title: Reliability and validity of the Modifiable Activity Questionnaire (MAQ) in an Iranian urban adult population.
abstract: BACKGROUND
  The purpose of this study is to evaluate the validity and reliability of a Persian translation of the Modifiable Activity Questionnaire (MAQ) in a sample of adults from Tehran, Iran.
  
  
  METHODS
  There were 48 adults (53.1% males) enrolled to test the physical activity questionnaire. A sub-sample included 33 participants (45.5% males) who assessed the reliability of the physical activity questionnaire.The validity was tested in 25 individuals (48.0% males). The reliability of  two MAQs was calculated by intraclass correlation coefficients. The validation study was evaluated with the Spearman correlation coefficients to compare data between the means of 2 MAQs and the means of 4 physical activity records.
  
  
  RESULTS
  Intraclass correlation coefficients between 2 MAQs for the previous year's leisure time was 0.94; for occupational, it was 0.98; and for total (leisure and occupational combined) physical activity, it was 0.97. The Spearman correlation coefficients between the means of the 2 MAQs and means of the 4 physical activity records was 0.39 (P = 0.05) for leisure time, 0.36 (P = 0.07) for occupational, and 0.47 (P = 0.01) for total (leisure and occupational combined) physical activities.
  
  
  CONCLUSIONS
  High reliability and relatively moderate validity were found for the Persian translated MAQ in adults from Tehran. However, further studies with larger sample sizes are suggested to more precisely assess the validity of the MAQ.
authors.affiliation: Prevention of Metabolic Disorders Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Amir Abbas
authors.initials: AA
authors.lastname: Momenan
authors.forename: Maryam
authors.initials: M
authors.lastname: Delshad
authors.forename: Narges
authors.initials: N
authors.lastname: Sarbazi
authors.forename: Nasrollah
authors.initials: N
authors.lastname: Rezaei Ghaleh
authors.forename: Arash
authors.initials: A
authors.lastname: Ghanbarian
authors.forename: Fereidoun
authors.initials: F
authors.lastname: Azizi
mesh_terms: D000328:Adult; D006801:Humans; D007492:Iran; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D014505:Urban Population