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Appears in Collections:Faculty of Health Sciences and Sport Journal Articles
Peer Review Status: Refereed
Title: Zinc loss in sweat of athletes exercising in hot and neutral temperatures
Author(s): Tipton, Kevin
Green, Nancy R
Haymes, Emily M
Waller, Mary F
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Keywords: Zinc
Exercise physiology
Sports physiology
Physical Endurance
Physical Fitness.
Issue Date: Sep-1993
Date Deposited: 1-May-2013
Citation: Tipton K, Green NR, Haymes EM & Waller MF (1993) Zinc loss in sweat of athletes exercising in hot and neutral temperatures. International Journal of Sport Nutrition, 3 (3), pp. 261-271.
Abstract: Zinc (Zn) loss from sweat of 9 male and 9 female athletes exercising under hot (35 degrees C, HE) and neutral (25 degrees C, NE) conditions was examined. Subjects exercised at 50% VO2max on a cycle ergometer for 1 hr during each trial. Cell-free sweat samples were analyzed for Zn by atomic absorption spectrophotometry. There was a significant interaction of time, gender, and temperature for whole-body sweat rates (WBSR). WBSR for males were higher during both trials and at each time. WBSR from the second half of exercise were higher than those from the first half for both sexes and temperature conditions. Sweat Zn concentration was higher in the NE than in the HE, but when the sweat rates were included, the rate of Zn loss was no different between HE and NE. Zn concentration of the sweat for the first half of exercise was over twice that of the second half. Sweat Zn concentration of the men was no different than that of the women; however, due to greater sweat rate, men had significantly higher Zn losses. Although total Zn losses are estimated to be relatively low compared to the RDA, exercise at moderate intensities may increase surface Zn losses.
Rights: Publisher allows this work to be made available in this repository. Published in International Journal of Sport Nutrition and Exercise Metabolism, 3.3, 09/1993, pp.261-271 by Human Kinetics with the following policy: The author retains the right to post an electronic version of the finalized article on electronic repositories controlled by the authors’ institution, provided that the electronic version is in PDF or other image capturing format.

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