Measurement of energy expenditure in elite athletes using MEMS-based triaxial accelerometers

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Title Measurement of energy expenditure in elite athletes using MEMS-based triaxial accelerometers
Author Wixted, Andrew James; Thiel, David Victor; Hahn, Allan G.; Gore, Christopher J.; Pyne, David B.; James, Daniel Arthur
Journal Name IEEE Sensors Journal
Editor Troy Nagle
Year Published 2007
Place of publication Piscataway, USA
Publisher IEEE
Abstract Fitness development and performance assessment of elite athletes requires an understanding of many physiological factors, many of these are direct and indirect measures of athlete energy expenditure. Many methods are physiological factor assessments and require the athlete to be constrained by laboratory equipment or periodic interruption of activity to take measurements such as blood samples are required to be taken. This paper presents a method that is entirely ambulatory and noninvasive, using microelectromechanical systems (MEMS) accelerometers. The commonly used output of commercial accelerometer-based devices (known as “counts”) cannot discriminate activity intensity for the activities of interest. This, in conjunction with variability in output from different systems and lack of commonality across manufacturers, limits the usefulness of commercial devices. This paper identifies anthropometric and kinematic sources of inter-athlete variability in accelerometer output, leading to an alternate energy expenditure estimator based mainly on step frequency modified by anthropometric measures. This energy expenditure estimator is more robust and not influenced by many sources of variability that affect the currently used estimator. In this system, low-power signal processing was implemented to extract both the energy estimator and other information of physiological and statistical interest.
Peer Reviewed Yes
Published Yes
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Copyright Statement Copyright 2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Volume 7
Issue Number 4
Page from 481
Page to 488
ISSN 1530-437X
Date Accessioned 2007-11-30
Language en_AU
Faculty Faculty of Science, Environment, Engineering and Technology
Subject PRE2009-Biomechanics; PRE2009-Engineering/Technology Instrumentation
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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