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OBJECTIVE To study predictors of fruit intake in a sample of 627 adults. DESIGN Potential predictors of fruit intake were assessed at baseline, and fruit intake was assessed at two-week follow-up with self-administered questionnaires distributed by e-mail. SETTING The study was conducted among Dutch adult members of an Internet research panel. (More)
OBJECTIVE The present study examined (1) whether respondents who were encouraged to make implementation intentions to eat more fruit increased their fruit intakes, as measured by three measures of fruit intake; (2) whether the effects of implementation intentions on fruit intake were dependent on positive goal intentions at baseline; and (3) the(More)
BACKGROUND Cardiovascular diseases are caused by multiple behavioral factors, including different dietary factors. We examined to what extent fruit, vegetable and fish consumption are related, and whether behavioral determinants vary across these dietary behaviors from a Transtheoretical model perspective. METHODS Data were collected among 1142(More)
BACKGROUND Applying self-regulation strategies have proven important in eating behaviors, but it remains subject to investigation what strategies adolescents report to use to ensure healthy eating, and adequate measures are lacking. Therefore, we developed and validated a self-regulation questionnaire applied to eating (TESQ-E) for adolescents. METHODS(More)
Self-control relies on a limited resource that can get depleted, a phenomenon that has been labeled ego-depletion. We argue that individuals may differ in their sensitivity to depleting tasks, and that consequently some people deplete their self-control resource at a faster rate than others. In three studies, we assessed individual differences in depletion(More)
OBJECTIVE The aim of the current study was to evaluate the effects of and adherence to an active video game promotion intervention on anthropometrics, sedentary screen time and consumption of sugar-sweetened beverages and snacks among non-active video gaming adolescents who primarily were of healthy weight. METHODS We assigned 270 gaming (i.e. ≥ 2(More)
An extensive body of research exists on environmental influences on weight-related behaviours in young people. Existing reviews aimed to synthesize this body of work, but generally focused on specific samples, behaviours or environmental influences and integration of findings is lacking. Hereto, we reviewed 18 reviews representing 671 unique studies, aiming(More)
PURPOSE To examine associations between decisional balance, self-efficacy, fruit intake, and stage of change transition from precontemplation and contemplation with cross-sectional and longitudinal methods. DESIGN A longitudinal cohort study with the use of electronic questionnaires was conducted. Three measurements were analyzed cross-sectionally, and(More)
OBJECTIVES While healthy eating patterns are of high importance in adolescence, most adolescents portray quite unhealthy eating behaviour. One reason for this may be that social norms among peers tend to be unsupportive of healthy eating. The current study investigates whether communicating health-promoting descriptive and injunctive norms influences(More)
BACKGROUND Pricing strategies are an important component in the marketing mix and may also be useful in stimulating healthier food choices. However, due to competing interests and feasibility problems, the introduction of pricing strategies is complicated. For successfully introducing food pricing strategies, it is essential to explore incentives that are(More)