Picture of two heads

Open Access research that challenges the mind...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including those from the School of Psychological Sciences & Health - but also papers by researchers based within the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

Discover more...

Validation of actigraph accelerometer estimates of total energy expenditure in young children

Reilly, John J and Kelly, L.A. and Montgomery, C. and Jackson, D.M. and Slater, C and Grant, S and Paton, J.Y. (2006) Validation of actigraph accelerometer estimates of total energy expenditure in young children. International Journal of Pediatric Obesity, 1 (3). pp. 161-167. ISSN 1747-7166

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

Purpose. To assess the validity of two equations based on the Actigraph CSA/MTI accelerometer for prediction of total energy expenditure (TEE). Research methods and procedures. The criterion was TEE measured using the doubly labeled water method in 85 children, mean age 4.6 years (SD 1.1), over 7 days in the pre-schoolers and 10 days in the school-age participants. Children wore the Actigraph concurrently during waking hours, for 3 of 7 days (pre-schoolers) or 7 of 10 days (school-age children). We tested two prediction equations based on accelerometry. Agreement between predicted and measured TEE was assessed using the ‘Bland Altman’ approach. Results. Mean TEE measured by doubly-labeled water was 5.8 MJ/d (SD 1.6). Mean error for the Ekelund equation was + 0.3 MJ/d (limits of agreement − 3.7 to + 4.3), and for that of Puyau et al. was − 0.3 MJ/d (limits of agreement + 3.2 to − 3.8). Conclusions. Simple approaches using the Actigraph appear to be inadequate for the estimation of free-living TEE in young children at present.