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

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Internet reporting of weekly physical activity behaviors: the WIN Study.

Tyson M Bain¹, Georita M Frierson, Elaine Trudelle-Jackson

¹Baylor Health Care System, Dallas, TX, USA.

Journal of Physical Activity & Health

|August 5, 2010

Summary

Internet tracking offers a simple, valid method for monitoring physical activity (PA) and injuries in large populations. This approach provides nearly real-time data, supporting public health research and interventions.

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Last Updated: Jun 10, 2026

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Area of Science:

Public Health
Epidemiology
Biostatistics

Background:

Self-report measures are validated tools for assessing physical activity (PA).
There is a need for accessible, location-independent methods to measure PA in large populations.
This study focuses on weekly tracking of PA and musculoskeletal injury reports using the Internet.

Purpose of the Study:

To illustrate the feasibility of Internet-based tracking for physical activity behaviors.
To demonstrate weekly monitoring of musculoskeletal injury reports.
To assess the viability of online methods for large-scale PA assessment.

Main Methods:

Utilized the Women's Injury Study (WIN) methodology.
Employed online completion of BRFSS-related physical activity items.
Collected data from over 900 women weekly for approximately 3 years.

Main Results:

Generated over 45,000 weekly physical activity and injury logs.
Achieved 91% of total logs submitted via online records.
Self-reported pedometer steps aligned with findings from smaller research samples.

Conclusions:

Internet tracking is a viable method for near real-time physical activity assessment.
Successfully developed and monitored self-reported PA behaviors online.
Provides recommendations for implementing similar Internet-based tracking methods.