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Responses to V8 supercar driving in hot conditions

Brearley, Matthew B., Finn, James P. and Royal, K. A. (2002). Responses to V8 supercar driving in hot conditions. Journal of Science and Medicine in Sport,5(4):38-38.

Document type: Journal Article
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Title Responses to V8 supercar driving in hot conditions
Author Brearley, Matthew B.
Finn, James P.
Royal, K. A.
Journal Name Journal of Science and Medicine in Sport
Publication Date 2002
Volume Number 5
Issue Number 4
ISSN 1440-2440   (check CDU catalogue open catalogue search in new window)
Start Page 38
End Page 38
Total Pages 1
Publisher Sports Medicine Australia
Field of Research 1106 - Human Movement and Sports Science
HERDC Category C1 - Journal Article (DEST)
Abstract Two male V8 Supercar drivers (age: 28.4, 31.3 yrs; peak VO2: 60.0, 47.3; height: 1.77, 1.79 m; body mass: 71.0, 78.7 kg) were studied during the Darwin round of the 2002 V8 Supercar championship to examine thermal, cardiovascular and perceptual responses to competitive driving in hot conditions. Urine specific gravity (USG) and colour was determined prior to each race. Body mass, thermal strain and thermal discomfort were measured pre- and post-race. An ingestible telemetric pill (CorTemp, HTI Technologies, USA) permitted continuous measurement of core body temperature while driving. Race 1 was contested over 52km while races 2 and 3 were 100km. A peak core temperature of 39.7oC was observed following race 2 (cabin temperature 52.1oC, WBGT Index 30.7oC). Although both drivers used cooling interventions, they generally perceived their post-race body temperature as very hot causing them to feel uncomfortable. While body mass loss was limited to 1% during the races, 3% was lost throughout the 30 hours spanning practice to race 3 completion. One driver was well hydrated prior to races (Usg 1.004, 1.007, 1.007), while the hydration status of the other varied (1.023, 1.007, 1.028). The data demonstrates that V8 Supercar drivers can attain core body temperatures approaching hyperthermic values which induce high levels of perceived thermal strain from short driving bouts in hot conditions.
Additional Notes Abstract only published. Presented at Australian Conference of Science and Medicine in Sport, 13 October 2002.
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Created: Mon, 09 Mar 2009, 10:31:31 CST by Sarena Wegener