To examine response to a glucagon-like peptide-1 analogue vs. placebo in patients with obesity and assess impact on craving, hunger, stress, and weight outcomes.
A randomized, double-blind, placebo-controlled 12-week study with GLP-1 analogue (semaglutide) in men and women with obesity (BMI 30-49.9 kg/m2) in a validated laboratory model to identifying processes underlying greater food craving, intake and weight change, in order to test mechanisms by which a GLP-1 analogues may exerts significant weight effects in obesity.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
QUADRUPLE
Enrollment
96
GLP-1 analogue - semaglutide - administered once weekly for a total of 12 weeks
Placebo - administered once weekly for a total of 12 weeks
The Yale Stress Center: Yale University
New Haven, Connecticut, United States
Change in Craving Score
Change in craving score will be measured using a validated and revised questionnaire called Food Craving Inventory (FCI-R). FCI-R is an 28-item questionnaire that measures how often participants experienced specific food cravings for each of 28 different food types. Participants can respond to each item from "not at all" (score=1) to "more than ever" (score=5), with total FCI-R score range of 28-140. Higher mean scores indicate greater average food craving. A negative change indicates a decrease in craving with treatment.
Time frame: Average change in avg FCI craving score from week 0 to end of treatment (week 12) computed as avg FCI score at week 12 - avg FCI score at Week 0.
Change in Hunger Score
Hunger will be measured in a Visual Analog Scale (VAS) range from 0 to 10. Higher VAS indicates greater hunger. Negative change in score indicates less hunger with treatment.
Time frame: Average change in hunger VAS rating from week 0 and end of study week 12 (week 12 VAS - Week 0 VAS)
Change in Food Intake
Food intake will be measured in total calorie energy density during a validated observed laboratory task called the Food Snack Test (FST).Negative change indicates a lower food intake with treatment.
Time frame: Change in FST total calorie energy density (totalcalED)from FST at week 0 and FST during treatment at week 12 (week 12 FST - Week 0 FST totalcalED change)
Change in Food Intake - Real-World
Food intake will be measured in Kcalories using 3-day 24hr recall (ASA24). A negative change indicates lower food intake with treatment.
Time frame: Average change from baseline to end of treatment (Kcalories at week 12 - week 0)
Change in Stress Score
Stress, measured as total summed score on the 14-item Perceived Stress Scale, with higher scores indicating greater subjective stress. A negative change indicates lower stress with treatment. The Perceived Stress Scale (PSS)-14 has a total score range of 0 to 56, with individual items scored from 0 ("Never") to 4 ("Very often") and positively worded items reverse-scored before summing.
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Time frame: Average change in stress score from week 0 to end of treatment week 12 (Week 12 - Week 0)