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Please use this identifier to cite or link to this item: http://hdl.handle.net/10400.5/4854

Title: The role of body image in the context of obesity treatment and associated behaviors in women
Authors: Carraça, Eliana Cristina Veiga
Advisor: Teixeira, Pedro Jorge do Amaral de Melo
Keywords: Body dissatisfaction
Body image
Controlled motivation for treatment
Dysfunctional investment in appearance
Eating self-regulation
Physical activity
Psychological well-being
Weight management
Actividade física
Auto-regulação alimentar
Imagem corporal
Issue Date: 2012
Citation: Carraça, Eliana C. V. (2012) - The role of body image in the context of obesity treatment and associated behaviors in women. Tese de Doutoramento. Universidade Técnica de Lisboa. Faculdade de Motricidade Humana.
Abstract: This dissertation sought to investigate the role of body image in the context of obesity treatment. Specifically, it was designed to i) identify correlates of pre-treatment body image (evaluation and investment dimensions) in overweight/obese women, ii) investigate body image changes during and after a lifestyle weight loss intervention, iii) examine how, and by what mechanisms, body image changed over time, and iv) investigate the implications of this change to the process of weight management and associated behaviors. The four studies included in this dissertation were developed in the context of a longitudinal randomized controlled trial, consisting of a 1-year behavior change intervention and a 2-year follow-up, including 239 premenopausal women with overweight or obesity (age: 37.6±7.1yr; BMI: 31.5±4.1kg/m2). The main intervention aimed at increasing physical activity, adopting a moderately restricted diet, and ultimately establishing exercise and eating patterns that would support weight maintenance. A module covering body image contents was also included. The comparison group received a general health education curriculum. Study 1 highlighted the damaging effect of dysfunctional investment in appearance, rather than body dissatisfaction, for psychological well-being, and showed that controlled motivations might be one of the mechanisms behind this detrimental effect. In turn, studies 2 and 3 suggested that body image could be effectively enhanced during obesity treatment, leading to a healthier eating self-regulation, and emphasized that physical activity could play an important role in improving body image in overweight/obese women, and also in preventing its deterioration overtime, mainly by tapping its excessive salience to one’s life and self. Finally, study 4 showed that body image investment and depressive mood (to a lesser extent) mediated the relation between physical activity and critical markers of eating self-regulation, and suggested that these associations are relatively consistent in this population. These findings highlighted the importance of enhancing body image during obesity treatment, especially its investment component, to improve well-being, eating regulation, and ultimately weight-related outcomes. Future weight loss interventions would benefit from performing a more thorough assessment of body image investment features and from proactively addressing them as part of their protocols. Furthermore, regular physical activity participation should be emphasized in these interventions, given its important contribution to long-term weight management, which goes beyond increased energy expenditure. In fact, physical activity can also ameliorate key psychological variables such as body image and even prevent their deterioration overtime, which in the end, might reduce susceptibility to relapse and favor lasting weight maintenance.
Esta dissertação investigou o papel da imagem corporal no contexto do tratamento da obesidade. Teve como objetivos específicos: i) identificar correlatos da imagem corporal (dimensões de insatisfação e investimento disfuncional na imagem) à entrada de uma intervenção de controlo do peso, ii) investigar as alterações da imagem corporal durante e após uma intervenção comportamental de controlo do peso, iii) explorar potenciais mecanismos subjacentes às alterações da imagem corporal; e iv) investigar as implicações destas alterações no processo de gestão do peso e comportamentos associados. Os quatro estudos desta tese foram desenvolvidos no âmbito de um estudo experimental, controlado e com distribuição aleatória (RCT), compreendendo uma intervenção de 1 ano e um follow-up de 2 anos. A amostra incluiu 239 mulheres pré-menopáusicas com excesso de peso ou obesidade (idade: 37.6±7.1 anos; IMC: 31.5±4.1kg/m2). A intervenção visou estabelecer padrões saudáveis de atividade física e comportamento alimentar, compatíveis com a manutenção do peso no longo-prazo. Incluiu também um módulo direcionado para as questões da imagem corporal. O grupo de controlo teve acesso a um currículo geral de educação para a saúde. (...)
Description: Doutoramento em Motricidade Humana na especialidade de Saúde e Condição Física
URI: http://hdl.handle.net/10400.5/4854
Appears in Collections:BFMH - Teses de Doutoramento / Ph.D.Thesis

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