sleep study03 Nov 2012

http://www.telegraph.co.uk

 

American and British researchers compared two groups of residents in the US state of Maine. One group lived within a mile of a wind farm and the second group did not.

Both sets of people were demographically and socially similar, but the researchers found major differences in the quality of sleep the two groups enjoyed.

The findings provide the clearest evidence yet to support long-standing complaints from people living near turbines that the sound from their rotating blades disrupts sleep patterns and causes stress-related conditions.

The study will be used by critics of wind power to argue against new turbines being built near homes and for existing ones to be switched off or have their speed reduced, when strong winds cause their noise to increase.

The researchers used two standard scientific scales, the Pittsburgh Sleep Quality Index, which measures the quality of night-time sleep, and the Epworth Sleepiness Scale, which measures how sleepy people feel when they are awake.

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