Validity of the Duke Activity Status Index (DASI) and General Practice Physical Activity Questionnaire (GPPAQ) Walking Pace Question in Chinese and British Hemodialysis Patients

Background Exercise capacity is a strong predictive factor of mortality in hemodialysis patients. Hence, it is urgently needed to explore convenient and effective assessment tools to evaluate exercise capacity. Objective To validate the Duke Activity Status Index (DASI) and General Practice Physical Activity Questionnaire (GPPAQ) walking pace question in Chinese and British hemodialysis patients. Methods From January 2018 to September 2020, 40 hemodialysis patients from a Chinese tertiary hospital and 39 patients from Leicester Renal Network in the United Kingdom were assessed exercise capacity and walking speed using DASI and GPPAQ walking pace question, respectively. Meanwhile, the shuttle walking test (SWT) and gait speed test in short physical performance battery (SPPB) were conducted with the two cultural groups to validate the DASI and the GPPAQ walking pace question. The validity of DASI was tested by correlation analysis, and the validity test of GPPAQ pace problem was by analysis of variance, respect