Reliability and Validity of the Adapted Persian Version of the Physical Activity Scale for Individuals With Physical Disabilities

Objectives: the main objective of this study was to culturally adapt the original englishversion of the physical activity scale for individuals with physical disabilities (pasipd)for the persian-speaking patients with lower-limb amputations (llas) and to evaluate itsreliability and construct validity.methods: this research was a multicenter cross-sectional and repeated measure study. thecultural adaptation process was conducted according to an accepted international guideline. atotal of 197 persian-speaking individuals with lla were recruited to investigate the reliabilityand validity of the pasipd. reliability analyses were assessed by cronbach α and the pearsonproduct-moment correlation coefficient. the association between the pasipd scores andthe prosthetic limb user survey of mobility scores was examined to evaluate the convergentvalidity of the pasipd. known-groups validity was assessed based on sex, amputation causes,and amputation levels.results: the pasipd had an acceptable internal uniformity (the cronbach α of 0.68) andtest-retest reproducibility (r=0.70). there was a small correlation between the pasipdand prosthetic limb user mobility survey (r=0.26; p<0.001). some items of pasipd coulddiscriminate individuals with different causes of amputation and sex. factor analysis extractedfour main factors that explained 65.4% of the variance.discussion: the persian version of the pasipd has acceptable reliability and validity forassessing the physical activity of persons with llas.