About this trial
Many teenagers get too little and late timed sleep. High body weight and diabetes are increasing in teenagers as well. This study plans to learn more about whether improving sleep habits can help improve how the body regulates blood sugar and energy use in teenagers who have higher body weight. To answer this question, the investigators plan to enroll teenagers who get \<7 hours of sleep on school nights and measure changes in blood sugars and energy use after two weeks of typical sleep (sleeping on their normal school schedule) and two weeks of a sleep intervention that includes spending longer time in bed at night, melatonin, and morning light.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
High school students between 14-19 years
Overweight/obesity (BMI >85% for age and sex)
Have habitually insufficient sleep, defined as ≤ 7 hours per night on school days
Habitually inactive (≤ 3 h of physical activity reported per week)
Disqualifiers
Reported diagnosis of sleep disorder (e.g., insomnia, obstructive sleep apnea)
Medical comorbidities that impact sleep or insulin sensitivity (e.g., diabetes [based on history or screening HbA1c])
Regular use of medications affecting sleep or insulin sensitivity (e.g., stimulants, sleep aids, systemic steroids, insulin sensitizers, GLP-1 agonists)
IQ<70 or severe mental illness that may impact sleep or study participation (e.g., schizophrenia), eating disorder, or active suicidal ideation
Trial design
Crossover
Treatments tested in this trial
Circadian/Sleep (C/S)
Behavioral1h additional time in bed, melatonin 2h before bedtime, and 30 minutes bright light after waking
Treatment groups
Trial outcomes
Primary outcomes
Insulin sensitivity
Matsuda Index will be calculated from a mixed meal tolerance test (MMTT); higher values indicate better insulin sensitivity.
Secondary outcomes
Total daily energy expenditure (TDEE)
Assessed with doubly labeled water. Higher values indicate greater energy expenditure
Average daily caloric intake (kcal/day)
Calculated from photographic diet diaries. Higher kcal indicates greater caloric intake.
Locations
Sponsors and contacts
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University of Colorado, Denver
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Collaborator
This trial is not recruiting at the moment. You can still explore other options: