Opal Actigraphy (Activity and Sleep) Measures Compared to ActiGraph: A Validation Study

Physical activity and sleep monitoring in daily life provide vital information to track health status and physical fitness. The aim of this study was to establish concurrent validity for the new Opal Actigraphy solution in relation to the widely used ActiGraph GT9X for measuring physical activity fr...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2023-02, Vol.23 (4), p.2296
Main Authors: Shah, Vrutangkumar V, Brumbach, Barbara H, Pearson, Sean, Vasilyev, Paul, King, Edward, Carlson-Kuhta, Patricia, Mancini, Martina, Horak, Fay B, Sowalsky, Kristen, McNames, James, El-Gohary, Mahmoud
Format: Article
Language:English
Subjects:
Accelerometers
Accelerometry
ActiGraph
Actigraphy
activity
Adult
Aged
Agreements
Algorithms
Comparative analysis
Correlation coefficients
daily life
Data collection
Humans
Laboratories
Measurement
Medical research
Medicine, Experimental
Middle Aged
Physical fitness
Polysomnography
Reliability analysis
Reproducibility of Results
Sensors
Sleep
Software
Validity
Wearable computers
wearable sensors
Wearable technology
Wrist
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Summary:Physical activity and sleep monitoring in daily life provide vital information to track health status and physical fitness. The aim of this study was to establish concurrent validity for the new Opal Actigraphy solution in relation to the widely used ActiGraph GT9X for measuring physical activity from accelerometry epic counts (sedentary to vigorous levels) and sleep periods in daily life. Twenty participants (age 56 + 22 years) wore two wearable devices on each wrist for 7 days and nights, recording 3-D accelerations at 30 Hz. Bland-Altman plots and intraclass correlation coefficients (ICCs) assessed validity (agreement) and test-retest reliability between ActiGraph and Opal Actigraphy sleep durations and activity levels, as well as between the two different versions of the ActiGraph. ICCs showed excellent reliability for physical activity measures and moderate-to-excellent reliability for sleep measures between Opal versus Actigraph GT9X and between GT3X versus GT9X. Bland-Altman plots and mean absolute percentage error (MAPE) also show a comparable performance (within 10%) between Opal and ActiGraph and between the two ActiGraph monitors across activity and sleep measures. In conclusion, physical activity and sleep measures using Opal Actigraphy demonstrate performance comparable to that of ActiGraph, supporting concurrent validation. Opal Actigraphy can be used to quantify activity and monitor sleep patterns in research and clinical studies.
ISSN:1424-8220
1424-8220
DOI:10.3390/s23042296