11:07
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Children and teens who go to bed late and wake up late are more
likely to be overweight than their peers who go to bed early and rise
early, Australian researchers suggest.
For the study, 2,200 Australians aged nine to 16 kept track of their bedtimes, wake times as well as time spent watching TV, playing videogames or using computers. They also wore pedometers to record their physical activity levels, and weights were measured.
When they went to sleep was key to the results.
Those who went to bed late and got up late were 1.5 times more likely to become obese than those who went to bed early and got up early, even when they got the same amount of sleep, Carol Maher, a post-doctoral fellow with the University of South Australia, and her co-authors reported in Saturday's issue of the journal Sleep. Read More
For the study, 2,200 Australians aged nine to 16 kept track of their bedtimes, wake times as well as time spent watching TV, playing videogames or using computers. They also wore pedometers to record their physical activity levels, and weights were measured.
When they went to sleep was key to the results.
Those who went to bed late and got up late were 1.5 times more likely to become obese than those who went to bed early and got up early, even when they got the same amount of sleep, Carol Maher, a post-doctoral fellow with the University of South Australia, and her co-authors reported in Saturday's issue of the journal Sleep. Read More
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