By EMMA INNES
PUBLISHED: 11:37 GMT, 19 November 2013 |
UPDATED: 11:39 GMT, 19 November 2013
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People who have regular sleep patters have lower
levels of body fat
·
Getting less than 6.5 hours, or more than 8.5
hours, sleep a night is associated with having higher levels of body fat in
women
·
Poor sleep quality affects the body's levels of
hormones related to hunger
If you want to lose weight, but are not a fan of the gym, the results
of a new study could offer a welcome alternative. People who wake up and go to
bed at the same time every day are slimmer than those with irregular sleep
patterns, the study found. Researchers studied more than 300 women, aged 17 to
26, over the course of several weeks and found that those with the best - or
most consistent - sleeping habits had less body fat.
The volunteers were assessed for body composition, and were then were
given an activity tracker to record their movements during the day, and their
sleep patterns at night. The study, published in the American Journal of Health
Promotion, found that getting less than 6.5 hours, or more than 8.5 hours,
sleep a night is linked to higher levels of body fat. Women with more than 90
minutes of variation in sleep and wake time during the week had higher body fat
levels than those with less than 60 minutes of variation.
Exercise science professor Bruce Bailey said poor sleep quality can
result in higher body fat by affecting the hormones related to appetite. Professor
Bailey said: ‘We have these internal clocks and throwing them off and not
allowing them to get into a pattern does have an impact on our physiology.’ He
says there are ways to improve sleep quality, such as regular exercise, keeping
your bedroom quiet and dark, and using beds only for sleeping.
‘Sleep is often a casualty of trying to do more and be better and it is
often sacrificed, especially by college students, who kind of wear it as a
badge of honour,’ Professor Bailey said. Previous research from Temple
University, in Philadelphia, revealed that when people get a good night's sleep
they have lower fasting levels of the hunger-regulating hormone leptin.
They found that when children slept more, they consumed 134 fewer
calories a day and lost weight.
These findings were supported by research from the Mayo Clinic in
Rochester, Minnesota which also revealed that sleep deprived people eat more
calories. The researchers studied 17 healthy young people and found that when
they were sleep deprived they ate more. They believe this is because when the
volunteers were tired, they had higher levels of the hormones leptin and
ghrelin, both of which are associated with appetite.
Source: http://www.dailymail.co.uk/health/article-2509828/The-secret-skinny-Going-bed-waking-time-day.html#ixzz2lGS0hlZH
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