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Validation of accelerometer-based energy expenditure equations using doubly-labelled water technique in 11-13 year-old Sri Lankan children

Authors:

Prasangi M. Dabare,

General Sir John Kotelawala Defence University, LK
About Prasangi
Lecturer, Department of Physiotherapy, Faculty of Allied Health Sciences
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Pujitha Wickramasinghe,

University of Colombo, LK
About Pujitha
Senior Professor, Department of Pediatrics, Faculty of Medicine
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Indu Waidyatilaka,

University of Colombo, LK
About Indu
Senior Lecturer, Department of Biochemistry & Molecular Biology, F/M
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Sarita Devi,

St. John’s National Academy of Health Sciences, Bangalore, Karnataka, IN
About Sarita
Lecturer, St. John's Research Institute
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Anura V Kurpad,

St. John's National Academy of Health Sciences, Bangalore, Karnataka, IN
About Anura
Professor, St. John's Medical College
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D. Samaranayake,

University of Colombo, LK
About D.
Senior Lecturer, Deppartment of Community Medicine, F/M
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Maduka de Lanerolle-Dias,

University of Colombo, LK
About Maduka
Senior Lecturer, Department of Biochemistry & Molecular Biology, F/M
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Rajitha Wickremasinghe,

University of Kelaniya, LK
About Rajitha
Professor, Department of Public Health, F/M
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Andrew P. Hills,

University of Tasmania, AU
About Andrew
Professor, School of Health Sciences, College of Health & Medicine
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Pulani Lanerolle

University of Colombo, LK
About Pulani

Professor, Department of Biochemistry & Molecular Biology, FM

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Abstract

Introduction: Accelerometer based prediction equations are used to calculate physical activity energy expenditure (PAEE) among children. Currently, accelerometer-derived PAEE prediction equations validated against a criterion method do not exist for Sri Lankan children.


Objective: To assess the validity of published prediction equations to estimate PAEE in Sri Lankan children against the doubly labelled water (DLW) technique.


Method: Ninety-six children aged 11-13 years from an urban area of Sri Lanka were included in the study. Energy expenditure was assessed using the DLW technique over 10 days and participants wore ActiGraph accelerometers during the same period. Correlation between the measured and predicted PAEE was assessed by the Pearson correlation coefficient. Validity of equations was assessed by the paired t-test and the level of agreement using the Bland Altman analysis.


Results: Predicted PAEE values were significantly (p<0.05) correlated with the measured PAEE except for the equations of Treuth and Schmitz. Prediction equations of Ekelund, Freedson, Mattock and Zhu significantly overestimated measured PAEE (p<0.05) whereas, Trost and Puyau equations significantly underestimated PAEE. A wide limit of agreement with a large mean bias was observed in all estimated PAEE, except for the equation of Zhu.


Conclusions: Existing accelerometer-based PAEE equations have low accuracy in predicting PAEE in Sri Lankan children.

 

Sri Lanka Journal of Child Health, 2021; 50(4): 637-643

How to Cite: Dabare, P.M., Wickramasinghe, P., Waidyatilaka, I., Devi, S., Kurpad, A.V., Samaranayake, D., de Lanerolle-Dias, M., Wickremasinghe, R., Hills, A.P. and Lanerolle, P., 2021. Validation of accelerometer-based energy expenditure equations using doubly-labelled water technique in 11-13 year-old Sri Lankan children. Sri Lanka Journal of Child Health, 50(4), pp.637–643. DOI: http://doi.org/10.4038/sljch.v50i4.9853
Published on 05 Dec 2021.
Peer Reviewed

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