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Resumo (em inglês)
Abstract (in english)
\nThe prevalence of obesity is reaching epidemic proportions (Maggard et. al.,2005) and we can find historical trends on obesity in developed countries (McTigue, Garrett, & Popkin, 2002) and in Portugal (Marques-Vidal & Dias, 2005).\nObesity and overweight in adulthood are associated with large decreases in life expectancy and increases in early mortality (Peeters et al. 2003). Consequences of obesity include heart disease, diabetes, hypertension, hyperlipidemia, osteoarthritis, and sleep apnea (Maggard et. al.,2005).\nSocio economic impact of obesity is huge (Andreyeva, Sturm, & Ringel, 2004) as is the personal economic impact of obesity (Laaksonen, Sarlio-Lähteenkorva, & Lahelma, 2004; Rebecca & Brownell, 2001).\nSubstantial research has confirmed that people's weight is a complex function of genetic, behavioural, psychological, and environmental factors. It is difficult to loose weight and even more difficult to maintain the weight loss: the majority of patients regain weight after treatment (Elfhag & Rössner, 2005), but motivational factors seem to be decisive to start a weight loss program and to maintain the weight loss. \nAlthough genetic factors account for substantial variation in obesity, considerable variance remains to be explained by behavioural variables, such as eating and exercise, and by their psychological and environmental determinants. The present study concerns those psychological and environmental determinants.\nThe objective of the present research is to understanding the process by which most individuals adjust to obesity treatment, and it may offer important insights to enhance the efficacy of interventions that facilitate adjustment.\nThe objectives of the present research are:\nTo describe the evolution of weight loss and weight loss maintenance along a three year period; To identify and to describe the predictors of successful weight loss and weight loss maintenance in patients who were morbi  |
Summary
Resumo (em inglês)
Abstract (in english)
\nThe prevalence of obesity is reaching epidemic proportions (Maggard et. al.,2005) and we can find historical trends on obesity in developed countries (McTigue, Garrett, & Popkin, 2002) and in Portugal (Marques-Vidal & Dias, 2005).\nObesity and overweight in adulthood are associated with large decreases in life expectancy and increases in early mortality (Peeters et al. 2003). Consequences of obesity include heart disease, diabetes, hypertension, hyperlipidemia, osteoarthritis, and sleep apnea (Maggard et. al.,2005).\nSocio economic impact of obesity is huge (Andreyeva, Sturm, & Ringel, 2004) as is the personal economic impact of obesity (Laaksonen, Sarlio-Lähteenkorva, & Lahelma, 2004; Rebecca & Brownell, 2001).\nSubstantial research has confirmed that people's weight is a complex function of genetic, behavioural, psychological, and environmental factors. It is difficult to loose weight and even more difficult to maintain the weight loss: the majority of patients regain weight after treatment (Elfhag & Rössner, 2005), but motivational factors seem to be decisive to start a weight loss program and to maintain the weight loss. \nAlthough genetic factors account for substantial variation in obesity, considerable variance remains to be explained by behavioural variables, such as eating and exercise, and by their psychological and environmental determinants. The present study concerns those psychological and environmental determinants.\nThe objective of the present research is to understanding the process by which most individuals adjust to obesity treatment, and it may offer important insights to enhance the efficacy of interventions that facilitate adjustment.\nThe objectives of the present research are:\nTo describe the evolution of weight loss and weight loss maintenance along a three year period; To identify and to describe the predictors of successful weight loss and weight loss maintenance in patients who were morbidly obese; To identify predictors of good adjustment to treatment in patients who were morbidly obese; To compare the quality of life of the patient morbidly obese with normative values of the Portuguese population (for the same age group, and gender)\nVariables in the study\nWe include three group of variables: input variables includes disease variables (weight at the beginning of treatment and severity of obesity, patient perception of severity), demographic variables, (age, educational level, family status, professional status), personality variables; intermediate psychosocial variables includes motivation, hope, positive psychological states, social support, self concept, stigma, adherence; adjustment or outcome variables includes, quality of life, distress (stress, anxiety, depression), weight loss, and weight loss maintaining, satisfaction with treatment, and happiness.\nParticipants\nParticipants includes a sequential sample of 100 patients who were morbidly obese (BMI>40), submitted to surgical, or other treatment\nProcedure\nIt is a longitudinal study with repeated measures. Patients will be assessed in the beginning of treatment for input, intermediate and outcome variables; every 6 months repeated measures of the intermediate and outcome variables will be assessed. The initial assessment will be done at the hospital; the following will take place in the hospital during follow-up encounters or at home in personal contacts with the research team. |