title: Introducing an Outcome Expectation Questionnaire and Its Psychometric Properties Regarding Leisure Time Physical Activity for Iranian Male Adolescent.
abstract: BACKGROUND
  Outcome expectation (OE) is known as a psychosocial determinant of leisure time physical activity (LTPA). Despite importance of this construct evaluation, there is no evidence of special questionnaire for measuring OE in Persian speaking Iranian male adolescents.
  
  
  OBJECTIVE
  This article reports development and psychometric evaluation process of a specific questionnaire that evaluates OE about LTPA among Iranian male adolescents.
  
  
  METHODS
  Literature review and group discussions were used to select 26 items of this questionnaire based on 3 dimensions of OE (self-evaluation, social expectancy, and physical expectancy). All Participants (n = 720) were divided into two groups randomly after evaluating comprehensibility, face and content validity, and items analysis. Exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were separately operated on one of these groups for evaluation of the construct validity of questionnaire. The reliability of the questionnaire was estimated by the Cronbach α.
  
  
  RESULTS
  EFA extracted 3 main factors explained 45.80%, 10.31%, and 7.51% of OE variance, respectively. Almost all fit indexes in CFA were acceptable (CMIN = 107.39, CMIN/DF = 2.619, CFI = 0.938, PCFI = 0.699, RMSEA = 0.067, PCLOSE = 0.034). Finally 11 items remained in the questionnaire, which showed excellent reliability on main study (α = 0.85).
  
  
  CONCLUSIONS
  This study provided evidence regarding the reliability and validity of the Iranian male adolescent outcome expectation about leisure time physical activity (IMAO-PAC) and illustrated that this new questionnaire can be used to measure the perceived exercise benefits among target group in observational and interventional studies.
authors.affiliation: Department of Health Education and Promotion, School of Public Health, Isfahan University of Medical Sciences, Isfahan, IR Iran.
authors.forename: Mohammad Hadi
authors.initials: MH
authors.lastname: Abasi
authors.affiliation: Department of Health Education and Promotion, School of Public Health, Isfahan University of Medical Sciences, Isfahan, IR Iran.
authors.forename: Ahmad Ali
authors.initials: AA
authors.lastname: Eslami
authors.affiliation: Department of Health Education and Promotion, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran.
authors.forename: Fatemeh
authors.initials: F
authors.lastname: Rakhshani
keywords: Adolescent; Cognition; Exercise; Iran; Questionnaires; Reproducibility of Results