Tennis serve volume, distribution and accelerometer load during training and tournaments from wearable microtechnology

Perri, T; Reid, M; Murphy, A; Duffield, R

Tennis serve volume, distribution and accelerometer load during training and tournaments from wearable microtechnology

Perri, T Reid, M Murphy, A Duffield, R

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Publisher:: ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
Publication Type:: Journal Article
Citation:: International Journal of Performance Analysis in Sport, 2023, ahead-of-print, (ahead-of-print)
Issue Date:: 2023-01-01

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Field	Value	Language
dc.contributor.author	Perri, T
dc.contributor.author	Reid, M
dc.contributor.author	Murphy, A
dc.contributor.author	Duffield, R https://orcid.org/0000-0002-5641-1314
dc.date.accessioned	2024-01-17T22:08:55Z
dc.date.available	2024-01-17T22:08:55Z
dc.date.issued	2023-01-01
dc.identifier.citation	International Journal of Performance Analysis in Sport, 2023, ahead-of-print, (ahead-of-print)
dc.identifier.issn	2474-8668
dc.identifier.issn	1474-8185
dc.identifier.uri	http://hdl.handle.net/10453/174733
dc.description.abstract	This study analysed the volume, intensity and distribution of tennis serving between (1) training and tournament mesocycles, and (2) within-mesocycle based on session-type, drill-type and week. Seven elite females wore a GPS device, with in-built accelerometer and gyroscope, during training and tournament mesocycles. Sessions were classified as “practice sessions” or “official matches” and drills as “serve-focused drills” or “point-play”. Training weeks were classified according to their timing prior to tournaments (“Week −3”, “Week −2” and “Week −1”). Machine learning algorithms detected serves from the raw accelerometer and gyroscope data to report serve count, load and rotation magnitude in absolute and relative (.min−1 or serve) values. Cohen’s d with 95% confidence intervals compared serve volume (count), intensity (serve load, rotation magnitude) and distribution (n.min−1) between session- and drill-type during mesocycles. Cumulative serve counts were compared between training weeks. Increased absolute serve load was observed during official matches compared to practice sessions (d = 0.97–1.07[0.69–1.30]). Serve-focused drills in training mesocycles have lower absolute counts and serve load (d = 0.82[0.54–1.34]), though greater relative count and load (d = 1.10–1.87[0.59–2.19]). Trivial-small ES existed between training weeks for cumulative serve count (d = 0.12–0.25[−0.83–1.27]). Session- and drill-level analyses highlight greater mechanical demands in official matches, though lower serve density in point-play.
dc.language	English
dc.publisher	ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
dc.relation.ispartof	International Journal of Performance Analysis in Sport
dc.relation.isbasedon	10.1080/24748668.2023.2296776
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.rights	This is an Accepted Manuscript of an article published by Taylor & Francis in International Journal of Performance Analysis in Sport on 20 Dec 2023, available online: http://www.tandfonline.com/10.1080/24748668.2023.2296776
dc.subject	1106 Human Movement and Sports Sciences
dc.subject.classification	3202 Clinical sciences
dc.subject.classification	4207 Sports science and exercise
dc.title	Tennis serve volume, distribution and accelerometer load during training and tournaments from wearable microtechnology
dc.type	Journal Article
utslib.citation.volume	ahead-of-print
utslib.for	1106 Human Movement and Sports Sciences
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Health
pubs.organisational-group	/University of Technology Sydney/Strength - CHSP - Health Services and Practice
utslib.copyright.status	embargoed	*
utslib.copyright.embargo	2024-12-20T00:00:00+1000Z
dc.date.updated	2024-01-17T22:08:53Z
pubs.issue	ahead-of-print
pubs.publication-status	Published
pubs.volume	ahead-of-print
utslib.citation.issue	ahead-of-print

Abstract:

This study analysed the volume, intensity and distribution of tennis serving between (1) training and tournament mesocycles, and (2) within-mesocycle based on session-type, drill-type and week. Seven elite females wore a GPS device, with in-built accelerometer and gyroscope, during training and tournament mesocycles. Sessions were classified as “practice sessions” or “official matches” and drills as “serve-focused drills” or “point-play”. Training weeks were classified according to their timing prior to tournaments (“Week −3”, “Week −2” and “Week −1”). Machine learning algorithms detected serves from the raw accelerometer and gyroscope data to report serve count, load and rotation magnitude in absolute and relative (.min−1 or serve) values. Cohen’s d with 95% confidence intervals compared serve volume (count), intensity (serve load, rotation magnitude) and distribution (n.min−1) between session- and drill-type during mesocycles. Cumulative serve counts were compared between training weeks. Increased absolute serve load was observed during official matches compared to practice sessions (d = 0.97–1.07[0.69–1.30]). Serve-focused drills in training mesocycles have lower absolute counts and serve load (d = 0.82[0.54–1.34]), though greater relative count and load (d = 1.10–1.87[0.59–2.19]). Trivial-small ES existed between training weeks for cumulative serve count (d = 0.12–0.25[−0.83–1.27]). Session- and drill-level analyses highlight greater mechanical demands in official matches, though lower serve density in point-play.

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http://hdl.handle.net/10453/174733