title: Reliability and relative validity of three physical activity questionnaires in Taizhou population of China: the Taizhou Longitudinal Study.
abstract: OBJECTIVE
  To examine the test-retest reliabilities and relative validities of the Chinese version of short International Physical Activity Questionnaire (IPAQ-S-C), the Global Physical Activity Questionnaire (GPAQ-C), and the Total Energy Expenditure Questionnaire (TEEQ-C) in a population-based prospective study, the Taizhou Longitudinal Study (TZLS).
  
  
  METHODS
  A longitudinal comparative study.
  
  
  METHODS
  A total of 205 participants (male: 38.54%) aged 30-70 years completed three questionnaires twice (day one and day nine) and physical activity log (PA-log) over seven consecutive days. The test-retest reliabilities were evaluated using intra-class correlation coefficients (ICCs) and the relative validities were estimated by comparing the data from physical activity questionnaires (PAQs) and PA-log.
  
  
  RESULTS
  Good reliabilities were observed between the repeated PAQs. The ICCs ranged from 0.51 to 0.80 for IPAQ-C, 0.67 to 0.85 for GPAQ-C, and 0.74 to 0.94 for TEEQ-C, respectively. Energy expenditure of most PA domains estimated by the three PAQs correlated moderately with the results recorded by PA-log except the walking domain of IPAQ-S-C. The partial correlation coefficients between the PAQs and PA-log ranged from 0.44 to 0.58 for IPAQ-S-C, 0.26 to 0.52 for GPAQ-C, and 0.41 to 0.72 for TEEQ-C, respectively. Bland-Altman plots showed acceptable agreement between the three PAQs and PA-log.
  
  
  CONCLUSIONS
  The three PAQs, especially TEEQ-C, were relatively reliable and valid for assessment of physical activity and could be used in TZLS.
authors.affiliation: MOE Key Laboratory of Contemporary Anthropology and State Key Laboratory of Genetic Engineering, School of Life Sciences and Institutes of Biomedical Sciences, Fudan University, Shanghai, People's Republic of China; CMC Institute of Health Sciences, Taizhou, Jiangsu, People's Republic of China. Electronic address: paul.binhu@gmail.com.
authors.forename: B
authors.initials: B
authors.lastname: Hu
authors.affiliation: MOE Key Laboratory of Contemporary Anthropology and State Key Laboratory of Genetic Engineering, School of Life Sciences and Institutes of Biomedical Sciences, Fudan University, Shanghai, People's Republic of China; CMC Institute of Health Sciences, Taizhou, Jiangsu, People's Republic of China. Electronic address: lanfanglin9020@gmail.com.
authors.forename: L F
authors.initials: LF
authors.lastname: Lin
authors.affiliation: Clinical Epidemiology Unit, Qilu Hospital of Shandong University, Ji'nan, Shandong, People's Republic of China. Electronic address: xqq23678@gmail.com.
authors.forename: M Q
authors.initials: MQ
authors.lastname: Zhuang
authors.affiliation: CMC Institute of Health Sciences, Taizhou, Jiangsu, People's Republic of China. Electronic address: yuanziyu0502@gmail.com.
authors.forename: Z Y
authors.initials: ZY
authors.lastname: Yuan
authors.affiliation: MOE Key Laboratory of Contemporary Anthropology and State Key Laboratory of Genetic Engineering, School of Life Sciences and Institutes of Biomedical Sciences, Fudan University, Shanghai, People's Republic of China; CMC Institute of Health Sciences, Taizhou, Jiangsu, People's Republic of China. Electronic address: shuyuanli816@gmail.com.
authors.forename: S Y
authors.initials: SY
authors.lastname: Li
authors.affiliation: MOE Key Laboratory of Contemporary Anthropology and State Key Laboratory of Genetic Engineering, School of Life Sciences and Institutes of Biomedical Sciences, Fudan University, Shanghai, People's Republic of China; CMC Institute of Health Sciences, Taizhou, Jiangsu, People's Republic of China. Electronic address: yyj229@263.net.
authors.forename: Y J
authors.initials: YJ
authors.lastname: Yang
authors.affiliation: Clinical Epidemiology Unit, Qilu Hospital of Shandong University, Ji'nan, Shandong, People's Republic of China. Electronic address: lu.ming528@gmail.com.
authors.forename: M
authors.initials: M
authors.lastname: Lu
authors.affiliation: Institute of Public Health, Fudan University, Shanghai, People's Republic of China. Electronic address: szyu@shmu.edu.cn.
authors.forename: S Z
authors.initials: SZ
authors.lastname: Yu
authors.affiliation: MOE Key Laboratory of Contemporary Anthropology and State Key Laboratory of Genetic Engineering, School of Life Sciences and Institutes of Biomedical Sciences, Fudan University, Shanghai, People's Republic of China; CMC Institute of Health Sciences, Taizhou, Jiangsu, People's Republic of China. Electronic address: ljin007@gmail.com.
authors.forename: L
authors.initials: L
authors.lastname: Jin
authors.affiliation: Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden. Electronic address: weimin.ye@ki.se.
authors.forename: W M
authors.initials: WM
authors.lastname: Ye
authors.affiliation: MOE Key Laboratory of Contemporary Anthropology and State Key Laboratory of Genetic Engineering, School of Life Sciences and Institutes of Biomedical Sciences, Fudan University, Shanghai, People's Republic of China; CMC Institute of Health Sciences, Taizhou, Jiangsu, People's Republic of China. Electronic address: xiaofengautomatic@gmail.com.
authors.forename: X F
authors.initials: XF
authors.lastname: Wang
mesh_terms: D000328:Adult; D000368:Aged; D002681:China; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires
keywords: PA-log; PAQ; Relative validity; Reliability; The Taizhou Longitudinal Study