and condition.

Study Groups

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Day worker

Men and women who work only day shift for at least 3 consecutive days of the week

Group Type ACTIVE_COMPARATOR

Portion size

Intervention Type BEHAVIORAL

The amount of food served (g) at the first two meals of each day. These amounts will vary across 4 weeks.

Night worker

Men and women who work only night shift for at least 3 consecutive days of the week

Group Type ACTIVE_COMPARATOR

Portion size

Intervention Type BEHAVIORAL

The amount of food served (g) at the first two meals of each day. These amounts will vary across 4 weeks.

Interventions

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Portion size

The amount of food served (g) at the first two meals of each day. These amounts will vary across 4 weeks.

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* Work \~ 8-hour shifts during day or night on 3 or more consecutive days of the week
* BMI 19-35 kg/m\^2
* Age 20-55 years of age
* Metabolically healthy
* Weight stable over previous 3 months
* Lives in New York City area

Exclusion Criteria

* Pregnant or less than 1 year postpartum at time of study
* Smoking
* History of drug or alcohol abuse
* Rotating shift work
* Habitual sleep duration of more than 6 hour per night
* Obstructive sleep apnea
* Transmeridian travel
* Type 2 diabetes
* Cardiovascular disease
* Hypertension
* Participation in diet or weight loss program in the 3 months prior to enrollment
* Psychiatric or sleep disorder
* Food allergies or intolerances
* Dislike of or unwillingness to eat test foods

Minimum Eligible Age

20 Years

Maximum Eligible Age

55 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes