Comparative validation of the IPAQ and the 7-Day PAR among women diagnosed with breast cancer.
BACKGROUND
The criterion-related validity and measurement bias of the long form of the International Physical Activity Questionnaire (IPAQ) was compared to the 7-Day Physical Activity Recall (PAR).


METHODS
Participants were women who have been diagnosed with breast cancer and enrolled in the ongoing Women's Healthy Eating and Living Study. Women (N = 159, average age 57 years) wore an accelerometer for one week and then completed the IPAQ or the PAR.


RESULTS
The validity correlation of the PAR was significantly higher (p < 0.001) than the IPAQ (0.73 vs. 0.33, respectively). The PAR and IPAQ overestimated total physical activity by 13% vs. 247%, respectively. The PAR had better sensitivity (p = 0.14) and specificity (p < .01) than the IPAQ (100% vs. 71% and 84% vs. 59%, respectively) in predicting attainment of the ACSM physical activity guideline.


CONCLUSIONS
The PAR was superior to the IPAQ in terms of validity, measurement bias, and screening statistics.
San Diego State University Research Foundation, 9245 Sky Park Court, San Diego, CA 92123, USA. mfjohnson@projects.sdsu.edu
Marilyn
M
Johnson-Kozlow
James F
JF
Sallis
Elizabeth A
EA
Gilpin
Cheryl L
CL
Rock
John P
JP
Pierce