Trial Parameters
Brief Summary
The goal of this clinical trial is to test the impact of repeated intermittent short sleep, with short sleep maintained 5 days per week followed by 2 days of prolonged sleep, compared to daily adequate sleep, on energy balance and cardiometabolic risk. A secondary goal of this research is to determine if maintaining a constant midpoint of sleep while undergoing intermittent short sleep, leads to better outcomes than intermittent short sleep with a 2-hour delay in sleep midpoint. The aims of this research will be tested in the context of a 3-group, parallel-arm, outpatient intervention of 4 weeks in duration, in young-to-middle-aged adults (aged 18-49 years).
Eligibility Criteria
Inclusion Criteria: * Aged 18 to 49 years * BMI 20-29.9 kg/m2 * Habitually sleeping 7-9 hours/night without sleep aids or naps Exclusion Criteria: * Sleep disorders * Psychiatric disorders (including eating disorders) and seasonal affective disorder * Pregnancy (current/prior year) * Breastfeeding * Smokers (Any cigarette smoking or ex-smokers \<3years) * Diabetes * Elevated blood pressure, taking beta-blockers * Individuals taking anti-coagulants or anti-platelets * Recent weight change or participation in a weight loss program or have ever had bariatric surgery or other weight loss or gastrointestinal procedure. * Travel across time zones; shift work (non-traditional hours)