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Paparan cahaya terkait dengan kenaikan berat badan pada anak-anak

Date:

October 23, 2015

Source:

Queensland University of Technology

Summary:

Sebuah studi pertama di dunia telah mengungkapkan balita yang terkena cahaya lebih awal cenderung lebih berat. Dia mengatakan bahwa penelitian menunjukkan paparan cahaya , buatan dan alami , perlu menjadi bagian dari percakapan tentang berat badan anak , bersama dengan asupan kalori , penurunan aktivitas dan pola tidur fisik .

.......... " Kami menemukan intensitas  paparan cahaya di awal hari yang dikaitkan dengan peningkatan indeks massa tubuh ( BMI ) sementara anak-anak yang menerima dosis terbesarcahaya - luar dan dalam ruangan - di sore hari yang lebih ramping , " kata Ms Pattinson yang akan mempresentasikan temuannya di Sleep Conference Downunder ASA di Melbourne pada 23 Oktober .....more

Light exposure
linked to weight gain in children

Date:

October 23, 2015

Source:

Queensland University of Technology

Summary:

A world-first study has revealed pre-schoolers exposed to more light
earlier in day tend to weigh more. She says the research suggests light
exposure, artificial and natural, needs to be part of the conversation about
the weight of children, along with calorie intake, decreased physical activity
and sleep patterns.

.........................

A world-first study by QUT's Sleep in Early Childhood Research Group has
revealed pre-schoolers exposed to more light earlier in day tend to weigh more.

Cassandra Pattinson, a PhD student and her colleagues studied 48 children
aged three to five from six Brisbane childcare centres over a two week period,
measuring each child's sleep, activity and light exposure along with their
height and weight to calculate their BMI.

"We found moderate intensity light exposure earlier in the day was
associated with increased body mass index (BMI) while children who received
their biggest dose of light -- outdoors and indoors -- in the afternoon were
slimmer," said Ms Pattinson who will present her findings at the ASA Sleep
Downunder Conference in Melbourne on 23 October.

"Surprisingly physical activity was not associated with the body mass
of the children but sleep timing and light exposure was. This is the first time
light has been shown to contribute to weight in children.

"With an estimated 42 million children around the globe under the age
of five being classified as overweight or obese, it is a significant
breakthrough and a world-first.

"Thanks to artificial lighting, including light given off by tablets,
mobile phones, night lights, and television, modern children are exposed to
more environmental light than any previous generation. This increase in light
exposure has paralleled global increases in obesity."

The research team, from QUT's Institute of Health and Biomedical
Innovation, worked with the Centre for Children's Health Research

Ms Pattinson said it is known the timing, intensity and duration of
exposure to both artificial and natural light have acute biological effects in
mammals.

"The circadian clock -- also known as the internal body clock -- is
largely driven by our exposure to light and the timing of when that happens. It
impacts on sleep patterns, weight gain or loss, hormonal changes and our
mood," Ms Pattinson said

"Recent research in adults suggests exposure to light later in the day
is associated with increased body mass, but no studies had investigated these
effects in young children and it turns out it has the opposite effect.

"While adults who take in more morning light are slimmer, pre-school
children exposed to morning light tend to be heavier.

"Factors that impact on obesity include calorie intake, decreased
physical activity, short sleep duration, and variable sleep timing. Now light
can be added to the mix."

Ms Pattinson said the next step was to figure out how the research can be
used in the fight against obesity in children.

"We plan to conduct further studies with pre-schoolers and also
infants," she said.

"Animal studies have shown that timing and intensity of light exposure
is critical for metabolic functioning and weight status. Our findings suggest
that the same applies to us.

"This research suggests that exposure to different types of light at
different times now needs to be part of the conversation about the weight of
children."







Story Source:

The above post is reprinted from materials provided byQueensland
University of Technology. Note: Materials may be edited
for content and length.

http://www.sciencedaily.com/releases/2015/10/151023105914.htm

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