Is sodium a good hyperhydration strategy in 10k runners?

Authors

  • Raphael Fabricio de Souza Federal University of Sergipe Racing Club at the Federal University of Sergipe Federal University of Pernambuco, Brazil
  • Laion Samy de Oliveira Federal University of Sergipe, Brazil
  • Dihogo Gama de Matos Federal University of Sergipe Trás-os-Montes e Alto Douro University, Brazil
  • Osvaldo Costa Moreira Federal University of Viçosa University of Leon, Brazil
  • Thays Costa da Silva Federal University of Sergipe, Brazil
  • Phil Chilibeck University of Saskatchewan, Canada
  • Alexandre Reis Ferreira Federal University of Sergipe, Brazil
  • Aristela de Freitas Zanona Federal University of Sergipe Federal University of Pernambuco, Brazil
  • Felipe Jose Aidar Federal University of Sergipe, Brazil

DOI:

https://doi.org/10.14198/jhse.2018.134.10

Keywords:

Sodium, Sports performance, Hypertonic saline solution

Abstract

The objective of the present study was to evaluate the effect of pre-exercise hyperhydration with sodium (PEHS), on the state of hydration and performance in runners of a 10K. Ten male runners (age 40.5 ± 9.7 yrs, weight 72.5 ± 8.4 kg, body fat 18.8 ± 4.5%) participated in the study and performed 10 km of street running under two different forms of prehydration: pre-exercise hydration (PEH), consisting of water intake ad libitum, and pre-exercise sodium hyperhydration (PEHS), consisting of sodium ingestion (12 mg of sodium for each 5 mL of water) diluted 1 h before the test. The variables evaluated were heart rate (HR), body temperature (BT), body mass (BM), blood pressure (BP), relative dehydration (RD), absolute dehydration (AD), total ingested water (TH2OING), degree of dehydration (DD), sweating rate (SR), specific gravity of urine (SGU), urine pH, and performance time (PT). There was no difference between intervention groups in the variables HR, BT, BM, BP, SGU, urine pH, and PT. RD (0.76 ± 0.41 kg vs. 1.16 ± 0.43 kg; Cohen’s d = 0.95; p = 0.042); AD (0.63 ± 0.36 kg vs. 0.99 ± 0.43 kg; Cohen’s d = 0.90; p = 0.038); DD (0.63 ± 0.52% vs. 1.35 ± 0.56%; Cohen’s d = 1.33; p = 0.009); SR (2255.03 ± 1297.25 mL vs. 3550.06 ± 1527.35 mL; Cohen’s d = 0.91; p = 0.048) were lower in the state of PEHS. PEH presented greater TH2OING (0.16 ± 0.12 mL vs. 0.34 ± 0.41 mL; Cohen’s d = 0.59; p = 0.008). It was concluded that PEHS produces better hydration in runners during long distance running.

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Published

2018-12-10

How to Cite

de Souza, R. F., de Oliveira, L. S., de Matos, D. G., Moreira, O. C., da Silva, T. C., Chilibeck, P., Ferreira, A. R., Zanona, A. de F., & Aidar, F. J. (2018). Is sodium a good hyperhydration strategy in 10k runners?. Journal of Human Sport and Exercise, 13(4), 823–831. https://doi.org/10.14198/jhse.2018.134.10

Issue

Vol. 13 No. 4

Section

Sport Medicine, Nutrition & Health

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