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

The present study aimed to assess the psycho-metric properties of psycho-social determinants of physical activity-related measures in Iranian teen-ager girls. Several measures of psychosocial determinants of physical activities were translated from English into Persian using the retranslation technique. These translated measures were administered to 512 of 9th and 10th grade Iranian high school students. 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. Cronbach’s alphas, mean inter–item correlations and test-retest coefficients showed that these solutions were reliable. Cronbach’s alphas estimates for the various scales 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). These preliminary results provide support for using the mentioned scales to measure psychosocial determinants of physical activities in Iranian female teen-agers.