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Assessing the Accuracy of Fitness Smartwatch Data for Cardiovascular and Physical Activity Monitoring: A Validation Study in Digital Health
Published on: February 21, 2025
Validation of Web-based physical activity measurement systems using doubly labeled water
Hideyuki Namba1, Yukio Yamaguchi, Yosuke Yamada
1Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan. hnanba@fukuoka-u.ac.jp
Journal of Medical Internet Research
|September 27, 2012
Summary
The 24-hour Physical Activity Record Web (24hPAR WEB) system demonstrated moderate to high accuracy in measuring physical activity energy expenditure, making it suitable for research. The 7 days Recall Web (7daysRecall WEB) system showed less accuracy but was quicker to complete.
Area of Science:
- Physical Activity Measurement
- Web-based Health Systems
- Epidemiological Research Tools
Background:
- Online systems offer convenient physical activity data collection.
- Two novel systems, 24-hour Physical Activity Record Web (24hPAR WEB) and 7 days Recall Web (7daysRecall WEB), were developed.
Purpose of the Study:
- To validate two web-based physical activity measurement systems.
- Comparison against the doubly labeled water (DLW) method.
Main Methods:
- 20 adults (25-61 years) participated in a randomized study.
- Participants completed both 24hPAR WEB and 7daysRecall WEB systems.
- Activity Energy Expenditure (AEE) and Total Energy Expenditure (TEE) were measured weekly via DLW and compared to web-based estimates.
Main Results:
- 24hPAR WEB showed a moderate to high correlation (r=.679 for AEE, r=.874 for TEE) with DLW.
- 7daysRecall WEB showed a weaker correlation (r=.144 for AEE, r=.590 for TEE) with DLW.
- 24hPAR WEB completion time averaged 8 minutes 10 seconds; 7daysRecall WEB averaged 6 minutes 38 seconds.
Conclusions:
- Both web-based systems are effective for collecting physical activity data in epidemiological studies.
- The 24hPAR WEB system's accuracy makes it suitable for intervention evaluation and behavior examination.
- The 7daysRecall WEB system, while less accurate, offers a faster data collection method.
