Obesity has become a global epidemic with huge public health implications. Although clinical significant weight loss can be achieved by a combination of diet and behavioral modification, strong metabolic adaptations, with increased appetite and suppressed energy expenditure, are activated, which compromise weight loss maintenance and increase the risk of relapse. The aim of this project is to compare the effects of intermittent versus continuous energy restriction on the compensatory responses previously described using two low calory diets, with a similar macronutrient distribution. More specifically, this study will analyze, in the short-term, if an intermittent energy restricted diet is associated with less appetite and low reduction in energy expenditure when compared with a continuous energy restricted diet. This project can bring large practical benefits concerning the design of weight loss programs to minimize weight relapse.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
34
Norwegian University of Science and Technology
Trondheim, Norway
Appetite related hormones
Appetite-related hormones (active Ghrelin, PYY, GLP-1, CCK) will be measured in fasting and every 30 minutes up to 2,5 hours.
Time frame: 12 weeks after the intervention
Resting metabolic rate (RMR)
RMR measured by indirect calorimetry
Time frame: 12 weeks after the intervention
Exercise efficiency
Exercise efficiency measured by graded exercise on a bike
Time frame: 12 weeks after the intervention
Body composition
RMR measured by indirect calorimetry
Time frame: 12 weeks after the intervention
Body composition
RMR measured by indirect calorimetry
Time frame: At 6 months from baseline
Body composition
RMR measured by indirect calorimetry
Time frame: At 1 year from baseline
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