Validity of a wearable accelerometer device to measure average acceleration values during high speed running
Data(s) |
01/03/2016
|
---|---|
Resumo |
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 (n = 39). Acceleration was measured using a 100 Hz tri-axial accelerometer integrated within a wearable tracking device (SPI-HPU, GPSports, Canberra). To provide a concurrent measure of acceleration, timing gates were positioned at 10 m intervals (0 m - 40 m). Accelerometer data collected during 0 m - 10 m and 10 m - 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 m - 10 m and 10 m - 20 m, regardless of the data filtering technique (p < 0.001). Body mass significantly affected all accelerometer variables (p < 0.10, partial η = 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. |
Identificador | |
Idioma(s) |
eng |
Publicador |
Lippincott Williams & Wilkins |
Relação |
http://dro.deakin.edu.au/eserv/DU:30085275/wundersitz-validityof-inpress-2016.pdf http://www.dx.doi.org/10.1519/JSC.0000000000001396 |
Direitos |
2016, National Strength and Conditioning Association |
Palavras-Chave | #wearable tracking device #accuracy #sprinting |
Tipo |
Journal Article |