Additional Clothing Increases Heat Load in Elite Female Rugby Sevens Players.

Henderson, MJ; Chrismas, BCR; Stevens, CJ; Novak, A; Fransen, J; Coutts, AJ; Taylor, L

Additional Clothing Increases Heat Load in Elite Female Rugby Sevens Players.

Henderson, MJ Chrismas, BCR Stevens, CJ Novak, A

Fransen, J

Coutts, AJ Taylor, L

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Publisher:: Human Kinetics
Publication Type:: Journal Article
Citation:: Int J Sports Physiol Perform, 2021, 16, (10), pp. 1-8
Issue Date:: 2021-03-26

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Field	Value	Language
dc.contributor.author	Henderson, MJ
dc.contributor.author	Chrismas, BCR
dc.contributor.author	Stevens, CJ
dc.contributor.author	Novak, A https://orcid.org/0000-0002-2949-4150
dc.contributor.author	Fransen, J https://orcid.org/0000-0003-3355-1848
dc.contributor.author	Coutts, AJ
dc.contributor.author	Taylor, L
dc.date.accessioned	2022-01-27T04:00:33Z
dc.date.available	2020-11-02
dc.date.available	2022-01-27T04:00:33Z
dc.date.issued	2021-03-26
dc.identifier.citation	Int J Sports Physiol Perform, 2021, 16, (10), pp. 1-8
dc.identifier.issn	1555-0265
dc.identifier.issn	1555-0273
dc.identifier.uri	http://hdl.handle.net/10453/153639
dc.description.abstract	PURPOSE: To determine whether elite female rugby sevens players are exposed to core temperatures (Tc) during training in the heat that replicate the temperate match demands previously reported and to investigate whether additional clothing worn during a hot training session meaningfully increases the heat load experienced. METHODS: A randomized parallel-group study design was employed, with all players completing the same approximately 70-minute training session (27.5°C-34.8°C wet bulb globe temperature) and wearing a standardized training ensemble (synthetic rugby shorts and training tee [control (CON); n = 8]) or additional clothing (standardized training ensemble plus compression garments and full tracksuit [additional clothing (AC); n = 6]). Groupwise differences in Tc, sweat rate, GPS-measured external locomotive output, rating of perceived exertion, and perceptual thermal load were compared. RESULTS: Mean (P = .006, ηp2=.88) and peak (P < .001, ηp2=.97) Tc were higher in AC compared with CON during the training session. There were no differences in external load (F4,9 = 0.155, P = .956, Wilks Λ = 0.935, ηp2=.06) or sweat rate (P = .054, Cohen d = 1.09). A higher rating of perceived exertion (P = .016, Cohen d = 1.49) was observed in AC compared with CON. No exertional-heat-illness symptomology was reported in either group. CONCLUSIONS: Player Tc is similar between training performed in hot environments and match play in temperate conditions when involved for >6 minutes. Additional clothing is a viable and effective method to increase heat strain in female rugby sevens players without compromising training specificity or external locomotive capacity.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	Human Kinetics
dc.relation	Australian Rugby Union
dc.relation.ispartof	Int J Sports Physiol Perform
dc.relation.isbasedon	10.1123/ijspp.2020-0620
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	1106 Human Movement and Sports Sciences, 1116 Medical Physiology, 1701 Psychology
dc.subject.classification	Sport Sciences
dc.title	Additional Clothing Increases Heat Load in Elite Female Rugby Sevens Players.
dc.type	Journal Article
utslib.citation.volume	16
utslib.location.activity	United States
utslib.for	1106 Human Movement and Sports Sciences
utslib.for	1116 Medical Physiology
utslib.for	1701 Psychology
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
pubs.organisational-group	/University of Technology Sydney/Strength - CHT - Health Technologies
pubs.organisational-group	/University of Technology Sydney/Centre for Health Technologies (CHT)
utslib.copyright.status	open_access	*
dc.date.updated	2022-01-27T04:00:31Z
pubs.issue	10
pubs.publication-status	Published online
pubs.volume	16
utslib.citation.issue	10

Abstract:

PURPOSE: To determine whether elite female rugby sevens players are exposed to core temperatures (Tc) during training in the heat that replicate the temperate match demands previously reported and to investigate whether additional clothing worn during a hot training session meaningfully increases the heat load experienced. METHODS: A randomized parallel-group study design was employed, with all players completing the same approximately 70-minute training session (27.5°C-34.8°C wet bulb globe temperature) and wearing a standardized training ensemble (synthetic rugby shorts and training tee [control (CON); n = 8]) or additional clothing (standardized training ensemble plus compression garments and full tracksuit [additional clothing (AC); n = 6]). Groupwise differences in Tc, sweat rate, GPS-measured external locomotive output, rating of perceived exertion, and perceptual thermal load were compared. RESULTS: Mean (P = .006, ηp2=.88) and peak (P < .001, ηp2=.97) Tc were higher in AC compared with CON during the training session. There were no differences in external load (F4,9 = 0.155, P = .956, Wilks Λ = 0.935, ηp2=.06) or sweat rate (P = .054, Cohen d = 1.09). A higher rating of perceived exertion (P = .016, Cohen d = 1.49) was observed in AC compared with CON. No exertional-heat-illness symptomology was reported in either group. CONCLUSIONS: Player Tc is similar between training performed in hot environments and match play in temperate conditions when involved for >6 minutes. Additional clothing is a viable and effective method to increase heat strain in female rugby sevens players without compromising training specificity or external locomotive capacity.

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http://hdl.handle.net/10453/153639