Journal of Human Sport and Exercise

Is sodium a good hyperhydration strategy in 10k runners?

Raphael Fabricio de Souza, Laion Samy de Oliveira, Dihogo Gama de Matos, Osvaldo Costa Moreira, Thays Costa da Silva, Phil Chilibeck, Alexandre Reis Ferreira, Aristela de Freitas Zanona, Felipe Jose Aidar

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

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.

Keywords

Sodium; Sports performance; Hypertonic saline solution

References

Allen, S., Miller, K. C., Albrecht, J., Garden-Robinson, J., & Blodgett-Salafia, E. (2013). Ad libitum fluid intake and plasma responses after pickle juice, hypertonic saline, or deionized water ingestion. Journal of athletic training, 48(6), 734-740. https://doi.org/10.4085/1062-6050-48.5.04

Antunes-Rodrigues, J., De Castro, M., Elias, L. L., Valença, M. M., & McCann, S. M. (2004). Neuroendocrine control of body fluid metabolism. Physiological reviews, 84(1), 169-208. https://doi.org/10.1152/physrev.00017.2003

Burke, L. M., & Hawley, J. A. (1997). Fluid balance in team sports. Sports medicine, 24(1), 38-54. https://doi.org/10.2165/00007256-199724010-00004

Calzone, W. L., Silva, C., Keefe, D. L., & Stachenfeld, N. S. (2001). Progesterone does not alter osmotic regulation of AVP. American Journal of Physiology-Regulatory, Integrative and Comparative Physiology, 281(6), R2011-R2020. https://doi.org/10.1152/ajpregu.2001.281.6.R2011

Casa, D. J., Clarkson, P. M., & Roberts, W. O. (2005). American College of Sports Medicine roundtable on hydration and physical activity: consensus statements. Current sports medicine reports, 4(3), 115-127. https://doi.org/10.1097/01.CSMR.0000306194.67241.76

Coyle, E. F., & Hamilton, M. (1990). Fluid replacement during exercise: effects on physiological homeostasis and performance. Fluid Homeostasis During Exercise. Carmel, IN: Cooper Publishing, 281-303.

Drumond, M. G., de Carvalho, F. R., & Guimarães, E. M. (2007). Hydration in adolescent athletes - habits and level of knowledge. Braz J Sports Nut, 1(2), 9.

Gigou, P. Y., Dion, T., Asselin, A., Berrigan, F., & Goulet, E. D. (2012). Pre-exercise hyperhydration-induced bodyweight gain does not alter prolonged treadmill running time-trial performance in warm ambient conditions. Nutrients, 4(8), 949-966. https://doi.org/10.3390/nu4080949

Goulet, E. D., Rousseau, S. F., Lamboley, C. R., Plante, G. E., & Dionne, I. J. (2008). Pre-exercise hyperhydration delays dehydration and improves endurance capacity during 2 h of cycling in a temperate climate. Journal of physiological anthropology, 27(5), 263-271. https://doi.org/10.2114/jpa2.27.263

Hamouti, N., Fernández‐Elías, V. E., Ortega, J. F., & Mora‐Rodriguez, R. (2014). Ingestion of sodium plus water improves cardiovascular function and performance during dehydrating cycling in the heat. Scandinavian journal of medicine & science in sports, 24(3), 507-518. https://doi.org/10.1111/sms.12028

Horswill, C. A. (1998). Effective fluid replacement. International journal of sport nutrition, 8(2), 175-295. https://doi.org/10.1123/ijsn.8.2.175

Johannsen, N. M., Lind, E., King, D. S., & Sharp, R. L. (2009). Effect of preexercise electrolyte ingestion on fluid balance in men and women. Medicine and science in sports and exercise, 41(11), 2017-2025. https://doi.org/10.1249/MSS.0b013e3181a82940

Monteiro, M. D. F., & Sobral Filho, D. C. (2004). Physical exercise and blood pressure control. Braz J Sports Med, 513-519.

Morris, D. M., Huot, J. R., Jetton, A. M., Collier, S. R., & Utter, A. C. (2015). Acute Sodium Ingestion Before Exercise Increases Voluntary Water Consumption Resulting in Preexercise Hyperhydration and Improvement in Exercise Performance in the Heat. International journal of sport nutrition and exercise metabolism, 25(5), 456-462. https://doi.org/10.1123/ijsnem.2014-0212

Nebot, V., Drehmer, E., Elvira, L., Sales, S., Sanchis, C., Esquius, L., & Pablos, A. (2015). Effects of voluntary intake of fluids (water and sports drink) in amateur mountain runners. Nutricion hospitalaria, 32(5), 2198-2207.

Perrella, M. M., Noriyuki, P. S., & Rossi, L. (2005). Evaluation of water loss during intense training of rugby. Braz J Sports Med, 11(4), 229-32.

Racinais, S., Alonso, J. M., Coutts, A. J., Flouris, A. D., Girard, O., González‐Alonso, J., & Nassis, G. P. (2015). Consensus recommendations on training and competing in the heat. Scandinavian journal of medicine & science in sports, 25(S1), 6-19. https://doi.org/10.1111/sms.12467

Savoie, F. A., Asselin, A., & Goulet, E. D. (2016). Comparison of sodium chloride tablets–induced, sodium chloride solution–induced, and glycerol-induced hyperhydration on fluid balance responses in healthy men. The Journal of Strength & Conditioning Research, 30(10), 2880-2891. https://doi.org/10.1519/JSC.0000000000001371

Sawka, M. N., Burke, L. M., Eichner, E. R., Maughan, R. J., Montain, S. J., & Stachenfeld, N. S. (2007). American College of Sports Medicine position stand. Exercise and fluid replacement. Medicine and science in sports and exercise, 39(2), 377-390.




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





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