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dc.contributor.authorLara, B
dc.contributor.authorSalinero, J.J.
dc.contributor.authorAreces, F.
dc.contributor.authorRuiz-Vicente, D.
dc.contributor.authorGallo-Salazar, C.
dc.contributor.authorAbián-Vicen, J.
dc.contributor.authorDel Coso, J.
dc.identifier.citationLara, B., Salinero, J. J., Areces, F., Ruiz-Vicente, D., Gallo-Salazar, C., Abián-Vicén, J. and Del Coso, J. (2017), Sweat sodium loss influences serum sodium concentration in a marathon. Scand J Med Sci Sports, 27: 152–160es
dc.description.abstractThe aim of this investigation was to determine the influence of sweat electrolyte concentration on body water and electrolyte homeostasis during a marathon. Fifty-one runners completed a marathon race in a warm and dry environment (24.4 ± 3.6 °C). Runners were classified as low-salt sweaters (n = 21; <30 mmol/L of sweat Na+ concentration), typical sweaters (n = 20; ≥30 and <60 mmol/L of sweat Na+ concentration), and salty sweaters (n = 10; ≥60 mmol/L of sweat Na+ concentration). Before and after the race, body mass and a sample of venous blood were obtained. During the race, sweat samples were collected by using sweat patches, and fluid and electrolyte intake were recorded by using self-reported questionnaires. Low-salt, typical and salty sweaters presented similar sweat rates (0.93 ± 0.2, 0.92 ± 0.29, 0.99 ± 0.21 L/h, respectively), body mass changes (-3.0 ± 1.0, -3.3 ± 1.0, -3.2 ± 0.8%), total Na+ intake (12.7 ± 8.1, 11.5 ± 9.7, 14.5 ± 16.6 mmol), and fluid intake (1.3 ± 0.8, 1.2 ± 0.8, 1.2 ± 0.6 L) during the race. However, salty sweaters presented lower post-race serum Na+ concentration (140.8 ± 1.3 vs 142.5 ± 1.1, 142.4 ± 1.4 mmol/L; P < 0.01) and serum osmolality (297 ± 6 vs 299 ± 5, 301 ± 6 mOsm/kg; P < 0.05) than low-salt and typical sweaters. Sweat electrolyte concentration could influence post-race serum electrolyte concentration in the marathon. However, even the saltiest sweaters did not develop exercise-associated hyponatremia or associated
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.titleSweat sodium loss influences serum sodium concentration in a marathones
dc.journal.titleScand J Med Sci Sportses
dc.subject.areaCiencias de la Actividad Física y del Deportees
dc.subject.keywordfluid balancees
dc.subject.unesco3201.99 Otras

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Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internacional