HealthDay News — Longer sleep duration and higher sleep efficiency are associated with a more favorable cardiometabolic profile in early adolescence, according to a study published online June 15 in Pediatrics.
Elizabeth M. Cespedes Feliciano, Sc.D., from Kaiser Permanente Northern California in Oakland, and colleagues used more than five days of wrist actigraphy recording for more than 10 hours per day to derive sleep duration, sleep efficiency, and moderate-to-vigorous physical activity in 829 adolescents. The authors used questionnaires to measure socioeconomic status, race and/or ethnicity, pubertal status, and obesity-related behaviors.
The researchers found that median sleep duration was 441.1 minutes per day and sleep efficiency was 84 percent. Longer sleep duration was associated with lower metabolic risk scores (for waist circumference, systolic blood pressure, high-density lipoprotein cholesterol scaled inversely, and log-transformed triglycerides and homeostatic model assessment of insulin resistance). After adjusting for body mass index z score and physical activity, television viewing, and diet quality, associations with sleep efficiency were similar and remained. Longer sleep duration and better sleep efficiency were also favorably correlated with waist circumference, systolic blood pressure, high-density lipoprotein cholesterol, and fat mass.
“These results support the need to assess the role of sleep quantity and quality interventions as strategies for improving cardiovascular risk profiles of adolescents,” the authors write.