title: Adapting the Pregnancy Physical Activity Questionnaire for Japanese pregnant women.
abstract: OBJECTIVE
  To assess the psychometric properties of the Pregnancy Physical Activity Questionnaire (PPAQ) for women who read and speak Japanese.
  
  
  METHODS
  This longitudinal study used a self-report questionnaire and quantitative biometric and instrumental measurements (actigraph) to assess the reliability and criterion validity.
  
  
  METHODS
  A university hospital in Tokyo, Japan.
  
  
  METHODS
  Sixty-nine pregnant women living in Tokyo and its suburbs were recruited.
  
  
  METHODS
  The test-retest reliability of the Japanese version of the Pregnancy Physical Activity Questionnaire (PPAQ-J) was evaluated through intraclass correlation coefficients (ICCs) between PPAQ-J results administered three times (at recruitment, 7 and 14 days later). Criterion validity was assessed by comparing results to actigraph measures using Spearman's correlation coefficients. Participants wore the actigraph over the 2-week research period. Data from 58 participants were analyzed for test-retest reliability. The data of 54 participants were used to analyze criterion validity.
  
  
  RESULTS
  The ICCs for the first and second and for the first and third PPAQ-J questionnaires were ≥0.56 for total activity and activities broken down by intensity and type (in metabolic equivalents [METs] × hours/day). To evaluate criterion validity, Spearman's correlation coefficients were calculated between the first measurement of the PPAQ-J and three published cut-points used to classify actigraph data (minutes/day); correlations ranged from .02 to .35 for total activity, -.21 to -.25 for vigorous activity, -.09 to .38 for moderate activity, and .01 to .28 for light activity.
  
  
  CONCLUSIONS
  The PPAQ-J is a psychometrically sound and comprehensive measure of physical activity in pregnant Japanese women.
authors.forename: Masayo
authors.initials: M
authors.lastname: Matsuzaki
authors.forename: Megumi
authors.initials: M
authors.lastname: Haruna
authors.forename: Kae
authors.initials: K
authors.lastname: Nakayama
authors.forename: Mie
authors.initials: M
authors.lastname: Shiraishi
authors.forename: Erika
authors.initials: E
authors.lastname: Ota
authors.forename: Ryoko
authors.initials: R
authors.lastname: Murayama
authors.forename: Sachiyo
authors.initials: S
authors.lastname: Murashima
authors.forename: SeonAe
authors.initials: S
authors.lastname: Yeo
mesh_terms: D000328:Adult; D015444:Exercise; D005260:Female; D006801:Humans; D007564:Japan; D008137:Longitudinal Studies; D009043:Motor Activity; D017063:Outcome Assessment, Health Care / Q000379:methods*; D011247:Pregnancy; D011594:Psychometrics / Q000379:methods*; D015203:Reproducibility of Results; D057566:Self Report; D011795:Surveys and Questionnaires / Q000592:standards*
keywords: longitudinal study; motor activity; pregnancy; questionnaire; reproducibility