ساخت و اعتبار يابي مقياس هاي سنجش عوامل رواني اجتماعي موثر بر فعاليت جسماني دختران دبيرستاني منطقه 10 شهر تهران

Evaluation of standards measuring psycho-social factors effective on physical activities of high-school girl-students at Tehran branch No:10

Introduction: The present study aimed to assess the psycho-metric properties of psycho-social determinants of physical activity-related measures in Iranian teen-ager girl s. Several measures of psychosocial determinants of physical activities were translated from English into Persian using the retransJation technique. These tran slated mea sures were administered to 512 of 9 th and 10ʹhgrade Iranian high school students. Materials & methods: The scales included , the self-efficacy scale , the social support scale, the physical activity "pros & cons" scale, the change strategies scale and the environment scale. Cronbachs alphas, mean inter-item corr elations and test-retest coefficients showed that these solutions were reliabl e. Cronbachʹs alphas estimates for the var ious scale s were substantial to excellent (0.67-0.84), while test-retest reliability estimates were substantial (0.59-0.74) and mean inter- item correlation estimates were also fair to substantial (0.23 -0.47). Conclusion: These preliminary results pro vide support for using the mentioned scal es to measure psychosocial determinants of physical activities in Iranian female teen -agers.