About this trial
The purpose of this research study is to see if obstructive sleep apnea (OSA) is associated with abnormalities in fat metabolism. Through this research study, the Investigator will evaluate how fat is metabolized in people with and without sleep apnea, what substances the fat tissue releases, and how these substances might change the way the body uses energy and sugar.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Age between 18-70 years
Ability to provide consent
Disqualifiers
Body Mass Index (BMI) > 40 kg/m2
Prevalent myocardial infarction, coronary revascularization, heart failure, and stroke
Type 1 or Type 2 diabetes mellitus
Current or prior use of PAP or oral appliance therapy for OSA
Trial design
Parallel
Treatments tested in this trial
PAP Therapy
DeviceAuto-PAP device (ResMed AirsenseTM Autoset) with a heated humidifier will be provided along with an appropriate mask and connecting hose for nightly use
Lifestyle Counseling Intervention
BehavioralLifestyle intervention will include counseling on (a) education on nutrition and exercise; and (b) behavioral support for identifying lifestyle change strategies and problem-solving barriers to improve the regularity and duration of sleep. This will be conducted using brochures on weight loss and sleep hygiene
Treatment groups
Trial outcomes
Primary outcomes
Whole body lipolysis rate
Measured using the Intravenous Glucose Tolerance Test (IVGTT) in micromoles/L/min assessed at baseline and again at 3 months
Secondary outcomes
Free Fatty Acids (FFA) Oxidation Rate
Measured using the IVGTT in micromoles/L/min assessed at baseline and again at 3 months
Adipocyte insulin resistance
Measured using the IVGTT in micromoles-microunits/L-ml assessed at baseline and again at 3 months
Lipolysis suppression slope
Measured using the IVGTT in micromoles/L-min assessed at baseline and again at 3 months
Free fatty acid rebound slope
Measured using the IVGTT in micromoles/L-min assessed at baseline and again at 3 months
Sponsors and contacts
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University of Miami
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
Collaborator