BACKGROUND Adults spend the majority of their time being sedentary, and evidence suggests that those who spend more of their day engaged in sedentary activities (TV viewing, sitting, screen-based activities) are at increased risk for morbidity and mortality, regardless of whether they exercise regularly. In order to develop effective interventions to reduce sedentary time, it is necessary to id...

BACKGROUND AND OBJECTIVE Adolescents are frequent media users who access health claims from various sources. The plethora of conflicting, pseudo-scientific, and often misleading health claims in popular media makes critical appraisal of health claims an essential ability. Schools play an important role in educating youth to critically appraise health claims. The objective of this systematic rev...

extended abstract 7-4

abstracts submited for iranian congress of gastroenterology and hepatology - icgh 2010 9-12 november 2010â  milad hospital tehran, iran

Formal operational stage differs from the previous stages due to the newly acquired ability to think in abstract terms and form hypotheses based on propositions (Inhelder & Piaget, 1958). As the adolescent progresses from early to late stage of development, the knowledge structure becomes more and more integrated in structure. Present study hypothesized that the ability to reason in abstract te...

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abstracts submited for iranian congress of gastroenterology and hepatology - icgh 2012 28-30 november 2012 tehran, iran