Second, students were asked to quantify the usual amount of time spent participating, which may have been difficult for some to ... Reproducibility and validity of an epidemiologic questionnaire to assess past year physical activity in adolescents. ... Prediction of physical activity level in adulthood by physical characteristics, physical performance and physical activity in ... Physical and sedentary activity in school children grades 5-8: the Bogalusa Heart Study. Med. Sci. Sports Exerc.
|Title||:||Medicine & Science in Sports & Exercise: Volume 33 Number 11 November 2001|