Convergent validity and reliability of a novel repeated agility protocol in junior rugby league players [version 3; peer review: 2 approved]

Background: : Rugby league involves repeated, complex, and high intensity change-of-direction (COD) movements with no existing test protocols that specifically assesses these multiple physical fitness components simultaneously. Thus, the current study examined the convergent validity of a repeated I...

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Autores principales:	Anthony Nicholls, Anthony Leicht, Jonathan Connor, Aaron Halliday, Kenji Doma
Formato:	article
Lenguaje:	EN
Publicado:	F1000 Research Ltd 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f9cdd4732c6f4f33bafe58fc902f1d35
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spelling	oai:doaj.org-article:f9cdd4732c6f4f33bafe58fc902f1d352021-11-29T14:03:14ZConvergent validity and reliability of a novel repeated agility protocol in junior rugby league players [version 3; peer review: 2 approved]2046-140210.12688/f1000research.23129.3https://doaj.org/article/f9cdd4732c6f4f33bafe58fc902f1d352021-11-01T00:00:00Zhttps://f1000research.com/articles/9-624/v3https://doaj.org/toc/2046-1402Background: : Rugby league involves repeated, complex, and high intensity change-of-direction (COD) movements with no existing test protocols that specifically assesses these multiple physical fitness components simultaneously. Thus, the current study examined the convergent validity of a repeated Illinois Agility (RIA) protocol with the repeated T-agility protocol, and the repeatability of the RIA protocol in adolescent Rugby League players. Furthermore, aerobic capacity and anaerobic and COD performance were assessed to determine whether these physical qualities were important contributors to the RIA protocol. Methods: Twenty-two junior Rugby League players completed 4 sessions with each separated by 7 days. Initially, physical fitness characteristics at baseline (i.e., Multi-stage Shuttle test, countermovement jump, 30-m sprint, single-effort COD and repeated sprint ability [RSA]) were assessed. The second session involved a familiarisation of RIA and repeated T-agility test (RTT) protocols. During the third and fourth sessions, participants completed the RIA and RTT protocols in a randomised, counterbalanced design to examine the validity and test-retest reliability of these protocols. Results: For convergent validity, significant correlations were identified between RIA and RTT performances (r= >0.80; p<0.05). For contributors to RIA performance, significant correlations were identified between all baseline fitness characteristics and RIA (r = >0.71; p < 0.05). Reliability of the RIA protocol was near perfect with excellent intra-class correlation coefficient (0.87-0.97), good ratio limits of agreement (×/÷ 1.05-1.06) and low coefficient of variations (1.8-2.0%). Conclusions: The current study has demonstrated the RIA to be a simple, valid and reliable field test for RL athletes that can provide coaches with information about their team’s ability to sustain high intensity, multi-directional running efforts.Anthony NichollsAnthony LeichtJonathan ConnorAaron HallidayKenji DomaF1000 Research LtdarticleMedicineRScienceQENF1000Research, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Anthony Nicholls Anthony Leicht Jonathan Connor Aaron Halliday Kenji Doma Convergent validity and reliability of a novel repeated agility protocol in junior rugby league players [version 3; peer review: 2 approved]
description	Background: : Rugby league involves repeated, complex, and high intensity change-of-direction (COD) movements with no existing test protocols that specifically assesses these multiple physical fitness components simultaneously. Thus, the current study examined the convergent validity of a repeated Illinois Agility (RIA) protocol with the repeated T-agility protocol, and the repeatability of the RIA protocol in adolescent Rugby League players. Furthermore, aerobic capacity and anaerobic and COD performance were assessed to determine whether these physical qualities were important contributors to the RIA protocol. Methods: Twenty-two junior Rugby League players completed 4 sessions with each separated by 7 days. Initially, physical fitness characteristics at baseline (i.e., Multi-stage Shuttle test, countermovement jump, 30-m sprint, single-effort COD and repeated sprint ability [RSA]) were assessed. The second session involved a familiarisation of RIA and repeated T-agility test (RTT) protocols. During the third and fourth sessions, participants completed the RIA and RTT protocols in a randomised, counterbalanced design to examine the validity and test-retest reliability of these protocols. Results: For convergent validity, significant correlations were identified between RIA and RTT performances (r= >0.80; p<0.05). For contributors to RIA performance, significant correlations were identified between all baseline fitness characteristics and RIA (r = >0.71; p < 0.05). Reliability of the RIA protocol was near perfect with excellent intra-class correlation coefficient (0.87-0.97), good ratio limits of agreement (×/÷ 1.05-1.06) and low coefficient of variations (1.8-2.0%). Conclusions: The current study has demonstrated the RIA to be a simple, valid and reliable field test for RL athletes that can provide coaches with information about their team’s ability to sustain high intensity, multi-directional running efforts.
format	article
author	Anthony Nicholls Anthony Leicht Jonathan Connor Aaron Halliday Kenji Doma
author_facet	Anthony Nicholls Anthony Leicht Jonathan Connor Aaron Halliday Kenji Doma
author_sort	Anthony Nicholls
title	Convergent validity and reliability of a novel repeated agility protocol in junior rugby league players [version 3; peer review: 2 approved]
title_short	Convergent validity and reliability of a novel repeated agility protocol in junior rugby league players [version 3; peer review: 2 approved]
title_full	Convergent validity and reliability of a novel repeated agility protocol in junior rugby league players [version 3; peer review: 2 approved]
title_fullStr	Convergent validity and reliability of a novel repeated agility protocol in junior rugby league players [version 3; peer review: 2 approved]
title_full_unstemmed	Convergent validity and reliability of a novel repeated agility protocol in junior rugby league players [version 3; peer review: 2 approved]
title_sort	convergent validity and reliability of a novel repeated agility protocol in junior rugby league players [version 3; peer review: 2 approved]
publisher	F1000 Research Ltd
publishDate	2021
url	https://doaj.org/article/f9cdd4732c6f4f33bafe58fc902f1d35
work_keys_str_mv	AT anthonynicholls convergentvalidityandreliabilityofanovelrepeatedagilityprotocolinjuniorrugbyleagueplayersversion3peerreview2approved AT anthonyleicht convergentvalidityandreliabilityofanovelrepeatedagilityprotocolinjuniorrugbyleagueplayersversion3peerreview2approved AT jonathanconnor convergentvalidityandreliabilityofanovelrepeatedagilityprotocolinjuniorrugbyleagueplayersversion3peerreview2approved AT aaronhalliday convergentvalidityandreliabilityofanovelrepeatedagilityprotocolinjuniorrugbyleagueplayersversion3peerreview2approved AT kenjidoma convergentvalidityandreliabilityofanovelrepeatedagilityprotocolinjuniorrugbyleagueplayersversion3peerreview2approved
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Convergent validity and reliability of a novel repeated agility protocol in junior rugby league players [version 3; peer review: 2 approved]

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