Agreement Between the IPAQ and Accelerometer for Detecting Intervention-Related Changes in Physical Activity in a Sample of Latina Women

in Journal of Physical Activity and Health
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Background:

Even when objective physical activity (PA) measures are preferred, many intervention studies with Latina women rely on self-reports because they are more feasible and the type and domain of PA is of interest.

Purpose:

This study examined the sensitivity and specificity of the IPAQ for detecting intervention-related changes in physical activity compared with accelerometer measurement among Latinas.

Methods:

In March 2007, a community sample of 94 women (mean age = 36.31 ± 9.1 yr; mean body mass index = 31.37 ± 7.13) participated in a 12-week pedometer-based intervention to increase moderate intensity physical activity (MPA). Participants completed the Spanish-language International Physical Activity Questionnaire (Sp-IPAQ; telephone, long form) and wore an Actigraph accelerometer for 7 days at baseline and postintervention.

Results:

Both the IPAQ and the ActiGraph accelerometer detected intervention-related increases in MPA; however, these changes were largely uncorrelated. The IPAQ did not have acceptable level of sensitivity and specificity before and after the intervention when compared with objective assessments.

Conclusions:

Data suggest that it is important to improve the sensitivity and specificity of the IPAQ with Spanish-speaking participants and further research is needed to accurately measure intervention effectiveness using self-reports of PA in Latinas.

Nicaise is with Laboratory CRIS, University of Lyon 1, France. Crespo is with the Graduate School of Public Health, San Diego State University, San Diego, CA. Marshall is with the Dept of Family and Preventive Medicine, University of California, San Diego, CA.

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