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Evaluating Metabolic Health in Individuals With Extreme Obesity
Sponsor: Pennington Biomedical Research Center
Summary
This research will evaluate energy metabolism (expenditure and fat oxidation), metabolic flexibility (response to a high-fat test meal) in 10 individuals with a BMI ≥60 kgm2 using gold-standard assessments of energy metabolism, metabolic flexibility, and body composition. Males and females (18-80 y) with extreme obesity (BMI: ≥60 kg/m2) will be recruited from Baton Rouge, Louisiana. Exclusion criteria include major organ failure, uncontrolled endocrine disease, severe psychiatric illness, pregnancy, and inability to comply with study procedures. The total duration of participation for each individual is estimated at approximately 10 days. If qualified, participants (BMI≥60 kg/m2; n=10) will complete one outpatient visit and one inpatient visit with 36hr metabolic chamber testing.
Official title: Evaluating Energy Metabolism and Metabolic Health in Individuals With Extreme Obesity
Key Details
Gender
All
Age Range
18 Years - 80 Years
Study Type
OBSERVATIONAL
Enrollment
10
Start Date
2026-07-01
Completion Date
2026-08-01
Last Updated
2026-05-29
Healthy Volunteers
Yes
Conditions
Interventions
High-fat test meal
At Visit 2-D1, subjects will enter the chamber at approximately 17:30 and exit the following morning at 07:00. Energy expenditure, respiratory exchange ratio (RER), and 12-h oxidation of CHO, fat, and protein will be calculated per standard PBRC protocols. While in the chamber, participants will collect all their urine for measurement of urinary nitrogen. Subjects will be served one high-fat meal while they are in the chamber (40% of the daily energy requirements).