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Article: Classification accuracy of a wearable activity tracker for assessing sedentary behavior and physical activity in 3–5-year-old children
Title | Classification accuracy of a wearable activity tracker for assessing sedentary behavior and physical activity in 3–5-year-old children |
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Authors | |
Keywords | Children Sedentary behavior Preschool Physical activity Obesity Accelerometer |
Issue Date | 2018 |
Citation | International Journal of Environmental Research and Public Health, 2018, v. 15, n. 4, article no. 594 How to Cite? |
Abstract | © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This study examined the accuracy of the Fitbit activity tracker (FF) for quantifying sedentary behavior (SB) and varying intensities of physical activity (PA) in 3–5-year-old children. Twenty-eight healthy preschool-aged children (Girls: 46%, Mean age: 4.8 ± 1.0 years) wore the FF and were directly observed while performing a set of various unstructured and structured free-living activities from sedentary to vigorous intensity. The classification accuracy of the FF for measuring SB, light PA (LPA), moderate-to-vigorous PA (MVPA), and total PA (TPA) was examined calculating Pearson correlation coefficients (r), mean absolute percent error (MAPE), Cohen’s kappa (k), sensitivity (Se), specificity (Sp), and area under the receiver operating curve (ROC-AUC). The classification accuracies of the FF (ROC-AUC) were 0.92, 0.63, 0.77 and 0.92 for SB, LPA, MVPA and TPA, respectively. Similarly, values of kappa, Se, Sp and percentage of correct classification were consistently high for SB and TPA, but low for LPA and MVPA. The FF demonstrated excellent classification accuracy for assessing SB and TPA, but lower accuracy for classifying LPA and MVPA. Our findings suggest that the FF should be considered as a valid instrument for assessing time spent sedentary and overall physical activity in preschool-aged children. |
Persistent Identifier | http://hdl.handle.net/10722/267083 |
ISSN | 2019 Impact Factor: 2.849 2023 SCImago Journal Rankings: 0.808 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Byun, Wonwoo | - |
dc.contributor.author | Lee, Jung Min | - |
dc.contributor.author | Kim, Youngwon | - |
dc.contributor.author | Brusseau, Timothy A. | - |
dc.date.accessioned | 2019-01-31T07:20:28Z | - |
dc.date.available | 2019-01-31T07:20:28Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | International Journal of Environmental Research and Public Health, 2018, v. 15, n. 4, article no. 594 | - |
dc.identifier.issn | 1661-7827 | - |
dc.identifier.uri | http://hdl.handle.net/10722/267083 | - |
dc.description.abstract | © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This study examined the accuracy of the Fitbit activity tracker (FF) for quantifying sedentary behavior (SB) and varying intensities of physical activity (PA) in 3–5-year-old children. Twenty-eight healthy preschool-aged children (Girls: 46%, Mean age: 4.8 ± 1.0 years) wore the FF and were directly observed while performing a set of various unstructured and structured free-living activities from sedentary to vigorous intensity. The classification accuracy of the FF for measuring SB, light PA (LPA), moderate-to-vigorous PA (MVPA), and total PA (TPA) was examined calculating Pearson correlation coefficients (r), mean absolute percent error (MAPE), Cohen’s kappa (k), sensitivity (Se), specificity (Sp), and area under the receiver operating curve (ROC-AUC). The classification accuracies of the FF (ROC-AUC) were 0.92, 0.63, 0.77 and 0.92 for SB, LPA, MVPA and TPA, respectively. Similarly, values of kappa, Se, Sp and percentage of correct classification were consistently high for SB and TPA, but low for LPA and MVPA. The FF demonstrated excellent classification accuracy for assessing SB and TPA, but lower accuracy for classifying LPA and MVPA. Our findings suggest that the FF should be considered as a valid instrument for assessing time spent sedentary and overall physical activity in preschool-aged children. | - |
dc.language | eng | - |
dc.relation.ispartof | International Journal of Environmental Research and Public Health | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.subject | Children | - |
dc.subject | Sedentary behavior | - |
dc.subject | Preschool | - |
dc.subject | Physical activity | - |
dc.subject | Obesity | - |
dc.subject | Accelerometer | - |
dc.title | Classification accuracy of a wearable activity tracker for assessing sedentary behavior and physical activity in 3–5-year-old children | - |
dc.type | Article | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.3390/ijerph15040594 | - |
dc.identifier.pmid | 29587432 | - |
dc.identifier.scopus | eid_2-s2.0-85044756356 | - |
dc.identifier.volume | 15 | - |
dc.identifier.issue | 4 | - |
dc.identifier.spage | article no. 594 | - |
dc.identifier.epage | article no. 594 | - |
dc.identifier.eissn | 1660-4601 | - |
dc.identifier.isi | WOS:000434868800033 | - |
dc.identifier.issnl | 1660-4601 | - |