Dr. Palmeira is an Associate Professor at the Universidade Lusófona de Humanidades e Tecnologias, Faculty of Physical Education and Sport, in Lisbon, Portugal. He has a multidisciplinary academic background, with Physical Education and Sport (BSc), Sport Psychology (MSc), and Exercise and Health (PhD) degrees, all from the Faculty of Human Movement, Technical University of Lisbon. At the Universidade Lusófona he is Coordinator of the Center for Studies in Exercise and Health since 2005 and the Director of the Masters Program in Exercise and Well-Being. Behavior change in obesity treatment is his major focus of research. He began looking at the predictive power of several behavior change theories , and now he is narrowing his focus to the role of treatment changes in subjective well-being and body image variables as potential predictors of long-term weight loss. He presents his work regularly at ISBNPA, NAASO/The Obesity Society and in Sport and Exercise Psychology conferences. He has won a national prize as a young investigator in sport sciences and the work developed with his master thesis toped 2nd place at the European Young Investigator Award from the European Federation of Sport and Exercise Psychology. Presently his focus is on the exercise role on adolescent’s obesity. He works in the TOP project (Treatment of Pediatric Obesity - Tratamento da Obesidade Pediátrica) with the Obese Adolescent Consult at the Hospital de Santa Maria, which received a funding from the Portuguese Science Foundation for 2010-2013. He is the Vide-President of the Portuguese Society of Sport Psychology (SPPD), participated actively at the formation of the European Network of Young Specialist in Sport Psychology (ENYSSP) and he is one of the Portuguese delegates of SPPD in the international sport psychology institutions. He is also an International Affiliate of the American Psychological Association (since 1996), a member of NAASO/The Obesity Society (since 2001) and ISBNPA (since 2004), as well as several Portuguese associations related with the study of health behavior. He has been in the organizing committee of several international and national conferences in the field of sport and exercise psychology and obesity. He was the chair of the organizing committee for the Satellite Symposium of the ISBNPA 2009 meeting, held in Sintra on June 21-23, 2009, and he is currently responsible for producing the ISBNPA newsletter, as member of the ISBNPA Communications Committee. He is 41 years old and a father of two children, aged 10 and 8 years old.