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Clin J Sport Med. 1995;5(2):116-22.

Fluid and electrolyte status in athletes receiving medical care at an ultradistance triathlon.

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Department of Orthopaedic Surgery, University of Tennessee-Campbell Clinic, Memphis 38163.


Thirty competitors in the Hawaii Ironman Triathlon were prospectively studied to determine whether fluid and electrolyte disturbances were causes for seeking race-day medical care. Athlete weights were significantly (p < 0.0001) decreased during the race, but decreases were not different in treated (n = 11; % delta wt -2.3 +/- 2.9) versus not treated (n = 19; % delta wt - 2.0 +/- 1.9) athletes. Hyponatremia occurred in nine athletes (30%), and hypomagnesemia in six (20%), but only half of athletes were either electrolyte imbalance sought care. Although athletes receiving medical care may have fluid and electrolyte problems, these abnormalities may also occur in healthy athletes.

[Indexed for MEDLINE]

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