title: Development and validation of psychosocial determinants measures of physical activity among Iranian adolescent girls.
abstract: BACKGROUND
  The present study aimed at assessing the psychometric properties of psychosocial determinants of physical activity-related measures in Iranian adolescent girls.
  
  
  METHODS
  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.
  
  
  RESULTS
  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.
  
  
  CONCLUSIONS
  These preliminary results provide support for using the mentioned scales to measure psychosocial determinants of physical activity in Iranian adolescent girls.
authors.affiliation: Department of Health Education, Tarbiat Modares University, Tehran, Iran. pirasteh2002@yahoo.com
authors.forename: Ashraf
authors.initials: A
authors.lastname: Pirasteh
authors.forename: Alireza
authors.initials: A
authors.lastname: Hidarnia
authors.forename: Ali
authors.initials: A
authors.lastname: Asghari
authors.forename: Soghrate
authors.initials: S
authors.lastname: Faghihzadeh
authors.forename: Fazlollah
authors.initials: F
authors.lastname: Ghofranipour
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior / Q000523:psychology*; D015444:Exercise / Q000523:psychology*; D005163:Factor Analysis, Statistical; D005190:Family / Q000523:psychology; D005260:Female; D033062:Friends / Q000523:psychology; D006801:Humans; D007492:Iran; D011594:Psychometrics; D015203:Reproducibility of Results; D020377:Self Efficacy; D012944:Social Support; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires