%0 Journal Article
%T Comparative validation of the IPAQ and the 7-Day PAR among women diagnosed with breast cancer
%A Marilyn Johnson-Kozlow
%A James F Sallis
%A Elizabeth A Gilpin
%A Cheryl L Rock
%A John P Pierce
%J International Journal of Behavioral Nutrition and Physical Activity
%D 2006
%I BioMed Central
%R 10.1186/1479-5868-3-7
%X 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.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.The PAR was superior to the IPAQ in terms of validity, measurement bias, and screening statistics.Many physical activity self-report measures have been developed [1-3] but few studies have compared the performance of different measures [4]. When new measures are developed, it is particularly useful to compare their psychometric properties to well-established measures in similar samples. Two self-report measures designed to assess overall physical activity examined in the present study were the 7-Day Physical Activity Recall (or PAR) [5,6] and the recently-introduced International Physical Activity Questionnaire (or IPAQ) [7].The PAR [5] has been validated in a number of studies [3] and the purpose of the present study was to compare its criterion-related validity and measurement bias to the long form of the IPAQ. The two self-report instruments (PAR and IPAQ) were validated by comparing their physical activity estimates to those obtained from an objective physical activity accelerometer; the psychometric properties of the two self-report instruments were then compared. As both the PAR and IPAQ were designed to assess physical activity in all domains (occupation, recreation, travel, and housework) over the past 7 days and have similar administration durations, the comparison of the newly-developed IPAQ against the often-used PAR was wa
%U http://www.ijbnpa.org/content/3/1/7