Jornal de Distúrbios do Sono e Terapia
Acesso livre

Abstrato

Later Bedtime is Associated with Greater Daily Energy Intake and Screen Time in Obese Adolescents Independent of Sleep Duration

Kristi B Adamo, Shanna Wilson, Kevin Belanger and Jean-Philippe Chaput

Objective: To examine if sleep timing (combination of bedtime and wake up time) is associated with energy intake and physical activity/sedentary behaviour in obese adolescents.

Methods: Participants included in this cross-sectional examination were 26 (13 females) obese volunteers (BMI ≥ 95^th percentile) with a mean age of 13.6 ± 0.5 years and valid data on self-reported sleep, food intake (dietary record), physical activity and sedentary time (accelerometer), screen time (self-reported), and anthropometry (BMI). We categorized participants as “late sleepers” (midpoint of sleep >3:30 a.m., n=13) and participants as “normal sleepers” (midpoint of sleep ≤ 2:30 a.m., n=13).

Results: As expected, wake-up time and bedtime were different between sleep timing groups (p