Thermoregulatory Demands of Elite Professional America’s Cup Yacht Racing.

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dc.contributor.author Neville, V en
dc.contributor.author Gant, N en
dc.contributor.author Folland, JP en
dc.date.accessioned 2014-10-24T04:04:21Z en
dc.date.issued 2010-06 en
dc.identifier.citation Scandinavian Journal of Medicine and Science in Sports, 2010, 20 (3), pp. 475 - 484 en
dc.identifier.uri http://hdl.handle.net/2292/23336 en
dc.description.abstract America's Cup yacht racing predominantly occurs during the summer months under hot and humid conditions, with athletes exposed to the environment for prolonged periods, and yet the thermoregulatory responses to competitive sailing are largely unappreciated. This study aimed to assess the thermoregulatory responses to elite professional big-boat yacht racing, according to crew position and upwind and downwind sailing. Intestinal (Tcore) and skin temperature, fluid balance and regional sweat compositions were measured in two America's Cup crews (n=32) during 100 min of racing. The environmental conditions were as follows: 32 °C, 52% RH and 5 m/s wind speed. Subjective race intensity was moderate. Bowmen recorded the greatest elevation in the heart rate (184 ± 10 beats/min) and Tcore (39.2 °C, P<0.01). Both heart rate and Tcore were higher during downwind sailing (P<0.001). Regional skin temperatures were significantly different according to site (P=0.05), with tibia being the lowest (33.3 ± 1.2 °C). The mean sweat loss during racing was 1.34 ± 0.58 L/h (range: 0.44–2.40 L/h), with bowmen experiencing the greatest loss of sweat (3.7 ± 0.9% of body mass). The mean fluid intake was highly correlated to sweat loss (r=0.74, P<0.001), with 72 ± 41% of sweat losses replaced. The mean sodium concentration of sweat was 27.2 ± 9.2 mmol/L (range: 12.0–43.5 mmol/L) and the total NaCl loss during sailing was 3.8 ± 2.4 g (range 0.7–10.0 g). America's Cup sailing is a demanding sport that presents considerable challenges to thermoregulation, fluid and electrolyte balance. Certain crew roles (bowmen) present an increased risk of developing exertional heat illness, and for the majority of crew downwind sailing results in greater thermal strain than upwind sailing – which may have implications for clothing selection and boat design. en
dc.relation.ispartofseries Scandinavian Journal of Medicine and Science in Sports en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from http://www.sherpa.ac.uk/romeo/issn/0905-7188/ en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.title Thermoregulatory Demands of Elite Professional America’s Cup Yacht Racing. en
dc.type Journal Article en
dc.identifier.doi 10.1111/j.1600-0838.2009.00952.x en
pubs.issue 3 en
pubs.begin-page 475 en
pubs.volume 20 en
pubs.end-page 484 en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Article en
pubs.elements-id 196225 en
pubs.org-id Science en
pubs.org-id Exercise Sciences en
pubs.record-created-at-source-date 2010-12-14 en


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