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Minerva Gastroenterologica e Dietologica 2020 Mar 24
DOI: 10.23736/S1121-421X.20.02694-X
Copyright © 2020 EDIZIONI MINERVA MEDICA
lingua: Inglese
The different daily distribution of proteins does not influence the variations in body composition in a sample of subjects undergoing a low-calorie mediterranean-type diet
Mauro LOMBARDO 1, 2 ✉, Chiara BELLIA 3, Giovanni AULISA 1, Antonio PRATESI 4, Marco A. PERRONE 5, Elvira PADUA 1, 6, Ferdinando IELLAMO 5, 6, Massimiliano CAPRIO 1, 7, Alfonso BELLIA 1, 2
1 Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, Rome, Italy; 2 Department of Systems Medicine, University of Rome “Tor Vergata,” Rome, Italy; 3 Department of Biomedicine, Neuroscience and Advanced Diagnostics, University of Palermo, Palermo, Italy; 4 MMG Department, ULSS n.2 Marca Trevigiana, Treviso, Italy; 5 Division of Cardiology, University of Rome Tor Vergata, Rome, Italy; 6 School of Human Movement Science, University of Rome “Tor Vergata,” Rome, Italy; 7 Laboratory of Cardiovascular Endocrinology, IRCCS San Raffaele Pisana, Rome, Italy
BACKGROUND: Controversy exists regarding whether the different daily balances of proteins between meals and snacks in a low-calorie diet may influence the effects on body composition (BC) results. Aim of this study is to evaluate BC changes made by a lifestyle intervention in a randomised homogeneous sample of two groups with equal daily caloric reduction but different protein distributions between meals.
METHODS: Forty-seven men and women (mean ± SD age: 32 ± 10 y; body mass index: 28.4 ± 2.4) consumed an energy-restricted diet (788 kcal/d below the requirement) for eight weeks in a free- living contest. Subjects consumed 90.1 g protein/d (1.10 ± 0.16 g · kg-1· d-1 ) and were randomised in an EVEN (16.7% at breakfast, 32.8% at lunch, 31.3% at dinner, 19.2% at snacks;n= 23) or UNEVEN (15.4% at breakfast, 36.6% at lunch, 34.9% at dinner, 12.4% at snacks;n= 24) distribution pattern. The nutritional characteristics and caloric deficit of the two diets were similar.
RESULTS: The total sample had an overall improvement in both BMI (-0.9 ± 0.6) and fat mass (FM: -2.3 ± 1.5), while lean body mass was preserved (LBM: 0.0 ± 0.7). There were no significant differences between the two groups in variations in BC.
CONCLUSIONS: In overweight and obese subjects undergoing a Mediterranean-type low-calorie diet, a different distribution of daily protein intake between meals and snacks does not result in significant differences in terms of FM loss and LBM maintenance. This is one of the first studies showing that nutritional dietary plans with different daily protein distribution show no particular differences in fat loss and lean mass maintenance.
KEY WORDS: Protein; Diet; Daily; Weight loss; Body composition