Dieters can improve their chances of losing weight if they get a good sleep each night.
Sleeping well not only increases fat loss for the dieter, it also helps control feelings of hunger.
The study conducted by the University of Chicago was published in the Annals of Internal Medicine. The research studied ten people aged 35-49 years old, ranging from overweight to obest who were placed on a calorie restricted diet.
The ten volunteers underwent a fortnight where they spent eight and a half hours in bed each night and getting an average of seven hours and twenty five minutes of sleep. They also went a fortnight where they were given give and a half hours in bed with an average of five hours and 11 minutes of sleep each night.
Results revealed that dieters lost the same amount 6.6lb or around 3kg during each 14 day session, if they had a full night’s sleep or less.
However if they got adequate sleep then more than half of their weight loss was fat in comparison to only a quarter when they cut back on sleep. Having a good night’s sleep allowed for them to control their hunger.
Average levels of ghrelin, a hormone that triggers hunger and reduces energy expenditure, didn’t change when dieters spend eight and a half hours in bed. When they spend five and a half hours in bed, their ghrelin levels in all dieters rose over the two weeks.
The study found that the dieters lost the same amount, 6.6lb, or around 3kg, during each 14-day session, if they had a full night’s sleep or less.
Volunteers followed a completely balanced diet with calories restricted to 90 per cent of what a person needs to maintain his or her weight without exercise.
The number of calories consumed over both fortnights – about 1,450 a day – was kept the same and volunteers spent their waking hours engaged in home or office like work or leisure activities.
Plamen Penev, study director and assistant professor of medicine at the University of Chicago, said, “If your goal is to lose fat, skipping sleep is like poking sticks in your bicycle wheels. Cutting back on sleep, a behaviour that is ubiquitous in modern society, appear to compromise efforts to lose fat through dieting. In our study it reduced fat loss by 55 per cent.”
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