Journal article
Activity Intensity, Volume, and Norms: Utility and Interpretation of Accelerometer Metrics
AV Rowlands, SJ Fairclough, T Yates, CL Edwardson, M Davies, F Munir, K Khunti, VH Stiles
Medicine and Science in Sports and Exercise | LIPPINCOTT WILLIAMS & WILKINS | Published : 2019
Abstract
Purpose: The physical activity profile can be described from accelerometer data using two population-independent metrics: average acceleration (ACC, volume) and intensity gradient (IG, intensity). This article aims 1) to demonstrate how these metrics can be used to investigate the relative contributions of volume and intensity of physical activity for a range of health markers across data sets and 2) to illustrate the future potential of the metrics for generation of age and sex-specific percentile norms. Methods: Secondary data analyses were conducted on five diverse data sets using wrist-worn accelerometers (ActiGraph/GENEActiv/Axivity): children (n = 145), adolescent girls (n = 1669), off..
View full abstractGrants
Awarded by National Institute for Health Research
Funding Acknowledgements
The authors thank the project staff involved with Active Schools: Skelmersdale (ASSK) and Sarah Taylor for data collection and all researchers and project staff involved in the Girls Active evaluation, SMArTWork trial, UK Biobank, andCODECfor access to the data used herein. Analysis of the pre-and postmenopausal samples was conducted using the UK Biobank Resource (reference no. 10995).They also thank the participating schools in ASSK, children, and teachers; the pupils and teachers who took part in the Girls Active evaluation study, the Youth Sport Trust; the participants in the SMArT Work trial; the participants in UK Biobank; and the participants in the CODEC study. The ASSK physical activity intervention study was funded by West Lancashire Sport Partnership UK, West Lancashire Community Leisure UK, and Edge Hill University Ormskirk UK.The Girls Active evaluation was funded by the NIHR Public Health Research Programme (13/90/30) and undertaken in collaboration with the Leicester Clinical Trials Unit, a UKCRC-registered clinical trial unit in receipt of NIHR CTU support funding.The SMArT Work trial was funded by the Department of Health Policy Research Programme (project no. PR-R5-0213-25004).The processing and analysis of the Biobank pre-and postmenopausal data work was supported by an internal grant from the University of Exeter (UK) Project Development Fund (Science).Professors Davies and Khunti are NIHR senior investigators. The University of Leicester authors are supported by the NIHR Leicester Biomedical Research Centre and the Collaboration for leadership in Applied Health Research and Care East Midlands. The views expressed are those of the authors and not necessarily those of the NHS, NIHR, or Department of Health.