Validity of a trunk-mounted accelerometer to measure physical collisions in contact sports
dc.contributor.author | Wundersitz, D. | |
dc.contributor.author | Gastin, P. | |
dc.contributor.author | Robertson, S. | |
dc.contributor.author | Netto, Kevin | |
dc.date.accessioned | 2017-01-30T12:31:09Z | |
dc.date.available | 2017-01-30T12:31:09Z | |
dc.date.created | 2015-10-29T04:08:45Z | |
dc.date.issued | 2015 | |
dc.identifier.citation | Wundersitz, D. and Gastin, P. and Robertson, S. and Netto, K. 2015. Validity of a trunk-mounted accelerometer to measure physical collisions in contact sports. International Journal of Sports Physiology and Performance. 10 (6): pp. 681-686. | |
dc.identifier.uri | http://hdl.handle.net/20.500.11937/22407 | |
dc.identifier.doi | 10.1123/ijspp.2014-0381 | |
dc.description.abstract |
© 2015 Human Kinetics, Inc. Context: Accelerometer peak impact accelerations are being used to measure player physical demands in contact sports. However, their accuracy to do so has not been ascertained. Purpose: To compare peak-impact-acceleration data from an accelerometer contained in a wearable tracking device with a 3-dimensional motion-analysis (MA) system during tackling and bumping. Methods: Twenty-five semielite rugby athletes wore a tracking device containing a 100-Hz triaxial accelerometer (MinimaxX S4, Catapult Innovations, Australia). A single retroreflective marker was attached to the device, with its position recorded by a 12-camera MA system during 3 physical-collision tasks (tackle bag, bump pad, and tackle drill; N = 625). The accuracy, effect size, agreement, precision, and relative errors for each comparison were obtained as measures of accelerometer validity. Results: Physical-collision peak impact accelerations recorded by the accelerometer overestimated (mean bias 0.60 g) those recorded by the MA system (P < .01). Filtering the raw data at a 20-Hz cutoff improved the accelerometer's relationship with MA data (mean bias 0.01 g; P > .05). When considering the data in 9 magnitude bands, the strongest relationship with the MA system was found in the 3.0-g or less band, and the precision of the accelerometer tended to reduce as the magnitude of impact acceleration increased. Of the 3 movements performed, the tackle-bag task displayed the greatest validity with MA. Conclusions: The findings indicate that the MinimaxX S4 accelerometer can accurately measure physical-collision peak impact accelerations when data are filtered at a 20-Hz cutoff frequency. As a result, accelerometers may be useful to measure physical collisions in contact sports. | |
dc.publisher | Human Kinetics Publishers Inc. | |
dc.title | Validity of a trunk-mounted accelerometer to measure physical collisions in contact sports | |
dc.type | Journal Article | |
dcterms.source.volume | 10 | |
dcterms.source.number | 6 | |
dcterms.source.startPage | 681 | |
dcterms.source.endPage | 686 | |
dcterms.source.issn | 1555-0265 | |
dcterms.source.title | International Journal of Sports Physiology and Performance | |
curtin.department | School of Physiotherapy and Exercise Science | |
curtin.accessStatus | Fulltext not available |
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