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Medicineworld.org: Less sleep more pounds

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Less sleep more pounds




Adolescents who don't get enough sleep may gain more than some extra time to play video games or text their friends. They also may gain weight, as per research being presented Tuesday, May 4 at the Pediatric Academic Societies (PAS) annual meeting in Vancouver, British Columbia, Canada.

Other studies have shown a relationship between sleep and weight issues, especially in young children. However, this is one of the first studies to document an association between sleep duration and weight in adolescents, even after controlling for calorie intake, activity level and depressive symptoms.



Less sleep more pounds

In research led by Leslie A. Lytle, PhD, from the Center for Child Health, Behavior and Development at Seattle Children's Research Institute, study researchers collected data on 723 adolescents (mean age 14.7 years) about how long they slept on weeknights and weekends, and how frequently they experienced sleep problems. On three separate occasions, scientists also asked the youths about the foods and beverages they had consumed the previous day to determine how a number of calories they consumed.

To measure activity, participants wore accelerometers on their belts for seven days. Unlike pedometers, which count the number steps walked, these highly specialized devices measure movement on three different planes. In addition, the wearer cannot see any data on how active they are.

"The use of accelerometers and 24-hour (dietary) recalls was unique in the study of sleep and weight in youth and is a real strength of the study," Dr. Lytle said.

Scientists also measured participants' weight, body mass index (BMI) and percentage of body fat.

Results showed that shorter sleep duration was correlation to higher BMI. The relationship was particularly strong for boys and for middle school students in comparison to those in high school. In girls, only less sleep on weekends was correlation to higher BMI.

"Sleep has long been recognized as an important health behavior," Dr. Lytle said. "We are just beginning to recognize its relationship to overweight and obesity in children and adults alike".


Posted by: JoAnn    Source




Did you know?
Adolescents who don't get enough sleep may gain more than some extra time to play video games or text their friends. They also may gain weight, as per research being presented Tuesday, May 4 at the Pediatric Academic Societies (PAS) annual meeting in Vancouver, British Columbia, Canada.

Medicineworld.org: Less sleep more pounds

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