Home Current Issue Previous Issues Published Ahead-of-Print Collections For Authors Journal Info
Skip Navigation LinksHome > December 2010 - Volume 42 - Issue 12 > Validity of a Physical Activity Questionnaire in Shanghai
Medicine & Science in Sports & Exercise:
doi: 10.1249/MSS.0b013e3181e1fcd5
Basic Sciences

Validity of a Physical Activity Questionnaire in Shanghai

PETERS, TRICIA M.1,2; SHU, XIAO-OU3; MOORE, STEVEN C.1; XIANG, YONG BING4; YANG, GONG3; EKELUND, ULF2; LIU, DA-KE4; TAN, YU-TING4; JI, BU-TIAN1; SCHATZKIN, ARTHUR S.1; ZHENG, WEI3; CHOW, WONG HO1; MATTHEWS, CHARLES E.1; LEITZMANN, MICHAEL F.5

Collapse Box

Abstract

Purpose: In large epidemiologic studies, physical activity (PA) is often assessed using PA questionnaires (PAQ). Because available PAQ may not capture the full range of PA in which urban Chinese adults engage, a PAQ was developed for this purpose. We examined the validity of this PAQ and the 1-yr stability of PA in 545 urban Shanghai adults.

Methods: The PAQ was interview-administered twice, approximately 1 yr apart, and participants also wore an accelerometer and completed a PA-log for seven consecutive days every 3 months during the same year. The intraclass correlation coefficient (ICC) was used to evaluate the stability of PA across questionnaire administrations, and Spearman correlation coefficients (ρ) and mean differences and 95% limits of agreement were used to examine the validity of the questionnaire compared against accelerometry and the PA-log.

Results: When measured by accelerometry, estimates of time spent in moderate-to-vigorous PA were lower and estimates of time spent sedentary were higher than when self-reported on the PAQ (P < 0.001). Total PA (ICC = 0.65) and PA domains (ICC = 0.45-0.85) showed moderate to high stability across PAQ administrations. Total PA (ρ = 0.30), moderate-to-vigorous activity (ρ = 0.17), light activity (ρ = 0.36), and sedentary behavior (ρ = 0.16) assessed by PAQ and by accelerometry were significantly and positively correlated, and correlations of the PAQ with the PA-log (ρ = 0.36-0.85) were stronger than those observed with accelerometry.

Conclusions: The PAQ significantly overestimated time spent in moderate-to-vigorous activity and underestimated time spent in light activity and sedentary behavior compared with accelerometry, but it performed well at ranking participants according to PA level.

©2010The American College of Sports Medicine

Login

Article Tools

Share

Search for Similar Articles
You may search for similar articles that contain these same keywords or you may modify the keyword list to augment your search.

Connect With Us