Navigation Links
Penn study finds increased sleep could reduce rate of adolescent obesity
Date:4/8/2013

Philadelphia Increasing the number of hours of sleep adolescents get each night may reduce the prevalence of adolescent obesity, according to a new study by researchers from the Perelman School of Medicine at the University of Pennsylvania. Results of the study show that fewer hours of sleep is associated with greater increases in adolescent body mass index (BMI) for participants between 14 and 18-years-old. The findings suggest that increasing sleep duration to 10 hours per day, especially for those in the upper half of the BMI distribution, could help to reduce the prevalence of adolescent obesity. Full results of the study are available online in the latest issue of Pediatrics.

Previous studies have shown that a correlation exists between short sleep and obesity, but until now few have been able to rule out other variables such as time spent watching television and being physically active. The new study observed over 1,000 Philadelphia-area high school students from their freshmen through senior high school years. At six month intervals, study participants were asked to report their sleep patterns. At the same intervals heights and weights were reported and BMIs were calculated. Study authors suggest the results could have far-reaching implications and aid in reducing the high levels of adolescent obesity in the United States.

"The psychosocial and physical consequences of adolescent obesity are well documented, yet the rate has more than tripled over the last four decades," says lead author Jonathan A. Mitchell, PhD, postdoctoral fellow in the Center for Clinical Epidemiology and Biostatistics at the Penn Medicine. "What we found in following these adolescents is that each additional hour of sleep was associated with a reduced BMI for all participants, but the reduction was greater for those with higher BMIs. The study is further evidence to support that getting more sleep each night has substantial health benefits during this crucial developmental period."

Overall, researchers noted the strength of the association between sleep and BMI was weaker at the lower tail of the BMI distribution, compared to the upper tail. For example, each additional hour of sleep was associated with only a slight reduction in BMI (0.07 kg/m2) at the 10th BMI percentile. In comparison, at the 50th percentile a higher reduction in BMI was observed (0.17 kg/m2), and at the 90th percentile an even greater reduction in BMI was observed (0.28 kg/m2). Importantly, the relationship between sleep duration and BMI remained after adjusting for time spent in front of computer and television screens and being physically activity, leading to the conclusion that more sleep could contribute to the prevention of adolescent obesity, even if national screen time and physical activity guidelines are met.

Based on the results, the authors suggest that increasing sleep from 8 to 10 hours per day at age 18 could result in a 4 percent reduction in the number of adolescents with a BMI above 25 kg/m2. At the current population level, a 4 percent reduction would translate to roughly 500,000 fewer overweight adolescents.

"Educating adolescents on the benefits of sleep, and informing them of sleep hygiene practices have shown to have little impact on adolescent sleep duration," said Mitchell. "One possible solution could be for high schools to delay the start to the school day. Previous research has shown that delaying the start of the school day even by 30 minutes results in a 45-minute per day increase in sleep. Since our study shows increasing sleep by an hour or more could lead to a lower BMI, delaying the start of the school day could help to reduce obesity in adolescents."


'/>"/>

Contact: Katie Delach
katie.delach@uphs.upenn.edu
215-349-5964
University of Pennsylvania School of Medicine
Source:Eurekalert

Related medicine news :

1. Study Suggests Vaccine May Help Kids With Brain Cancer
2. Study reveals how cancer drug causes diabetic-like state
3. Coffee Drinking in Pregnancy Wont Lead to Sleepless Baby: Study
4. Lower GI problems plague many with rheumatoid arthritis, Mayo Clinic study finds
5. Veggies Like Broccoli, Cabbage May Help Fight Breast Cancer: Study
6. No Added Cancer Risk From Hip Replacement Materials: Study
7. Reported Decline in U.S. Pneumonia Deaths May Be False: Study
8. Early Study Finds Some Promise for Lung Cancer Vaccine
9. Narcissists Often Ace Job Interviews, Study Finds
10. Sexual objectification of female artists in music videos exists regardless of race, MU study finds
11. Soy may alleviate hot flashes in menopause, large-scale study finds
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/24/2016)... ... June 24, 2016 , ... ... skills and infrastructure. Most providers, however, are unsure how to move forward, given ... to define a path forward tailored to an organization’s specific needs. , ...
(Date:6/24/2016)... ... June 24, 2016 , ... Today, InhaleLabs.com (Inhale) offilially launched its ... by matching users with high quality water pipes within an ideal price range. The ... Inhale was founded by two brothers, Nick and Mike Hunter, who use medical cannabis ...
(Date:6/24/2016)... ... 24, 2016 , ... Dr. Seema Daulat, a native Texan and University of ... location as of July 13, 2016. , Dr. Daulat earned her Doctorate of Medicine ... regularly volunteered at the Agape Clinic serving Dallas’ underprivileged community. , Following medical school, ...
(Date:6/23/2016)... Los Angeles, CA (PRWEB) , ... June 23, 2016 , ... ... being conducted that may expose a possible link between head and neck cancer in ... individuals participating in the study were evaluated based on whether they had gum disease, ...
(Date:6/23/2016)... ... June 23, 2016 , ... The Mechille Wilson Agency, a Texas-based insurance ... and the surrounding region, is initiating a charity drive to assist a student to ... for a scholarship fund that will be presented to the chosen student to help ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... -- Roche (SIX: RO, ROG; OTCQX: RHHBY) announced that ... PCT (procalcitonin) assay as a dedicated testing solution for ... clearance, Roche is the first IVD company in the ... risk assessment and management. PCT is a ... in blood can aid clinicians in assessing the risk ...
(Date:6/23/2016)... June 23, 2016 Bracket , a leading ... next generation clinical outcomes platform, Bracket eCOA (SM) 6.0, ... June 26 – 30, 2016 in Philadelphia ... Clinical Outcome Assessment product of its kind to fully integrate ... Bracket eCOA 6.0 is a flexible platform for electronic ...
(Date:6/23/2016)... Revolutionary technology includes multi-speaker listening ... industry leaders in advanced audiology and hearing aid technology, ... ™, the world,s first internet connected hearing aid that ...      (Photo: http://photos.prnewswire.com/prnh/20160622/382240 ) , ... ,world firsts,: , TwinLink™ - the first ...
Breaking Medicine Technology: