Automatic detection of one-on-one tackles and ruck events using microtechnology in rugby union.
Objectives: To automate the detection of ruck and tackle events in rugby union using a specifically-designed algorithm based on microsensor data.Design: Cross-sectional study.Methods: Elite rugby union players wore microtechnology devices (Catapult, S5) during match-play. Ruck (n=125) and tackle (n=...
| Published in: | Journal of Science & Medicine in Sport Vol. 22; no. 7; pp. 827 - 833 |
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| Main Authors: | , , , , , , |
| Format: | research Journal Article |
| Published: |
Elsevier B.V.
Jul2019
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=136801312&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 136801312 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 14402440 1FKA jtl: Journal of Science & Medicine in Sport issn: 14402440 maglogo: N pubinfo: dt: Jul2019 vid: 22 iid: 7 pid: 467 pub: Elsevier B.V. place: New York, New York artinfo: ui: 136801312 136801312 NLM30642674 136801312 10.1016/j.jsams.2019.01.001 NLM30642674 136801312 ppf: 827 ppct: 6 formats: tig: atl: Automatic detection of one-on-one tackles and ruck events using microtechnology in rugby union. aug: au: Chambers, Ryan M. Gabbett, Tim J. Gupta, Ritu Josman, Casey Bown, Rhodri Stridgeon, Paul Cole, Michael H. affil: Welsh Rugby Union, United Kingdom sug: subj: Rugby Physiology Microtechnology Equipment and Supplies Algorithms Accelerometry Predictive Value of Tests Videorecording Male Athletic Performance Adult Reproducibility of Results Cross Sectional Studies Human Adult: 19-44 years Male ab: Objectives: To automate the detection of ruck and tackle events in rugby union using a specifically-designed algorithm based on microsensor data.Design: Cross-sectional study.Methods: Elite rugby union players wore microtechnology devices (Catapult, S5) during match-play. Ruck (n=125) and tackle (n=125) event data was synchronised with video footage compiled from international rugby union match-play ruck and tackle events. A specifically-designed algorithm to detect ruck and tackle events was developed using a random forest classification model. This algorithm was then validated using 8 additional international match-play datasets and video footage, with each ruck and tackle manually coded and verified if the event was correctly identified by the algorithm.Results: The classification algorithm's results indicated that all rucks and tackles were correctly identified during match-play when 79.4±9.2% and 81.0±9.3% of the random forest decision trees agreed with the video-based determination of these events. Sub-group analyses of backs and forwards yielded similar optimal confidence percentages of 79.7% and 79.1% respectively for rucks. Sub-analysis revealed backs (85.3±7.2%) produced a higher algorithm cut-off for tackles than forwards (77.7±12.2%).Conclusions: The specifically-designed algorithm was able to detect rucks and tackles for all positions involved. For optimal results, it is recommended that practitioners use the recommended cut-off (80%) to limit false positives for match-play and training. Although this algorithm provides an improved insight into the number and type of collisions in which rugby players engage, this algorithm does not provide impact forces of these events. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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