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BACKGROUND This study was conceived to analyze how exercise and weight management psychosocial variables, derived from several health behavior change theories, predict weight change in a short-term intervention. The theories under analysis were the Social Cognitive Theory, the Transtheoretical Model, the Theory of Planned Behavior, and Self-Determination(More)
Background: The purpose of this study was to analyze pretreatment predictors of short-term weight loss in Portuguese overweight and obese women involved in a weight management program. Behavioral and psychosocial predictors were selected a priori from previous results reported in American women who participated in a similar program.
The objective was to compare measures from dual-energy X-ray absorptiometry (DXA), bioelectrical impedance analysis (BIA) and anthropometry with a reference four-compartment model to estimate fat mass (FM) and fat-free mass (FFM) changes in overweight and obese women after a weight-loss programme. Forty-eight women (age 39.8 +/- 5.8 years; weight 79.2 +/-(More)
BACKGROUND In addition to the benefits on physical and mental health, cardiorespiratory fitness has shown to have positive effects on cognition. This study aimed to investigate the relationship between cardiorespiratory fitness and body weight status on academic performance among seventh-grade students. METHODS Participants included 1531 grade 7 students(More)
Long-term behavioral self-regulation is the hallmark of successful weight control. We tested mediators of weight loss and weight loss maintenance in middle-aged women who participated in a randomized controlled 12-month weight management intervention. Overweight and obese women (N = 225, BMI = 31.3 +/- 4.1 kg/m(2)) were randomly assigned to a control or a(More)
This article explores the topics of motivation and self-regulation in the context of weight management and related behaviors. We focus on the role of a qualitative approach to address motivation--not only considering the level but also type of motivation--in weight control and related behaviors. We critically discuss the operationalization of motivation in(More)
BACKGROUND Changes in body image and subjective well-being variables (e.g. self-esteem) are often reported as outcomes of obesity treatment. However, they may, in turn, also influence behavioral adherence and success in weight loss. The present study examined associations among obesity treatment-related variables, i.e., change in weight, quality of life,(More)
On the occasion of the 9 th Annual Meeting of the International Society of Behavioral Nutrition and Physical Activity (ISBNPA) in Lisbon (2009), a satellite meeting was organized in Sintra entitled Self-Determination Theory and Motivational Interviewing in Behavioral Nutrition , Physical Activity, and Health. The organizers of this small meeting (about 100(More)
Introduction: A new generation of videogames, also called Active Video Games (AVG), may contribute to increase youth Physical Activity (PA) levels. This systematic review aims to provide a synthesis of the current knowledge regarding physical activity promotion in overweight children and adolescents through AVG play. Methods: We conducted a search strategy(More)
Introduction: Despite all the efforts to promote physical activity, there is a decline of its level from childhood to adolescence. To create attractive physical activity programs it is important to consider a new generation of video games: the active video games. The aim study protocol is to describe an experimental design trial protocol to verify if the(More)