Development and validation of psychosocial determinants measures of physical activity among Iranian adolescent girls
- Equal contributors
1 Department of Health Education, Tarbiat Modares University, Tehran, Iran
2 Department of Vital Statistic, Tarbiat Modares University, Tehran, Iran
3 Department of Psychology, Shahed University, Tehran, Iran
BMC Public Health 2008, 8:150 doi:10.1186/1471-2458-8-150Published: 7 May 2008
The present study aimed at assessing the psychometric properties of psychosocial determinants of physical activity-related measures in Iranian adolescent girls.
Several measures of psychosocial determinants of physical activity were translated from English into Persian using the back-translation technique. These translated measures were administered to 512 ninth and tenth-grade Iranian high school students.
The results of a series of factor analysis showed that the self-efficacy scale contained a single factor, the social support scale contained two factors: family support and friend support, the physical activity 'pros & cons' scale contained two factors: physical activity pros scale and physical activity cons scale, the change strategies scale contained a single factor, the environment scale also contained a single factor. Chronbach's alphas, mean inter-item correlations and test-retest coefficients showed that these solutions were reliable.
These preliminary results provide support for using the mentioned scales to measure psychosocial determinants of physical activity in Iranian adolescent girls.