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Cited by 93Thermoregulation and physiological responsesCardiovascular and exercise physiologyExercise and Physiological Responses

Effect of Heat Acclimation on Sweat Minerals

CHINEVERE, TROY D., KENEFICK, ROBERT W., CHEUVRONT, SAMUEL N., LUKASKI, HENRY C., SAWKA, MICHAEL N.·2008·Medicine & Science in Sports & Exercise
DOI 10.1249/mss.0b013e3181641c04
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Abstract

PURPOSE: This study examined the impact of 10 d of exercise-heat acclimation on sweat mineral concentrations. METHODS: Eight male subjects walked on a treadmill at 3.5 mph, 4% grade for 100 continuous minutes or until rectal temperature reached 39.5 degrees C on 10 consecutive days in an environmental chamber set at 45 degrees C, 20% relative humidity. Arm sweat samples were collected during the first 30 min of exercise-heat stress on days 1 and 10 using a polyethylene arm glove. RESULTS: Final core temperature and HR values were significantly lower (P < 0.05) on day 10 versus day 1. Whole-body sweating rates increased by approximately 6% (P = 0.12). Sweat sodium concentration on day 10 (36.22 +/- 7.22 mM) was significantly lower than day 1 (54.49 +/- 16.18 mM) (P < 0.05). Sweat mineral concentrations of calcium (approximately 29%), copper (approximately 50%), and magnesium (approximately 43%) were also significantly lower on day 10 versus day 1 of heat acclimation (P < 0.05). A trend for lower sweat iron (approximately 75%; P = 0.07) and zinc (approximately 23%; P = 0.10) concentrations were observed from day 1 to day 10. The estimated hourly sweat mineral losses (arm concentration x whole-body sweat rate) were reduced for calcium (approximately 27%), copper (approximately 46%), and magnesium (approximately 42%) (P < 0.05), but not iron (75%) or zinc (approximately 16%) (P > 0.05), from day 1 to day 10. CONCLUSION: Exercise-heat acclimation conserves arm sweat mineral concentrations and possibly whole-body sweat losses of calcium, copper, and magnesium, and may reduce sweat iron and zinc concentrations.

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  • Some initial studies seemed to indicate a conservation of sweat trace mineral concentrations with heat acclimation and even throughout the course of a single bout of exercise.

    “Some initial studies seemed to indicate a conservation of sweat trace mineral concentrations with heat acclimation (Chinevere et al. 2008; Hoshi et al. 2002; Klesges et al. 1996) and even throughout the course of a single bout of exercise (DeRuisseau et al. 2002; Montain et al. 2007; Waller and Haymes 1996).”

    From Physiological mechanisms determining eccrine sweat composition (2020) · cites this paper as Chinevere et al. 2008

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Authors
CHINEVERE, T. D., KENEFICK, R. W., CHEUVRONT, S. N., LUKASKI, H. C., & SAWKA, M. N.
Affiliations
  • U.S. Army Research Institute of Environmental Medicine (US)
  • Grand Forks Human Nutrition Research Center (US)
ORCID
Venue
Medicine & Science in Sports & Exercise
Publisher
Ovid Technologies (Wolters Kluwer Health)
Published
2008-05
Volume
40
Issue
5
Pages
886-891
ISSN
0195-9131 (ISSN-L)
DOI
10.1249/mss.0b013e3181641c04
OpenAlex
W2141108261
Cited by
93
References
39
Citations by year
2026: 8 · 2025: 4 · 2024: 2 · 2023: 3 · 2022: 3 · 2021: 7 · 2020: 4 · 2019: 11 · 2018: 6 · 2017: 5 · 2016: 4 · 2015: 5 · 2014: 8 · 2013: 5 · 2012: 5
FWCI
2.71
Type
journal article
Language
en
Open access
closed
Locations
  • Medicine & Science in Sports & Exercise (publishedVersion)
  • PubMed (publishedVersion)
  • Defense Technical Information Center (DTIC) (submittedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Thermoregulation and physiological responses
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
  • Health Sciences › Medicine › Rehabilitation › Exercise and Physiological Responses
Keywords
heat acclimation, sweat sodium, calcium, copper, magnesium, iron, zinc, exercise in the heat, core body temperature
MeSH terms
Adult, Calcium, Copper, Hot Temperature, Humans, Iron, Magnesium, Male, Sweat, Sweating, Zinc, Heat Stress Disorders

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