By BizLED Bureau
August 19, 2015: It is very important for the hotel management to understand the biological effects of lighting if they want to make their guest comfortable. Those days have gone when you can just use lights to brighten up a space. Now, people are aware of the effects and benefits of lights, particularly of LED lights.
If your guest do not get good night sleep, you need to blame it on the room lighting system, its color, temperature, etc. Surprised?
Studies have shown that our biological clocks tells us when to sleep and when to wake up. This is impacted by the colour and brightness of the light around us. LED lights that are soft with warm tones can do this work easily. High-intensity light that have a lot of blue colorkeeps us awake.
Osram and the Bergisch University of Wuppertal in Germany did a study in the Jammertal Golf and Spa Resort hotel in Datteln, Germany, to understand if the use of lighting that is adapted to biological rhythms (chronobiological lighting) will help guests in a hotel to be more active in the day and help to have better sleep at night.
While a group of 40 people were exposed to traditional hotel lighting, the second group was kept for two days in an environment with lighting specially designed to simulate the natural sky. The two groups were tested with the help of ECGs, motion sensors and measurement of cortisol and melatonin levels.
The team led by Professor Dr Jarek Krajewski found that the chronobiologically adapted lighting helped to reduce stress, fatigue and discomfort among the guests. The quality of sleep of the group was better and restlessness reduced due to a rapid reduction of melatonin during night was also reduced to a great extent. The group was also less tired during the day.
The study emphasised that good lighting not only help to give you good sleep, but will also ensure that you are more alert and full of energy during the day, which is possible with bright cold light (?activating? light) during the early part of the day.
?Bright blue light is not good in the evening and at night, as it disturbs the circadian system and reduces sleep. That?s why warm white light at low illuminance levels should be used in the hotel rooms in the evening and night,? explains Andreas Wojtysiak, senior light and health scientist at Osram. “To ensure a smooth transition from wakeful to sleepy and back again, hotel guests need a nice warm glow in the evening and high-intensity cool light during the day,? he added.
?In the day time, the hotel guests should be exposed to light with a cool color temperature, as emitted from LEDs with a blueish daylight-white light color, as these have an invigorating effect. In the evening, LED lamps with a low blue component should be used or LED light sources with a reddish warm-white light color, as these help the body to become tired,? he adds.
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