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ORIGINAL ARTICLE  BODY COMPOSITION, NUTRITION 

The Journal of Sports Medicine and Physical Fitness 2016 January-February;56(1-2):79-84

Copyright © 2016 EDIZIONI MINERVA MEDICA

lingua: Inglese

Discriminant models to estimate the body weight loss after a six-month long diet and exercise-based intervention

Miguel A. ROJO-TIRADO 1, Pedro J. BENITO 1, Ana B. PEINADO 1, Augusto G. ZAPICO 2, Francisco J. CALDERÓN 1 , on behalf of PRONAF study group

1 Department of Health and Human Performance, Faculty of Physical Activity and Sport Sciences Technical University of Madrid, Madrid, Spain; 2 Department of Physical Education, Education Faculty Complutense University of Madrid, Spain


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BACKGROUND: The main concern of the people who follow a weight loss program is the body weight loss, independently of the body composition. The aim of this study was to create a mathematical model able to discriminate the body weight change based on initial body composition variables.
METHODS: The study included 239 overweight and obese participants (18-50 years; Body Mass Index (BMI)>25 and <34.9 kg/m2). Participants performed an endrance, strength or a combined endurance and strength training three times per week, or followed the American College of Sports Medicine physical activity guidelines for body weight loss, during twenty-four weeks while having 25-30% caloric restriction. Two multivariate discriminant models were performed taking into account the groups below and above the mean body weight change.
RESULTS: The discriminant models obtained could discriminate the body weight change with a 65-70% of correct classification. BW, fat-free mass (FFM), and fat mass (FM) were shown to be the most discriminant variables for the discriminant models.
CONCLUSIONS: People having higher FM and FFM at the beginning of an intervention will lose a greater amount of weight until the end of it.

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