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AuthorHenderson, Mitchell J.
AuthorChrismas, Bryna C.R.
AuthorStevens, Christopher J.
AuthorCoutts, Aaron J.
AuthorTaylor, Lee
Available date2024-05-30T07:24:56Z
Publication Date2020-02-05
Publication NameInternational Journal of Sports Physiology and Performance
Identifierhttp://dx.doi.org/10.1123/ijspp.2019-0375
CitationHenderson, M. J., Chrismas, B. C., Stevens, C. J., Coutts, A. J., & Taylor, L. (2020). Changes in core temperature during an elite female rugby sevens tournament. International journal of sports physiology and performance, 15(4), 571-580.
ISSN1555-0265
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85082529759&origin=inward
URIhttp://hdl.handle.net/10576/55662
AbstractPurpose: To characterize player core temperature (Tc) across a World Rugby Women's Sevens Series tournament day (WRWSS) and determine the efficacy of commonly employed cold-water-immersion (CWI) protocols. Methods: Tc was measured in 12 elite female rugby sevens athletes across 3 games (G1¨C3) from day 1 of the Sydney WRWSS tournament. Symptoms of exertional heat illness, perceptual scales, CWI details, playing minutes, external-load data (measured by global positioning systems), and wet-bulb globe temperature (range 18.5°C-20.1°C) were also collected. Linear mixed models and magnitude-based inferences were used to assess differences in Tc between periods (G1-3 and warm-ups [WU]). Results: Average Tc was "very likely" lower (effect size; ±90% confidence limit .0.33; ±0.18) in G1 than in G2. Peak Tc was "very likely" (0.71; ±0.28) associated with increased playing time. CWI did not remove the accumulated Tc due toWUand match-play activity (~1°C-2°C rise in Tc still present compared with Tc at WU onset for players ≥6-min match play). Conclusions: Elite WRWSS athletes experienced high Tc during WU (Tc peak 37.9-39.0°C) and matches (Tc peak 37.9-39.8°C), a magnitude known to reduce intermittent high-intensity physical performance (≥39°C). The CWI protocol resulted in players (≥6-min match play) with ~1°C to 2°C raised Tc compared with Tc at WU onset.
SponsorThis work was funded by: - Aspire Zone Foundation (Doha, Qatar). - The RTP scholarship (Australia). - Rugby Australia.
Languageen
PublisherHuman Kinetics Publishers Inc.
SubjectAthlete
Heat
Hyperthermia
Telemetric
TitleChanges in core temperature during an elite female rugby sevens tournament
TypeArticle
Pagination571-580
Issue Number4
Volume Number15
ESSN1555-0273
dc.accessType Abstract Only


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