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Validity of an upper-body-mounted accelerometer to measure peak vertical and resultant force during running and change-of-direction tasks

journal contribution
posted on 01.01.2013, 00:00 authored by Daniel Wundersitz, Kevin Netto, Brad AisbettBrad Aisbett, Paul Gastin
This study assessed the validity of a tri-axial accelerometer worn on the upper body to estimate peak forces during running and change-of-direction tasks. Seventeen participants completed four different running and change-of-direction tasks (0°, 45°, 90°, and 180°; five trials per condition). Peak crania-caudal and resultant acceleration was converted to force and compared against peak force plate ground reaction force (GRF) in two formats (raw and smoothed). The resultant smoothed (10 Hz) and crania-caudal raw (except 180°) accelerometer values were not significantly different to resultant and vertical GRF for all running and change-of-direction tasks, respectively. Resultant accelerometer measures showed no to strong significant correlations (r = 0.00–0.76) and moderate to large measurement errors (coefficient of variation [CV] = 11.7–23.9%). Crania-caudal accelerometer measures showed small to moderate correlations (r = − 0.26 to 0.39) and moderate to large measurement errors (CV = 15.0–20.6%). Accelerometers, within integrated micro-technology tracking devices and worn on the upper body, can provide a relative measure of peak impact force experienced during running and two change-of-direction tasks (45° and 90°) provided that resultant smoothed values are used.

History

Journal

Sports Biomechanics

Volume

12

Issue

4

Pagination

403 - 412

Publisher

Routledge

Location

Oxford, Eng.

ISSN

1476-3141

eISSN

1752-6116

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2013, Taylor & Francis