Validation of the Simplified Chinese-character Version of the International Physical Activity Questionnaire-Long Form in Urban Community-dwelling Adults:a Cross-sectional Study in Hangzhou,China

摘要

Objective To assess the test-retest reliability and criterion validity of the Simplified Chinese-character version of the International Physical Activity Questionnaire Long form(IPAQ-L) in urban community-dwelling adults in Hanghzou,China.Methods A total of 158 eligible participants aged 25-59 years from 6 neighbourhoods in two central districts of Hangzhou completed the IPAQ-L questionnaire twice within a 7-day interval.Half of the subjects wore pedometers during the first 7 days.Test-retest reliability was examined by comparing the first(Day 1) and the second(Day 9) survey of IPAQ-L.Criterion validity was assessed by comparing IPAQ-L with pedometer data.Results Modest to good test-retest reliability was found with intraclass correlation coefficients of 0.67 for total PA,0.37 to 0.73 for specific dimensions,and 0.56 to 0.71 for different intensities of PA.Total PA measured by IPAQ-L was moderately correlated with exercise levels(partial r = 0.27,P = 0.020) and walking distance(partial r = 0.31,P = 0.007),which were measured by a pedometer,after adjusting for gender,age,educational attainment and employment status.Conclusion Our results indicate that the IPAQ-L is a reliable and validated measure for assessing physical activity levels in this population and possibly the adult population in other mainland Chinese cities.