Practical precooling: Effect on cycling time trial performance in warm conditions

Quod, M, Martin, D, Laursen, P, Gardner, A, Halson, S, Marino, F, Tate, M, Mainwaring, D, Gore, C and Hahn, A 2008, 'Practical precooling: Effect on cycling time trial performance in warm conditions', Journal of Sports Sciences, vol. 26, no. 14, pp. 1477-1487.


Document type: Journal Article
Collection: Journal Articles

Title Practical precooling: Effect on cycling time trial performance in warm conditions
Author(s) Quod, M
Martin, D
Laursen, P
Gardner, A
Halson, S
Marino, F
Tate, M
Mainwaring, D
Gore, C
Hahn, A
Year 2008
Journal name Journal of Sports Sciences
Volume number 26
Issue number 14
Start page 1477
End page 1487
Total pages 11
Publisher Routledge
Abstract The purpose of this study was to compare the effects of two practical precooling techniques (skin cooling vs. skin + core cooling) on cycling time trial performance in warm conditions. Six trained cyclists completed one maximal graded exercise test ([V]O2peak 71.4 ± 3.2 ml · kg-1 · min-1) and four -40 min laboratory cycling time trials in a heat chamber (34.3ºC ± 1.1ºC; 41.2% ± 3.0% rh) using a fixed-power/variable-power format. Cyclists prepared for the time trial using three techniques administered in a randomised order prior to the warm-up: (1) no cooling (control), (2) cooling jacket for 40 min (jacket) or (3) 30-min water immersion followed by a cooling jacket application for 40 min (combined). Rectal temperature prior to the time trial was 37.8ºC ± 0.1ºC in control, similar in jacket (37.8ºC ± 0.3ºC) and lower in combined (37.1ºC ± 0.2ºC, P < 0.01). Compared with the control trial, time trial performance was not different for jacket precooling (-16 ± 36 s, -0.7%; P = 0.35) but was faster for combined precooling (-42 ± 25 s, -1.8%; P = 0.009). In conclusion, a practical combined precooling strategy that involves immersion in cool water followed by the use of a cooling jacket can produce decrease in rectal temperature that persist throughout a warm-up and improve laboratory cycling time trial performance in warm conditions.
Subject Exercise Physiology
Keyword(s) cooling jacket
cold water immersion
core temperature
fatigue
DOI - identifier 10.1080/02640410802298268
ISSN 0264-0414
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