Keeping Runners Safe in the Heat: Combating Dehydration and Heat Illness

Posted by EFranz in on Thu 05/10/2018 2:29

Spring and summer is a great time for runners to get out and enjoy the weather running outside.  The treacherous conditions of running in the snow, ice, and rain are gone and it becomes easier to log more miles outside.  As the cool springtime temps give way to warm summers, hydration before, during, and after running becomes an important consideration.  Runners, parents, and coaches need to be aware of how to best keep young athletes hydrated and to recognize the signs of heat injury.

Here are a few tips for hydration for all athletes, young and old from the Young Athlete Center at St. Louis Children's Hospital:

  • Hydrate before, during, and after! Getting in enough fluid during all of these times is key.  Athletes should begin hydrating several hours before a run, especially if it will be a long run.  After runs, games, or practices, the goal is to replace all of the fluid that was lost.  A good rule of thumb is 20-24 oz for every pound lost. 
  • Water is the best choice if activity is less than 60 minutes—Activities under 60 minutes do not deplete electrolytes enough to require a sports drink like Gatorade.  If practice or games go beyond the one hour mark, you can use an electrolyte/carbohydrate containing drinks to replace these electrolytes and sugars. 
  • Rehydrate between activities—It is important that if kids are involved in two-a-days or have different sports on the same day that they need to be fully rehydrated before starting that second practice.  Starting a second practice without recovering from the first one can lead to further dehydration, poor performance, cramping, etc.

The first few runs in the heat are usually the hardest and put your athlete most at risk for heat illness (i.e. heat related cramps, heat exhaustion, and heat stroke).  It is best to gradually increase activity in hot temperatures so that the body can get adapted.  Proper hydration is important and it can also be helpful for kids to wear loose fitting, light colored, and moisture wicking clothing. 

Most importantly, coaches, parents, and athletes need to understand and recognize the early signs of heat illness so that they can treat these young athletes appropriately.
Common signs of heat illness include:

  • Headaches
  • Nausea/abdominal pain
  • Cramping (calf muscles are the most common)
  • Dry or sticky mouthy
  • Fatigue

If athletes are experiencing these symptoms during a run (or more severe symptoms like confusion), they should be taken off of the run course, encouraged to start drinking fluids, and put into a shady area.  Further action (like calling 911) should be considered if symptoms worsen or if the athlete isn’t able to drink on her own. The most important thing you can do is encourage lots of fluids before and after runs. 

For more information on keeping your young athlete healthy, visit the Young Athlete Center