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Sodium ion concentration vs. sweat rate relationship in humans.
J Appl Physiol (1985). 2007 Sep; 103(3):990-4.JA

Abstract

The purpose of this study was to determine the effect of active heat acclimation on the sweat osmolality and sweat sodium ion concentration vs. sweat rate relationship in humans. Eight healthy male volunteers completed 10 days of exercise in the heat. The mean exercising heart rate and core temperature were significantly decreased (P < 0.05) by 18 beats/min and 0.6 degrees C, respectively, following heat acclimation. Furthermore, sweat osmolality and the sweat sodium ion concentration vs. sweat rate relationships were shifted to the right. Specifically, the slopes of the relationships were not affected by heat acclimation. Rather, heat acclimation significantly reduced the y-intercepts of the sweat osmolality and sweat sodium relationships with sweat rate by 28 mosmol/kgH(2)O and 15 mmol/l, respectively. Thus there was a significantly lower sweat sodium ion concentration for a given sweat rate following heat acclimation. These results suggest that heat acclimation increases the sodium ion reabsorption capacity of the human eccrine sweat gland.

Authors+Show Affiliations

School of Exercise and Nutritional Sciences, San Diego State University, San Diego, California 92182, USA. mbuono@mail.sdsu.eduNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17600161

Citation

Buono, Michael J., et al. "Sodium Ion Concentration Vs. Sweat Rate Relationship in Humans." Journal of Applied Physiology (Bethesda, Md. : 1985), vol. 103, no. 3, 2007, pp. 990-4.
Buono MJ, Ball KD, Kolkhorst FW. Sodium ion concentration vs. sweat rate relationship in humans. J Appl Physiol (1985). 2007;103(3):990-4.
Buono, M. J., Ball, K. D., & Kolkhorst, F. W. (2007). Sodium ion concentration vs. sweat rate relationship in humans. Journal of Applied Physiology (Bethesda, Md. : 1985), 103(3), 990-4.
Buono MJ, Ball KD, Kolkhorst FW. Sodium Ion Concentration Vs. Sweat Rate Relationship in Humans. J Appl Physiol (1985). 2007;103(3):990-4. PubMed PMID: 17600161.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Sodium ion concentration vs. sweat rate relationship in humans. AU - Buono,Michael J, AU - Ball,Kimberly D, AU - Kolkhorst,Fred W, Y1 - 2007/06/28/ PY - 2007/6/30/pubmed PY - 2007/12/21/medline PY - 2007/6/30/entrez SP - 990 EP - 4 JF - Journal of applied physiology (Bethesda, Md. : 1985) JO - J Appl Physiol (1985) VL - 103 IS - 3 N2 - The purpose of this study was to determine the effect of active heat acclimation on the sweat osmolality and sweat sodium ion concentration vs. sweat rate relationship in humans. Eight healthy male volunteers completed 10 days of exercise in the heat. The mean exercising heart rate and core temperature were significantly decreased (P < 0.05) by 18 beats/min and 0.6 degrees C, respectively, following heat acclimation. Furthermore, sweat osmolality and the sweat sodium ion concentration vs. sweat rate relationships were shifted to the right. Specifically, the slopes of the relationships were not affected by heat acclimation. Rather, heat acclimation significantly reduced the y-intercepts of the sweat osmolality and sweat sodium relationships with sweat rate by 28 mosmol/kgH(2)O and 15 mmol/l, respectively. Thus there was a significantly lower sweat sodium ion concentration for a given sweat rate following heat acclimation. These results suggest that heat acclimation increases the sodium ion reabsorption capacity of the human eccrine sweat gland. SN - 8750-7587 UR - https://www.unboundmedicine.com/medline/citation/17600161/Sodium_ion_concentration_vs__sweat_rate_relationship_in_humans_ L2 - https://journals.physiology.org/doi/10.1152/japplphysiol.00015.2007?url_ver=Z39.88-2003&amp;rfr_id=ori:rid:crossref.org&amp;rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -