Rodney P. Joseph|Colleen Keller|Marc A. Adams|Barbara E. Ainsworth
Validity of two brief physical activity questionnaires with accelerometers among African-American women
Arizona State University|Arizona State University|Arizona State University|Arizona State University
evaluate validity stanford brief activity survey sbas exercise vital sign evs questionnaire accelerometerdetermined time moderatetovigorous physical activity mvpa among africanamerican aa womenlimited research evaluated validity brief physical activity pa questionnaires among aa women since validity pa questionnaires may differ among members varying racialethnic groups research needed explore validity selfreport pa measures among aa womena total 30 aa women age 355 53 body mass index bmi 311 78 wore actigraph gt3x accelerometers actigraph llc pensacola fl usa seven days completed sbas evs two different assessment periods t1 t2 criterion validity calculated using spearmans rank order correlations questionnaire score accelerometermeasured mvpa sensitivity specificity positive negative predictive values calculated using accelerometermeasured mvpa criterion determine ability questionnaire predict whether participant meeting 2008 us pa guidelinesspearman correlation coefficients questionnaire scores minutes accelerometermeasured mvpa low evs r 027 t1 r 026 t2 sbas r 010 t1 r 028 t2 statistically significant ps 005 evs sensitivity specificity negative positive predictive values 27 89 59 68 t1 33 74 38 70 t2 respectively sbas sensitivity specificity negative positive predictive values 18 79 33 62 t1 67 58 43 79 t2 questionnaires may useful identifying aa women meet 2008 pa guidelines using questionnaires identify aa women meeting pa guidelines done caution