Table 1.

Risk factors for the development of EAHa

Exercise duration >4 h or slow running/exercise pace
Female gender (may be explained by lower body weight)
Low body weight
Excessive drinking (>1.5 L/h) during the event
Pre-exercise overhydration
Abundant availability of drinking fluids at the event
Nonsteroidal anti-inflammatory drugs (not all studies)
Extreme hot or cold environment
  • a EAH, exercise-associated hyponatremia.