Measuring vertical stiffness in sport with accelerometers : exercise caution!

Tahleya M. Eggers; Tim I. Massard; Peter J. Clothier; Ric Lovell

doi:10.1519/JSC.0000000000002318

Measuring vertical stiffness in sport with accelerometers : exercise caution!

Tahleya M. Eggers, Tim I. Massard, Peter J. Clothier, Ric Lovell

Western Sydney University

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

This study aimed to determine the measurement accuracy of triaxial accelerometers, to determine vertical stiffness (K vert ) during overground running, and to examine the influence of device location. Seventeen healthy adults wore 2 triaxial accelerometers (positioned between scapulae and at lumbar spine) during a 2-minute continuous 20-m shuttle run (12 km$h2 1 ), which was repeated 7 days later. Accelerometer-derived K vert data were compared with that calculated from corresponding force-plate ground contacts (criterion measure). Moderate correlations (r = 0.65-0.66) between the accelerometer and criterion measure were identified, irrespective of unit location. However, accelerometer-determined K vert had questionable reliability in both positions (intraclass correlation coefficient = 0.70-0.71). These results suggest caution be taken when using accelerometer-derived K vert during overground running.

Original language	English
Pages (from-to)	1919-1922
Number of pages	4
Journal	Journal of Strength and Conditioning Research
Volume	32
Issue number	7
DOIs	https://doi.org/10.1519/JSC.0000000000002318
Publication status	Published - 2018

Bibliographical note

Publisher Copyright:
© 2017 National Strength and Conditioning Association

Keywords

accelerometers
exercise
fatigue
running

Access to Document

10.1519/JSC.0000000000002318

Cite this

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title = "Measuring vertical stiffness in sport with accelerometers : exercise caution!",

abstract = "This study aimed to determine the measurement accuracy of triaxial accelerometers, to determine vertical stiffness (K vert ) during overground running, and to examine the influence of device location. Seventeen healthy adults wore 2 triaxial accelerometers (positioned between scapulae and at lumbar spine) during a 2-minute continuous 20-m shuttle run (12 km$h2 1 ), which was repeated 7 days later. Accelerometer-derived K vert data were compared with that calculated from corresponding force-plate ground contacts (criterion measure). Moderate correlations (r = 0.65-0.66) between the accelerometer and criterion measure were identified, irrespective of unit location. However, accelerometer-determined K vert had questionable reliability in both positions (intraclass correlation coefficient = 0.70-0.71). These results suggest caution be taken when using accelerometer-derived K vert during overground running.",

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AB - This study aimed to determine the measurement accuracy of triaxial accelerometers, to determine vertical stiffness (K vert ) during overground running, and to examine the influence of device location. Seventeen healthy adults wore 2 triaxial accelerometers (positioned between scapulae and at lumbar spine) during a 2-minute continuous 20-m shuttle run (12 km$h2 1 ), which was repeated 7 days later. Accelerometer-derived K vert data were compared with that calculated from corresponding force-plate ground contacts (criterion measure). Moderate correlations (r = 0.65-0.66) between the accelerometer and criterion measure were identified, irrespective of unit location. However, accelerometer-determined K vert had questionable reliability in both positions (intraclass correlation coefficient = 0.70-0.71). These results suggest caution be taken when using accelerometer-derived K vert during overground running.

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KW - exercise

KW - fatigue

KW - running

UR - http://handle.westernsydney.edu.au:8081/1959.7/uws:46096

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DO - 10.1519/JSC.0000000000002318

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JO - Journal of Strength and Conditioning Research

JF - Journal of Strength and Conditioning Research

IS - 7

ER -

Measuring vertical stiffness in sport with accelerometers : exercise caution!

Abstract

Bibliographical note

Keywords

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