Open AccessActivity Intensity, Volume, and Norms: Utility and Interpretation of Accelerometer Metrics
Author(s) -
Alex V. Rowlands,
Stuart J. Fairclough,
Thomas Yates,
Charlotte L. Edwardson,
Melanie J. Davies,
Fehmidah Munir,
Kamlesh Khunti,
Victoria Stiles
Publication year - 2019
Publication title -
medicine and science in sports and exercise
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.703
H-Index - 224
eISSN - 1530-0315
pISSN - 0195-9131
DOI - 10.1249/mss.0000000000002047
Subject(s) - percentile , accelerometer , physical activity , population , intensity (physics) , national health and nutrition examination survey , medicine , obesity , demography , psychology , mathematics , physical therapy , statistics , computer science , endocrinology , environmental health , physics , quantum mechanics , sociology , operating system
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.