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Please use this identifier to cite or link to this item: http://hdl.handle.net/1993/4497

Title: Effects of short-term sleep restriction on energy balance in healthy young adults
Authors: Chen, Jinya
Supervisor: Jones, Peter (Food Science)
Examining Committee: Taylor, Carla (Human Nutritional Sciences) Giesbrecht, Gordon (Kinesiology and Recreation Management)
Graduation Date: May 2011
Keywords: SHORT SLEEP
ENERGY BALANCE
ENERGY INTAKE
ENERGY EXPENDITURE
OBESITY
WEIGHT GAIN
FOOD INTAKE
HABITUAL SLEEP
RESTING METABOLIC RATE
RESPIRATORY QUOTIENT
PHYSICAL ACTIVITY LEVEL
ACTIVITY ENERGY EXPENDITURE
FAT INTAKE
EATING OCCASIONS
Issue Date: 8-Apr-2011
Abstract: Insufficient sleep may be associated with obesity via increased energy intake and/or decreased energy expenditure. The present study therefore aimed to investigate effects of sleep restriction on energy balance in healthy young adults. Participants (14 men, 13 women) aged 35.3 ± 1.0 y with 23.6 ± 0.2 kg/m2 BMI completed a randomized, crossover study exposed to short and habitual sleep with 4 wk washout. Controlled diets were provided during the first 4 d, followed by 2 d of ad libitum eating. Ad libitum energy intake, energy expenditure and physical activity level were determined as well as energy balance and body weight. Results showed that ad libitum energy intake (p = 0.031), as well as total fat (p = 0.018) increased after short compared with habitual sleep, but physical activity level, energy expenditure, energy balance, and body weight remained unaffected by sleep duration. In conclusion, sleep deprivation elevates energy intake, which may lead to positive energy balance over time and increase the risk of weight gain and/or obesity.
URI: http://hdl.handle.net/1993/4497
Appears in Collection(s):FGS - Electronic Theses & Dissertations (Public)

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