Energy balance
A 7-day diet-induced energy restriction of 50% TDEE reduces body mass and fasting blood glucose without eliciting compensatory decreases in basal metabolic rate (BMR) or physical activity energy expenditure (PAEE) in overweight and obese adults.
If you are overweight or obese, a strict 7-day liquid diet cutting your calories in half can produce initial weight loss and improve blood pressure and glucose without causing your body to immediately slow down its metabolism or reduce your spontaneous movement. This suggests short-term aggressive restriction can be a viable strategy for initial health improvements, though long-term maintenance requires different strategies.
In the present study, a 7-day diet-induced energy restriction of 50% did not elicit compensatory changes in PAEE and BMR in overweight and obese men and women.
Why this rating
Small sample size (n=19 completed), short duration (7 days), and lack of control group (pre-post design), though methodology for PAEE/BMR measurement was rigorous.
Source
The acute effects of diet-induced energy restriction on physical activity energy expenditure and basal metabolic rate in men and women with overweight and obesity
Matevž Arčon et al. · Human Nutrition & Metabolism · 2023
DOI 10.1016/j.hnm.2023.200185
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