Effects of Daily Low Oxygen Exposure on Weight Status, Body Composition, and Metabolic Health
Pennington Biomedical Research Center
Summary
The objective of the proposed double-blind, parallel-arm, randomized clinical trial is to evaluate changes in body weight and composition, assess determinants of energy balance (intake and expenditure), and measure modulators of energy balance, following 8 wk of calorie restriction (-500 kcal/d) in combination with either overnight exposure to normobaric hypoxia (8 h/night, 15% FiO2, \~2640 m) or normoxia (8 h/night, 21% FiO2), using a commercially available, in-home tent system, in adults with obesity.
Description
Obesity and associated metabolic conditions are a significant public health burden, costing the U.S. \~$150 billion annually. Obesity is both a disease, affecting 1 in 3 Americans, and a risk factor for other chronic diseases, such as cardiovascular disease, type 2 diabetes, and 13 forms of cancers. Diet and exercise are the cornerstone of obesity prevention and treatment. However, a considerable number of individuals are non-responsive to existing weight-loss interventions and obesity rates continue to rise. Therefore, non-conventional approaches are needed to supplement current weight-loss s…
Eligibility
- Age range
- 22–65 years
- Sex
- All
- Healthy volunteers
- Yes
Inclusion Criteria: * Obese (BMI between 30-39.9 kg/m2) * Born at altitudes below 2,100 meters (\~7,000 feet) * Currently residing in Tallahassee, Florida or surrounding area * Completed a full FDA authorized or approved COVID-19 vaccination series at least 14 days before any in-person human research activity. * Not taking any medication(s) that interfere with oxygen delivery/transport for 4 weeks prior to and throughout the entire study (e.g., includes sedatives, sleeping aids, tranquilizers and/or any medication that depresses ventilation, diuretics, alpha and beta blockers). * Willing to r…
Interventions
- OtherNormobaric hypoxia (NH)
Low oxygen exposure to mimic \~8500 feet elevation (experimental).
- OtherNormobaric normoxia (NN)
Normal oxygen exposure to mimic sea level conditions (sham comparator).
Location
- Pennington Biomedical Research CenterBaton Rouge, Louisiana