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Visualization of Intensity Levels to Reduce the Gap Between Self-Reported and Directly Measured Physical Activity

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Reported physical activity and sedentary behavior: why do you ask?

Richard P Troiano¹, Kelley K Pettee Gabriel, Gregory J Welk

¹Division of Cancer Control and Population Sciences, National Cancer Institute, Bethesda, MA, USA.

Journal of Physical Activity & Health

|January 31, 2012

Summary

Self-report measures remain valuable for assessing physical activity and sedentary behavior. Optimizing their use involves understanding measurement constructs and considering combined approaches with device-based monitoring.

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Area of Science:

Behavioral science
Epidemiology
Measurement science

Background:

Device-based measures challenge the utility of self-report for physical activity and sedentary behavior.
A 2010 workshop affirmed the value of self-report methods for behavior assessment.

Purpose of the Study:

Optimize self-reported physical activity and sedentary behavior measures.
Define measurable constructs for devices and self-reports.
Develop a framework for selecting assessment approaches.
Explore combining self-report and device-based monitoring.

Main Methods:

Consensus reached on material presented after a workshop breakout session.
Synthesis of ideas regarding the measurement of active and sedentary behaviors.

Main Results:

Self-report and device-based measures capture different constructs of physical activity and sedentary behavior.
A decision-making framework can guide the selection of appropriate assessment methods.
Combining self-report with device-based monitoring can enhance overall data quality.

Conclusions:

Careful consideration of assessment purpose, constructs, population, and measurement tools is crucial.
Understanding the theoretical link between exposure and outcome aids interpretation.
Optimizing self-report methods enhances the value of physical activity and sedentary behavior research.