A Machine Learning Approach for Physical Activity Recognition in Cystic Fibrosis
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In: Measurement in Physical Education and Exercise Science, Vol. 28, No. 2, 06.2024, p. 172-181.
Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - A Machine Learning Approach for Physical Activity Recognition in Cystic Fibrosis
AU - Silveira Bianchim, Mayara
AU - McNarry, Melitta A.
AU - Barker, Alan
AU - Williams, Craig
AU - Denford, Sarah
AU - Thia, Lena
AU - Evans, Rachel
AU - Mackintosh, Kelly
PY - 2024/6
Y1 - 2024/6
N2 - 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.
AB - 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.
KW - Threshold
KW - Physical Activity
KW - ENMO
KW - MAD
KW - Youth
U2 - 10.1080/1091367X.2023.2271444
DO - 10.1080/1091367X.2023.2271444
M3 - Article
VL - 28
SP - 172
EP - 181
JO - Measurement in Physical Education and Exercise Science
JF - Measurement in Physical Education and Exercise Science
SN - 1091-367X
IS - 2
ER -