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A Machine Learning Approach for Physical Activity Recognition in Cystic Fibrosis

Mayara S. Bianchim, Melitta McNarry Orcid Logo, Alan R. Barker, Craig A. Williams, Sarah Denford, Lena Thia, Rachel Evans, Kelly Mackintosh Orcid Logo

Measurement in Physical Education and Exercise Science, Volume: 28, Issue: 2, Pages: 172 - 181

Swansea University Authors: Melitta McNarry Orcid Logo, Kelly Mackintosh Orcid Logo

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DOI (Published version): 10.1080/1091367x.2023.2271444

Abstract

This study aimed to develop and validate machine learning models to predict intensities in children and adolescents with cystic fibrosis (CF) across different accelerometry brands and placements. Thirty-five children and adolescents with CF (11.6 ± 2.8 yrs; 15 girls) and 28 healthy youth (12.2 ± 2.7...

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Published in: Measurement in Physical Education and Exercise Science
ISSN: 1091-367X 1532-7841
Published: Informa UK Limited 2024
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa64781
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Abstract: This study aimed to develop and validate machine learning models to predict intensities in children and adolescents with cystic fibrosis (CF) across different accelerometry brands and placements. Thirty-five children and adolescents with CF (11.6 ± 2.8 yrs; 15 girls) and 28 healthy youth (12.2 ± 2.7 yrs; 16 girls) performed six activities whilst wearing GENEActivs (both wrists) and ActiGraphs GT9X (both wrists and waist). Three supervised learning classifiers (K-Nearest Neighbour, Random Forest and eXtreme Gradient Boosted Decision Tree) were used to identify the input signal pattern for each PA type and intensity, with a 10-fold cross-validation utilized to assess the performance of the classifiers. ActiGraph GT9X on the dominant wrist and waist and GENEActiv on the dominant wrist failed to predict vigorous intensity PA activities. All other models, for activity type and intensities, exceeded 97% accuracy, with a sensitivity and specificity of greater than 95%, irrespective of accelerometer brand, placement or health condition.
Keywords: Threshold, Physical Activity, ENMO, MAD, youth
College: Faculty of Science and Engineering
Funders: This work was supported by the Cystic Fibrosis Trust UK under its programme grant for Strategic Research Centres (grant reference number RP-PG-0108-10011).
Issue: 2
Start Page: 172
End Page: 181

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