The influence of training load on postural control and countermovement jump responses in rugby union

Troester, JC; Jasmin, JG; Duffield, R

The influence of training load on postural control and countermovement jump responses in rugby union

Troester, JC

Jasmin, JG Duffield, R

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Publication Type:: Journal Article
Citation:: Science and Medicine in Football, 2019, 3 (4), pp. 320 - 325
Issue Date:: 2019-10-02

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Field	Value	Language
dc.contributor.author	Troester, JC https://orcid.org/0000-0003-3843-8959	en_US
dc.contributor.author	Jasmin, JG	en_US
dc.contributor.author	Duffield, R https://orcid.org/0000-0002-5641-1314	en_US
dc.date.available	2021-04-06T19:00:32Z
dc.date.issued	2019-10-02	en_US
dc.identifier.citation	Science and Medicine in Football, 2019, 3 (4), pp. 320 - 325	en_US
dc.identifier.issn	2473-3938	en_US
dc.identifier.uri	http://hdl.handle.net/10453/138194
dc.description.abstract	© 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group. Purpose: This study investigated responses of single-leg balance and landing and countermovement jump (CMJ) following rugby union training and the specific components of training load associated with test decrement. Methods: Twenty-seven professional rugby union players performed CMJ, single-leg balance and landing tests on a 1000 Hz force plate at the beginning and end of training days. Training load was described by session RPE, Banister’s TRIMP, GPS total distance, high-speed running distance (>5.5 m s−1), relative speed and body load. Results: CMJ eccentric rate of force development (EccRFD) demonstrated moderate impairment post-training (ES ± 90%CL = −0.79 ± 0.29, MBI = almost certainly). CMJ height (−0.21 ± 0.16, possible), concentric impulse (ConIMP) (−0.35 ± 0.17, likely) and single-leg balance sway velocity on the non-dominant leg (0.30 ± 0.26, possible) were also impaired. Regression analyses identified the strongest relationship between sRPE and impaired ConIMP (r = −0.68 ± 21, β = −0.68) whilst other load measures explained 27–50% of the variance in balance and CMJ changes. Conclusions: CMJ variables representing altered movement strategy (EccRFD and IMP) may be useful for assessing acute neuromuscular fatigue in rugby union, though single-leg balance sway velocity may be an alternative when maximal tests are impractical.	en_US
dc.relation.ispartof	Science and Medicine in Football	en_US
dc.relation.isbasedon	10.1080/24733938.2019.1598621	en_US
dc.rights	“This is an Accepted Manuscript of an article published by Taylor & Francis in [Science and Medicine in Football, 2019, 3 (4), pp. 320 - 325], available online: https://www.tandfonline.com/doi/full/10.1080/24733938.2019.1598621]”
dc.rights	info:eu-repo/semantics/openAccess
dc.title	The influence of training load on postural control and countermovement jump responses in rugby union	en_US
dc.type	Journal Article
utslib.citation.volume	4	en_US
utslib.citation.volume	3	en_US
utslib.for	1106 Human Movement and Sports Sciences	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Health
pubs.organisational-group	/University of Technology Sydney/Faculty of Health/Sports and Exercise Science
pubs.organisational-group	/University of Technology Sydney/Strength - CHSP - Health Services and Practice
pubs.organisational-group	/University of Technology Sydney/Students
utslib.copyright.status	open_access	*
pubs.issue	4	en_US
pubs.publication-status	Published	en_US
pubs.volume	3	en_US

Abstract:

© 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group. Purpose: This study investigated responses of single-leg balance and landing and countermovement jump (CMJ) following rugby union training and the specific components of training load associated with test decrement. Methods: Twenty-seven professional rugby union players performed CMJ, single-leg balance and landing tests on a 1000 Hz force plate at the beginning and end of training days. Training load was described by session RPE, Banister’s TRIMP, GPS total distance, high-speed running distance (>5.5 m s−1), relative speed and body load. Results: CMJ eccentric rate of force development (EccRFD) demonstrated moderate impairment post-training (ES ± 90%CL = −0.79 ± 0.29, MBI = almost certainly). CMJ height (−0.21 ± 0.16, possible), concentric impulse (ConIMP) (−0.35 ± 0.17, likely) and single-leg balance sway velocity on the non-dominant leg (0.30 ± 0.26, possible) were also impaired. Regression analyses identified the strongest relationship between sRPE and impaired ConIMP (r = −0.68 ± 21, β = −0.68) whilst other load measures explained 27–50% of the variance in balance and CMJ changes. Conclusions: CMJ variables representing altered movement strategy (EccRFD and IMP) may be useful for assessing acute neuromuscular fatigue in rugby union, though single-leg balance sway velocity may be an alternative when maximal tests are impractical.

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http://hdl.handle.net/10453/138194