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Seawater Hydration Modulates IL-6 and Apelin Production during Triathlon Events: A Crossover Randomized Study

Author

Listed:
  • Olivia González Acevedo

    (Institute of Nutrition and Food Technology “José Mataix”, Biomedical Research Center, University of Granada, 18106 Granada, Spain
    These authors contributed equally to this work.)

  • Jerónimo Aragón-Vela

    (Institute of Nutrition and Food Technology “José Mataix”, Biomedical Research Center, University of Granada, 18106 Granada, Spain
    Department of Physiology, School of Pharmacy, University of Granada, Campus de Cartuja s/n, 18071 Granada, Spain
    These authors contributed equally to this work.)

  • Juan Carlos De la Cruz Márquez

    (Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, 18001 Granada, Spain)

  • Manuel Martínez Marín

    (Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, 18001 Granada, Spain)

  • Rafael A. Casuso

    (Institute of Nutrition and Food Technology “José Mataix”, Biomedical Research Center, University of Granada, 18106 Granada, Spain
    Department of Health Sciences, Loyola Andalucía University, 41704 Sevilla, Spain)

  • Jesús R. Huertas

    (Institute of Nutrition and Food Technology “José Mataix”, Biomedical Research Center, University of Granada, 18106 Granada, Spain
    Department of Physiology, School of Pharmacy, University of Granada, Campus de Cartuja s/n, 18071 Granada, Spain)

Abstract

A triathlon is an endurance event in which athletes need an efficient hydration strategy since hydration is restricted at different stages. However, it seems that seawater intake can be a suitable hydration alternative for this type of endurance event. Therefore, the aim of this study was to evaluate the efficacy of seawater hydration during a triathlon on cytokine production. Fifteen trained male triathletes (age = 38.8 ± 5.62 years old; BMI = 22.58 ± 2.51 kg/m 2 ) randomly performed three triathlons, one of them consuming seawater (Totum SPORT, Laboratories Quinton International, S.L., Valencia, Spain), the other one consuming tap water ad libitum, and the last a physiologic saline solution as placebo. The triathlon consisted of an 800 m swim, a 90 km bike ride, and a 10 km run. Blood samples were taken at rest and after training, where markers of inflammation, hemoglobin, and hematocrit concentration were assessed. While the seawater was not ergogenic, it significantly increased the release of IL-6 and apelin post-exercise. However, no differences were found between the fractalkine, IL-15, EPO, osteonectin, myostatin, oncostatin, irisin, FSTL1, osteocrin, BDNF, and FGF-21 values over those of the placebo group. The present study demonstrates that hydration with seawater stimulates myokine production, which could lead to improved performance recovery after exercise.

Suggested Citation

  • Olivia González Acevedo & Jerónimo Aragón-Vela & Juan Carlos De la Cruz Márquez & Manuel Martínez Marín & Rafael A. Casuso & Jesús R. Huertas, 2022. "Seawater Hydration Modulates IL-6 and Apelin Production during Triathlon Events: A Crossover Randomized Study," IJERPH, MDPI, vol. 19(15), pages 1-11, August.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:15:p:9581-:d:879981
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    References listed on IDEAS

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    1. James A. Timmons & Keith Baar & Peter K. Davidsen & Philip J. Atherton, 2012. "Is irisin a human exercise gene?," Nature, Nature, vol. 488(7413), pages 9-10, August.
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