Current Sports Medicine Reports

, Volume 6, Issue 4, pp 237–240

The importance of salt in the athlete’s diet

Article

Abstract

Salt consists of sodium and chloride, and is important for normal physiologic function. High sweat rates in athletes result in loss of both fluids and sodium. Fluid replacement with hypotonic solutions will lead to incomplete rehydration and possible complications such as hyponatremia, decreased performance, heat cramps, or other heat-related illness. There is significant individual variation in sodium loss during activity. In some the losses can be replaced by normal dietary intake, whereas in others the losses can be dramatic and increased dietary intake is essential. There are various methods to increase sodium intake, such as increased use of table salt on foods, salty snacks, adding salt to sports drinks, and use of salt tablets. Emphasis on replacement of fluids is also important, but care must be taken to avoid overhydration. Simple measures such as recording daily pre- and postexercise body weight can aid in making fluid and sodium ingestion decisions; in some cases, a comprehensive evaluation is necessary.

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References and Recommended Reading

  1. 1.
    American College of Sports Medicine, American Dietetic Association, Dietitians of Canada: Joint position statement: nutrition and athletic performance. Med Sci Sports Exerc 2000, 32:2130–2145.CrossRefGoogle Scholar
  2. 2.
    Convertino VA, Armstrong LE, Coyle EF, et al.: American College of Sports Medicine position stand. Exercise and fluid replacement. Med Sci Sports Exerc 1996, 28:i–ix.PubMedGoogle Scholar
  3. 3.
    Casa DJ, Armstrong LE, Hillman SD, et al.: National Athletic Trainers’ Association position statement: fluid replacement for athletes. J Athlet Train 2000, 35:212–224.Google Scholar
  4. 4.
    Sawka MN M, Burke L, Eichner ER, et al.: American College of Sports Medicine position stand: exercise and fluid replacement. Med Sci Sports Exerc 2007, 34:377–390.Google Scholar
  5. 5.
    Coyle EF: Fluid and fuel intake during exercise. J Sports Sci 2004, 22:39–55.PubMedCrossRefGoogle Scholar
  6. 6.
    Sharp RL: Role of sodium in fluid homeostasis with exercise. J Am Coll Nutr 2006, 25:231S–239S.PubMedGoogle Scholar
  7. 7.
    Bergeron MF: Heat cramps: fluid and electrolyte challenges during tennis in the heat. J Sci Med Sport 2003, 6:19–27.PubMedCrossRefGoogle Scholar
  8. 8.
    Shirreffs SM, Aragon-Vargas LF, Chamorro M, et al.: The sweating response of elite professional soccer players to training in the heat. Int J Sports Med 2005, 26:90–95.PubMedCrossRefGoogle Scholar
  9. 9.
    Folkes Godek SF, Bartolozzi AR, Godek JJ: Sweat rate and fluid turnover in American football players compared with runners in a hot and humid environment. Br J Sports Med 2005, 39:205–211.CrossRefGoogle Scholar
  10. 10.
    Folkes Godek SF, Godek JJ, Bartolozzi AR: Hydration status in college football players during consecutive days of twice-a-day preseason practices. Am J Sports Med 2005, 33:843–851.CrossRefGoogle Scholar
  11. 11.
    Maughan RJ, Leiper JB: Sodium intake and post-exercise rehydration in man. Eur J Appl Physiol Occup Physiol 1995, 71:311–319.PubMedCrossRefGoogle Scholar
  12. 12.
    Shirreffs SM, Maughan RJ: Volume repletion after exercise-induced volume depletion in humans: replacement of water and sodium losses. Am J Physiol Renal Physiol 1998, 274:868–875.Google Scholar
  13. 13.
    Rehrer N: Fluid and electrolyte balance in ultra-endurance sport. Sports Med 2001, 31:701–715.PubMedCrossRefGoogle Scholar
  14. 14.
    Clapp A, Bishop P, Smith J, Mansfield E: Effects of carbohydrate-electrolyte content of beverages on voluntary hydration in a simulated industrial environment. AIHAJ 2000, 61:692–699.PubMedCrossRefGoogle Scholar
  15. 15.
    Layzer, RB: The origin of muscle fasciculations and cramps. Muscle Nerve 1994, 17:1243–1249.PubMedCrossRefGoogle Scholar
  16. 16.
    Casa DJ, Clarkson PM, Roberts WO: American College of Sports Medicine roundtable on hydration and physical activity: consensus statements. Curr Sports Med Rep 2005, 4:115–127.PubMedGoogle Scholar
  17. 17.
    Bergeron MF: Heat cramps during tennis: a case report. Int J Sport Nutr 1996, 6:62–68.PubMedGoogle Scholar
  18. 18.
    Stofan JR, Zachwieja JJ, Horswill CA, et al.: Sweat and sodium losses in NCAA Division I football players with a history of whole-body muscle cramping. Med Sci Sports Exerc 2003, 35:S48.Google Scholar
  19. 19.
    Ruth JL, Wassner SJ: Body composition: salt and water. Pediatr Rev 2006, 27:181–188.PubMedCrossRefGoogle Scholar
  20. 20.
    Murray B, Eichner R: Hyponatremia of exercise. Curr Sports Med Rep 2004, 3:117–118.PubMedGoogle Scholar
  21. 21.
    Seto C, Way D, O’Connor N: Environmental illness in athletes. Clin Sports Med 2005, 24:695–718.PubMedCrossRefGoogle Scholar
  22. 22.
    Shirreffs SM, Sawka MN, Stone M: Water and electrolyte needs for football training and match-play. J Sports Sci 2006, 24:699–707.PubMedCrossRefGoogle Scholar
  23. 23.
    Bergeron, MF: Sodium: the forgotten nutrient. Sports Science Exchange 2000, 13:1–4.Google Scholar
  24. 24.
    Bergeron M: Averting heat cramps. Phys Sportsmed 2002, 30:14.Google Scholar

Copyright information

© Current Medicine Group LLC 2007

Authors and Affiliations

  1. 1.NORTH CenterSanford Sports MedicineSioux FallsUSA

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