version of the International Physical Activity Questionnaire, long form (IPAQ-LC)

Objective: To investigate the reliability and the validity of the long format, Chinese version of the International Physical Activity Questionnaire (IPAQ-LC). Design: Cross-sectional study, examining the reliability and validity of the IPAQ-LC compared with a physical activity log (PA-log) and objective accelerometry. Setting: Self-reported physical activity (PA) in Hong Kong adults. Subjects: A total of eighty-three Chinese adults (forty-seven males, thirty-six females) were asked to wear an ActiTrainer accelerometer (MTI-ActiGraph, Fort Walton Beach, FL, USA) for.10 h over 7 d, to complete a PA-log at the end of each day and to complete the IPAQ-LC on day 8. On a sub-sample of twenty-eight adults the IPAQ-LC was also administered on day 11 to assess its reliability. Results: The IPAQ-LC had good test–retest reliability for grouped activities, with intra-class correlation coefficients ranging from 0?74 to 0?97 for vigorous, mod-erate, walking and total PA, with between-test effect sizes that were small (,0?49). The Spearman correlation coefficients were statistically significant for vigorous P