the purpose of this study was to assess the nutritional condition and correlation between daily physical activity and obesity in 11-year old girls. the subjects were 325 11-year old students with different cultural-economical levels who were chosen by chance and then they fill out 7-day exercise, nutritional, tendency of physical activity in children and teenagers questionnaire by the help of t...

abstract background: to determine daily calcium, vitamin d intake and serum biochemical findings of rickets in adolescent girls. methods: a total of 414 healthy adolescent student girls aged 11-15 years were evaluated from various areas of tehran, iran with different socioeconomic status. a randomized, cross-sectional, prospective and descriptive study was undertaken for calculation of daily ca...