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.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
100
The amount of food served (g) at the first two meals of each day. These amounts will vary across 4 weeks.
Columbia University Irving Medical Center
New York, New York, United States
Food intake
Food by weight (g) in response to variations in portion served
Time frame: 24-hours intake period
Energy intake
Food by energy (kcal) in response to variations in portion served
Time frame: 24-hours intake period
Energy density consumed
Energy density consumed (kcal/g) in response to variations in portion served
Time frame: 24-hours intake period
Appetite-regulating hormones
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
Time frame: 2-hours measurement period
Hunger and fullness
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.
Time frame: 24-hours measurement period
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