Could short bursts of low oxygen ease sleep apnea and boost heart health?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Male or female of any race, 30-60 years of age with a BMI of less than 40 kg/m2 and a weight to hip ratio of less than 1.3in males and 1.2 in females along with pure or predominantly (i.e., comprised of both a central and obstructive component)OSA (AHI less than or equal to 100 events per hour and an average oxygen desaturation level of 85 % or greater). * Participants will be newly diagnosed and not previously treated with CPAP. * Participants will also be diagnosed with hypertension. Participants will either be untreated or will be treated unsuccessfully with a single prescribed medication for hypertension. Hypertension will be classified according to the American Heart Association 2018 criteria which includes an elevated systolic blood pressure in the range of 120-129 and a diastolic pressure less than 80 mmHg in addition to stage I and stage II hypertension defined by a systolic blood pressure greater than 130 mmHg and a diastolic pressure greater than 80 mmHg. * Participants will also be included if they are pre-diabetic (HbA1C: 5.7 - 6.4 %; fasting blood glucose: 100 - 125 mg/dL) and have cholesterol levels ranging from 200-239 mg/dL. * All participants will have normal lung function and a normal EKG with no or minimal alcohol consumption (\< 2 oz of alcohol/night). * Females will be studied at similar points in their menstrual cycle. Exclusion Criteria: * Participants with baseline blood pressure greater than 160/110 will be excluded from participation. * Participants on any medications, with the exception of a single prescribed medication for individuals with resistant hypertension. * Participants with any other known disease (e.g. pulmonary hypertension). * Participants using any sleep promoting supplements including melatonin. * Night shift workers or participants who recently travelled across time zones. * Pregnant females.