HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH SEARCH RESULT		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Free Full Text (PDF) Free All Versions of this Article: 96/5/1867    most recent 00979.2003v1 Submit a response Alert me when this article is cited Alert me when eLetters are posted Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Web of Science (13) Citing Articles via Google Scholar Google Scholar Articles by Arngrïmsson, S. A. Articles by Cureton, K. J. Search for Related Content PubMed PubMed Citation Articles by Arngrïmsson, S. A. Articles by Cureton, K. J.

Cooling vest worn during active warm-up improves 5-km run performance in the heat

Department of Exercise Science, University of Georgia, Athens, Georgia 30602-6554

Submitted 10 September 2003 ; accepted in final form 4 December 2003

We investigated whether a cooling vest worn during an active warm-up enhances 5-km run time in the heat. Seventeen competitive runners (9 men, maximal oxygen uptake = 66.7 ± 5.9 ml·kg^-1·min^-1; 8 women, maximal oxygen uptake = 58.0 ± 3.2 ml·kg^-1·min^-1) completed two simulated 5-km runs on a treadmill after a 38-min active warm-up during which they wore either a T-shirt (C) or a vest filled with ice (V) in a hot, humid environment (32°C, 50% relative humidity). Wearing the cooling vest during warm-up significantly (P < 0.05) blunted increases in body temperature, heart rate (HR), and perception of thermal discomfort during warm-up compared with control. At the start of the 5-km run, esophageal, rectal, mean skin, and mean body temperatures averaged 0.3, 0.2, 1.8, and 0.4°C lower; HR averaged 11 beats/min lower; and perception of thermal discomfort (5-point scale) averaged 0.6 point lower in V than C. Most of these differences were eliminated during the first 3.2 km of the run, and these variables were not different at the end. The 5-km run time was significantly lower (P < 0.05) by 13 s in V than C, with a faster pace most evident during the last two-thirds of the run. We conclude that a cooling vest worn during active warm-up by track athletes enhances 5-km run performance in the heat. Reduced thermal and cardiovascular strain and perception of thermal discomfort in the early portion of the run appear to permit a faster pace later in the run.

body temperature; cardiovascular strain; exercise; running; thermo-regulation

This article has been cited by other articles:

				V. Goosey-Tolfrey, M. Swainson, C. Boyd, G. Atkinson, and K. Tolfrey The effectiveness of hand cooling at reducing exercise-induced hyperthermia and improving distance-race performance in wheelchair and able-bodied athletes J Appl Physiol, July 1, 2008; 105(1): 37 - 43. [Abstract] [Full Text] [PDF]

				O. Jay, L. M. Gariepy, F. D. Reardon, P. Webb, M. B. Ducharme, T. Ramsay, and G. P. Kenny A three-compartment thermometry model for the improved estimation of changes in body heat content Am J Physiol Regulatory Integrative Comp Physiol, January 1, 2007; 292(1): R167 - R175. [Abstract] [Full Text] [PDF]