لینک پرداخت و دانلود *پایین مطلب * فرمت فایل :Word ( قابل ویرایش و آماده پرینت ) تعداد صفحه15 Physical Activity and Bone Measures in Young Children Received Aug 14, 2000; accepted Nov 20, 2000. Physical activity has a beneficial effect on bone development in circumpubertal children, although its effect on younger children is uncertain. In this cross-sectional study, we examined associations between physical activity and bone measures in 368 preschool children (mean age: 5.2 years, range: 4-6 years). Physical activity was measured using 4-day accelerometry readings, parental report of children's usual physical activity , and parental report of children's hours of daily television viewing. Total body and site-specific bone mineral content and area bone mineral density (BMD) were measured by dual energy radiograph absorptiometry. Results. After adjustment for age and body size, accelerometry measures of physical activity an ...
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پنجشنبه 23 خرداد 1398 ساعت 11:33