Eating Behaviors in Shift Workers
Study Details
Study Description
Brief Summary
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.
Condition or Disease | Intervention/Treatment | Phase |
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N/A |
Study Design
Arms and Interventions
Arm | Intervention/Treatment |
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Active Comparator: Day worker Men and women who work only day shift for at least 3 consecutive days of the week |
Behavioral: Portion size
The amount of food served (g) at the first two meals of each day. These amounts will vary across 4 weeks.
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Active Comparator: Night worker Men and women who work only night shift for at least 3 consecutive days of the week |
Behavioral: Portion size
The amount of food served (g) at the first two meals of each day. These amounts will vary across 4 weeks.
|
Outcome Measures
Primary Outcome Measures
- Food intake [24-hours intake period]
Food by weight (g) in response to variations in portion served
- Energy intake [24-hours intake period]
Food by energy (kcal) in response to variations in portion served
- Energy density consumed [24-hours intake period]
Energy density consumed (kcal/g) in response to variations in portion served
Secondary Outcome Measures
- Appetite-regulating hormones [2-hours measurement period]
Appetite-regulating hormones, including Glucagon-like-peptide 1 (GLP-1) and ghrelin will be analyzed from plasma from whole blood samples collected while fasted and at 30, 60, 90, and 120 min postprandial. Area under the curve of plasma concentrations will be calculated for each individual appetite-regulating hormone
- Hunger and fullness [24-hours measurement period]
Subjective measures related to hunger, fullness, and prospective consumption will be measured before and after meals via visual analog scales. The range of scores are 0 mm to 100 mm, with higher scores indicating greater feelings of the corresponding measure (e.g. greater hunger). Post-meal measures, adjusted for the corresponding pre-meal measure, will be analyzed as individual outcomes. Area under the curve will also be calculated for each measure.
Eligibility Criteria
Criteria
Inclusion Criteria:
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Work ~ 8-hour shifts during day or night on 3 or more consecutive days of the week
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BMI 19-35 kg/m^2
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Age 20-55 years of age
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Metabolically healthy
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Weight stable over previous 3 months
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Lives in New York City area
Exclusion Criteria:
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Pregnant or less than 1 year postpartum at time of study
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Smoking
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History of drug or alcohol abuse
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Rotating shift work
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Habitual sleep duration of more than 6 hour per night
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Obstructive sleep apnea
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Transmeridian travel
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Type 2 diabetes
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Cardiovascular disease
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Hypertension
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Participation in diet or weight loss program in the 3 months prior to enrollment
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Psychiatric or sleep disorder
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Food allergies or intolerances
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Dislike of or unwillingness to eat test foods
Contacts and Locations
Locations
Site | City | State | Country | Postal Code | |
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1 | Columbia University Irving Medical Center | New York | New York | United States | 10032 |
Sponsors and Collaborators
- Columbia University
Investigators
- Principal Investigator: Faris M Zuraikat, PhD, Columbia University
- Principal Investigator: Marie-Pierre St-Onge, PhD, Columbia University
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- AAAS8559