Home > Lifestyle > Health
Sunday August 10, 2014 MYT 12:00:00 AM
Monday August 11, 2014 MYT 7:13:32 PM
In Antarctica, the sun begins to poke through at the end of August, after four months of complete darkness. –AFP
In a first-of-its-kind study, French researchers found that artificial blue light can synchronise the body clock under conditions in which natural light is scarce or unavailable.
They performed their experiment under real conditions involving crew members of the Franco-Italian polar research station Concordia, located in Antarctica.
Because the sun disappears there from May until late August, the 13 Concordia crew members who endure four months of complete darkness made excellent test subjects.
“Although the benefits of blue light for the biological clock have already been demonstrated in the past, all the studies were conducted under conditions that are difficult to reproduce under real conditions,” says lead study author Claude Gronfier.
The internal body clock regulates sleep cycles based on the availability of natural light and the transition to darkness, known as circadian rhythms.
It is located in the brain and consists of over 20,000 neurons that control the release of hormones to regulate sleep and wake cycles.
Regular meals, exercise and body temperature all contribute to the upkeep of the body clock, although light is the most important.
In the study, researchers exposed crew members to a white light and a blue light (which actually appears white to the human eye), alternating on a weekly basis for a period of nine weeks.
Nothing changed other than the light: crew members were asked to maintain their daily routines for the sake of results.
The results not only showed increased sleep and increased motivation in the daytime during the weeks of blue light, but they also showed no disturbance in circadian rhythm.
On the flipside, circadian rhythms were disturbed during weeks of plain white light.
Results have encouraged researchers, who envision better lighting strategies for homes and workplaces in areas with limited light.
The study was published in PLOS ONE. – AFP Relaxnews
Tags / Keywords:
artificial blue light, realign body clock
‘Memory exercise keeps my mind active’
Voice-over wonders Apps that can turn you into the next Internet sensation
Bon Odori festival thrills crowd with folk dances and fireworks
Tell us your stories
Food made with love
Parents to the fore
Big guns stay on course for Cup KL and Selangor just a match away from the final
Baidu profit weighed down by offline mobile services push
Copyright © 1995-2015 Star Media Group Berhad (ROC 10894D)(Formerly known as Star Publications (Malaysia) Berhad)