Fwd: [kiddoc] Childhood Sleep Time

 

Childhood Sleep Time   12/8/2008 10:31 PM  from  http://pediatrics.aappublications.org/cgi/content/abstract/122/5/955?rss=1
Childhood Sleep Time PEDIATRICS Vol. 122 No. 5 November 2008, pp. 955-960 (doi:10.1542/peds.2007-3521) This Article Full Text Full Text (PDF) P3Rs: Submit a response Alert me when this article is cited Alert me when P3Rs are posted Alert me if a correction is posted Citation Map Services E-mail this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to My File Cabinet Download to citation manager Citing Articles Citing Articles via CrossRef Google Scholar Articles by Landhuis, C. E. Articles by Hancox, R. J. PubMed PubMed Citation Articles by Landhuis, C. E. Articles by Hancox, R. J. Related Collections Nutrition & Metabolism ARTICLE Childhood Sleep Time and Long-Term Risk for Obesity: A 32-Year Prospective Birth Cohort Study Carl Erik Landhuis, BA, Richie Poulton, PhD, David Welch, PhD and Robert John Hancox, MD Dunedin Multidisciplinary Health and Development Research Unit, Department of Preventive and Social Medicine, Dunedin School of Medicine, University of Otago, Dunedin, New Zealand OBJECTIVE. Associations between short sleep duration and increased BMI have been found in children and adults. However, it is not known whether short sleep time during childhood has long-term consequences. We assessed the association between sleep time in childhood and adult BMI in a birth cohort. METHODS. Study members were a general-population birth cohort of 1037 participants (502 female) who were born in Dunedin, New Zealand, between April 1972 and March 1973. Parental reports of bedtimes and rising times collected at ages 5, 7, 9, and 11 years were used to estimate childhood sleep time. Linear regression analysis was used to analyze the association between childhood sleep time and BMI measured at 32 years of age. RESULTS. Shorter childhood sleep times were significantly associated with higher adult BMI values. This association remained after adjustment for adult sleep time and the potential confounding effects of early childhood BMI, childhood socioeconomic status, parental BMIs, child and adult television viewing, adult physical activity, and adult smoking. In logistic regression analyses, more sleep time during childhood was associated with lower odds of obesity at 32 years of age. This association was significant after adjustment for multiple potential confounding factors. CONCLUSIONS. These findings suggest that sleep restriction in childhood increases the long-term risk for obesity. Ensuring that children get adequate sleep may be a useful strategy for stemming the current obesity epidemic. Key Words: BMI • child development • cohort studies • long-term outcome • sleep Accepted Feb 6, 2008.
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Posted By John C Kim to kiddoc at 12/28/2008 07:59:00 PM

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Report Ties Children's Use of Media to Their Health   12/3/2008 1:24 PM  from  http://www.nytimes.com/2008/12/02/arts/02stud.html?ref=health
Report Ties Children's Use of Media to Their Health E-MAIL  By BRIAN STELTER Published: December 1, 2008 The National Institutes of Health and a nonprofit advocacy group, Common Sense Media, have another reason for President-elect Barack Obama to keep urging parents to "turn off the TV." In what researchers call the first report of its kind, a review of 173 studies about the effects of media consumption on children asserts that a strong correlation exists between greater exposure and adverse health outcomes. "Coach potato does, unfortunately, sum it up pretty well," said Ezekiel J. Emanuel, chairman of the bioethics department at the institutes' clinical center, one of the study's five reviewers. The report should compel lawmakers to underwrite media education efforts and public service advertising campaigns and should motivate the entertainment industry to be more "responsible and responsive," said Jim Steyer, the chief executive of Common Sense Media, which helped to finance the study. "The research is clear that exposure to media has a variety of negative health impacts on children and teens," he said. Dr. Emanuel, Mr. Steyer and others plan to brief Washington policy makers on the study on Tuesday. Joined by researchers at Yale University and California Pacific Medical Center, Dr. Emanuel's team analyzed almost 1,800 studies conducted since 1980 and identified 173 that met the criteria the researchers set. In a clear majority of those studies more time with television, films, video games, magazines, music and the Internet was linked to rises in childhood obesity, tobacco useand sexual behavior. A majority also showed strong correlations — what the researchers deemed "statistically significant associations" — with drug and alcohol use and low academic achievement. The evidence was somewhat less indicative of a relationship between media exposure and attention-deficit hyperactivity disorder, the seventh health outcome that was studied. Dr. Emanuel, whose brother, Rahm, is the president-elect's chief of staff, said he was surprised by how lopsided the findings were. "We found very few studies that had any positive association" for children's health, he said. Researchers sought to look at the health effects of a wide array of media and distill 30 years of research into a simple message. "The average parent doesn't understand that if you plop your kids down in front of the TV or the computer for five hours a day, it can change their brain development, it can make them fat, and it can lead them to get involved in risky sexual activity at a young age," Mr. Steyer said. Acknowledging that socioeconomic status and other factors can affect children's health, Dr. Emanuel said the researchers chose studies that controlled for outside variables and ranked the strength of evidence accordingly. Mr. Steyer said he was surprised to find an absence of research into the impact of new technologies. "Media has evolved at a dizzying pace, but there's almost no research aboutFacebook, MySpace, cellphones, et cetera," he said. His organization, which was founded in 2003 and provides family-oriented reviews and ratings of Web sites, television shows and video games, intends to push for more research into the media's effects on children and the setting of limits on advertising to children. Mr. Obama has shown interest in the subject, telling parents to "turn off the television set and put the video games away" in speeches and running a commercial during the campaign, "Turn It Off," that focused on education. While Dr. Emanuel wouldn't say if the study was a subject at Thanksgiving dinner with his brother, he said that more research into media's effects on children's health was necessary. "We have to be concerned about what's on TV, but we also have to be concerned about how much of the day kids are actually interacting with TV and other media," he said.
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Q: How much sleep is ideal?

Q: How much sleep is ideal?   12/24/2008 1:16 PM  from  http://www.time.com/time/health/article/0,8599,1812420,00.html
Q: How much sleep is ideal? A: Studies show that people who sleep between 6.5 hr. and 7.5 hr. a night, as they report, live the longest. And people who sleep 8 hr. or more, or less than 6.5 hr., they don't live quite as long. There is just as much risk associated with sleeping too long as with sleeping too short. The big surprise is that long sleep seems to start at 8 hr. Sleeping 8.5 hr. might really be a little worse than sleeping 5 hr.
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Childhood Sleep Time

Childhood Sleep Time   12/8/2008 10:31 PM  from  http://pediatrics.aappublications.org/cgi/content/abstract/122/5/955?rss=1
Childhood Sleep Time PEDIATRICS Vol. 122 No. 5 November 2008, pp. 955-960 (doi:10.1542/peds.2007-3521) This Article Full Text Full Text (PDF) P3Rs: Submit a response Alert me when this article is cited Alert me when P3Rs are posted Alert me if a correction is posted Citation Map Services E-mail this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to My File Cabinet Download to citation manager Citing Articles Citing Articles via CrossRef Google Scholar Articles by Landhuis, C. E. Articles by Hancox, R. J. PubMed PubMed Citation Articles by Landhuis, C. E. Articles by Hancox, R. J. Related Collections Nutrition & Metabolism ARTICLE Childhood Sleep Time and Long-Term Risk for Obesity: A 32-Year Prospective Birth Cohort Study Carl Erik Landhuis, BA, Richie Poulton, PhD, David Welch, PhD and Robert John Hancox, MD Dunedin Multidisciplinary Health and Development Research Unit, Department of Preventive and Social Medicine, Dunedin School of Medicine, University of Otago, Dunedin, New Zealand OBJECTIVE. Associations between short sleep duration and increased BMI have been found in children and adults. However, it is not known whether short sleep time during childhood has long-term consequences. We assessed the association between sleep time in childhood and adult BMI in a birth cohort. METHODS. Study members were a general-population birth cohort of 1037 participants (502 female) who were born in Dunedin, New Zealand, between April 1972 and March 1973. Parental reports of bedtimes and rising times collected at ages 5, 7, 9, and 11 years were used to estimate childhood sleep time. Linear regression analysis was used to analyze the association between childhood sleep time and BMI measured at 32 years of age. RESULTS. Shorter childhood sleep times were significantly associated with higher adult BMI values. This association remained after adjustment for adult sleep time and the potential confounding effects of early childhood BMI, childhood socioeconomic status, parental BMIs, child and adult television viewing, adult physical activity, and adult smoking. In logistic regression analyses, more sleep time during childhood was associated with lower odds of obesity at 32 years of age. This association was significant after adjustment for multiple potential confounding factors. CONCLUSIONS. These findings suggest that sleep restriction in childhood increases the long-term risk for obesity. Ensuring that children get adequate sleep may be a useful strategy for stemming the current obesity epidemic. Key Words: BMI • child development • cohort studies • long-term outcome • sleep Accepted Feb 6, 2008.
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