The Persian, Last 7-day, Long form of the International Physical Activity Questionnaire: Translation and Validation Study

Purpose: to translate long form, interview-administered international physical activity questionnaire (ipaq) from english to persian and evaluate its validity, reliability and reproducibility. methods: a forward-backward translation procedure was followed to develop the persian version of the ipaq. a total of 218 respondents (53.7% women, aged 22–76 yr) completed the persian version in tehran, iran. to examine the test–retest reliability, 48 healthy volunteers completed the ipaq twice during a 7-day period. . the pa indicators derived from the ipaq were assessed for reliability and were compared with aerobic fitness and body mass index (bmi) for construct validity. results: in general, the questionnaire was received well and all domains met the minimum reliability standards (intra-class correlation [icc]> 0.7), except for leisure-time physical activity (pa). aerobic fitness showed a weak positive correlation with all of the pa results derived from the ipaq. a significant correlation was observed between the ipaq data for total pa and both aerobic fitness (r=0.33, p<0.001) and bmi (r=0.26, p<0.001). performing a known group comparison analysis, the results indicated that the questionnaire was discriminated well between the subgroups of the study samples expected to be different in their physical activity. conclusions: the persian version of the long form, interviewadministered ipaq had an acceptable reliability and validity for assessing total pa in our iranian sample of individuals. it may be a useful instrument for generating internationally comparable data on pa.