Alexander, Jeremy P

Hopkinson, Trent L

Wundersitz, Daniel W T

Serpell, Benjamin G

Mara, Jocelyn K

Ball, Nick B

2016-11

<p>The aim of this study was to determine the validity of an accelerometer to measure average acceleration values during high-speed running. Thirteen subjects performed three sprint efforts over a 40-m distance (<i>n</i> = 39). Acceleration was measured using a 100-Hz triaxial accelerometer integrated within a wearable tracking device (SPI; HPU; GPSports). To provide a concurrent measure of acceleration, timing gates were positioned at 10-m intervals (0-40 m). Accelerometer data collected during 0-10 m and 10-20 m provided a measure of average acceleration values. Accelerometer data was recorded as the raw output and filtered by applying a 3-point moving average and a 10-point moving average. The accelerometer could not measure average acceleration values during high-speed running. The accelerometer significantly overestimated average acceleration values during both 0-10 m and 10-20 m, regardless of the data filtering technique (<i>p</i> < 0.001). Body mass significantly affected all accelerometer variables (<i>p</i> < 0.10, partial η² = 0.091-0.219). Body mass and the absence of a gravity compensation formula affect the accuracy and practicality of accelerometers. Until GPSports-integrated accelerometers incorporate a gravity compensation formula, the usefulness of any accelerometer-derived algorithms is questionable.</p>

Journal of Strength and Conditioning Research, 30(11), p. 3007-3013

1533-4287

1064-8011

26937772

https://hdl.handle.net/1959.11/52545

Lippincott Williams & Wilkins

Validity of a Wearable Accelerometer Device to Measure Average Acceleration Values During High-Speed Running

Journal Article

Publication