This report was written in order to find out if the current and previous implemented smoking bans have had effect on the smoking behaviour of Dutch citizens and the citizens of the state of California and to see to what extent they had effect. In order to find out what the effects were of the smoking …

Physical exercise education in overweight and obese patients not only requires knowledge of physical exercise programs, but also knowledge of psychological processes such as cognitions that may hamper adherence to the exercise program and knowledge of social processes, e.g., consciousness of the stigma …

Background Physical activity after bariatric surgery is associated with sustained weight loss and improved quality of life. Some bariatric patients engage insufficiently in physical activity. The aim of this study was to examine whether and to what extent both physical activity and exercise cognitions …

Physical exercise education in overweight and obese patients not only requires knowledge of physical exercise programs, but also knowledge of psychological processes such as cognitions that may hamper adherence to the exercise program and knowledge of social processes, e.g., consciousness of the stigma …

De studies in dit proefschrift onderzochten cognitieve en emotionele factoren die een goede gewichtsuitkomst na bariatrische chirurgie bevorderen of belemmeren. Vrijwel alle variabelen, inclusief de psychologische, laten vóór operatie een veel slechtere toestand zien dan ná operatie. Dit wijst erop dat …

Background Physical activity after bariatric surgery is associated with sustained weight loss and improved quality of life. Some bariatric patients engage insufficiently in physical activity. This may be due to exercise cognitions, i.e., specific beliefs about benefits of and barriers to physical exercise. …

To examine the association of adolescents' snack and soft drink consumption with friendship group snack and soft drink consumption, availability of snacks and soft drinks at school, and personal characteristics, snack and soft drink consumption was assessed in 749 adolescents (398 girls, 351 boys, age …

Background: Depression and being overweight are correlated health problems in adulthood. Adolescence is a significant period for the onset and increase of depression and obesity, especially among girls. Pubertal development also occurs with concomitant increases in weight. Thus, it is not yet clear whether …

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Obesity, especially morbid obesity, is a major health problem with considerable impact on physical, mental and social quality of life. Assessment of quality of life is considered crucial to understand and evaluate the consequences of obesity. Obesity has major consequences for quality of life, e.g., …