title: The Psychometric Characteristics of the Exercise Benefits/Barriers Scale among Iranian Elderly.
abstract: BACKGROUND
  The objective of this study was to investigate the validity and reliability of the Farsi version of the perceived benefits/barriers scale of physical activity in Iranian elderly.
  
  
  METHODS
  Overall, 388 elderly subjects (60 yr and over) completed the demographic characteristics questionnaire, the Exercise Benefits/Barriers Scale (EBBS) and the Yale physical activity scale. Data were analyzed through of exploratory factor analysis, using Varimax rotation, Cronbach's alpha and Pearson correlation.
  
  
  RESULTS
  The matrix table of rotated elements of Farsi version of EBBS showed ten components, and 41 items predicted 61.83% of variance. 28 items in 5 components for benefits of, and 13 items in 5 components for barriers to physical activity were identified. Cronbach's alpha for internal consistency in the whole scale and its subscales was 0.83, 0.94 and 0.68. In addition, positive and significant correlation was found between overall benefits and their sub-scales as well as between overall barriers and their subscales. Moreover, there was significant and positive correlation between physical activity and the benefits (r=0.209, P=0.005) and significant negative correlation between physical activity and the barriers (r=-0.231, P=0.001).
  
  
  CONCLUSIONS
  The results showed acceptable reliability and validity of the Farsi version of Exercise Benefits/Barriers Scale among Iranian elderly.
authors.affiliation: 1. Clinical Educational Group, University of Social Welfare and Rehabilitation Sciences, Iranian Research Center on Aging , Tehran, Iran.
authors.forename: Ahmad Ali
authors.initials: AA
authors.lastname: Akbari Kamrani
authors.affiliation: 1. Clinical Educational Group, University of Social Welfare and Rehabilitation Sciences, Iranian Research Center on Aging , Tehran, Iran.
authors.forename: Seyed Hojjat
authors.initials: SH
authors.lastname: Zamani Sani
authors.affiliation: 2. Dept. of Motor Behavior, University of Shahid Beheshti , Tehran, Iran.
authors.forename: Zahra
authors.initials: Z
authors.lastname: Fathire-Zaie
authors.affiliation: 3. Dept. of Sport Management, University of Tehran , Tehran, Iran.
authors.forename: Mahdi
authors.initials: M
authors.lastname: Bashiri
authors.affiliation: 2. Dept. of Motor Behavior, University of Shahid Beheshti , Tehran, Iran.
authors.forename: Ebrahim
authors.initials: E
authors.lastname: Ahmadi
keywords: Aging; Barriers; Benefits; Exercise; Physical activity