Training in the heat recommendations from the Olympic Committee
Most athletes would tell you that they would rather play in the heat than in the cold. That is unless you’re a skier or hockey player of course! Other than those winter sports, most would pick warm weather every day of the week. That’s why most major tournaments are located in areas where the weather is going to be warm, allowing athletes to compete at their best. Competing in hot conditions though requires proper planning to ensure athlete safety. It’s a fine balance between warm and dangerously hot where cooling strategies need to be in place. Helping to combat those challenges, the International Olympic Committee put together a statement on considerations for it.
Too much heat dangers
Being warm is one thing while overheating is a completely different story. When training in the heat, caution needs to be observed. The body tries its best to keep internal temperatures in check but like everything it does have its limits. Unfortunately, if those limits are surpassed it can result in heat strokes and be incredibly dangerous.
Severe exercise-induced heat illness (also referred to as exertional heat stroke) is one of the two main causes of death amongst athletes. As the body begins to overheat it sends the signal to the brain that things need to start slowing down to try and rest and cool. If unable to cool down the body begins to fail and shutdown. To help avoid such scary situations, proper planning and actions need to be kept in mind.
Know the environment
Before traveling anywhere you want to know the type of conditions you are going to be exposed to. If it’s something in Alaska, the heat may not be a major issue for you! Most cases though you will want to do some homework to know how to prepare. Checking the average temperature and humidity will allow you to gauge how much you are likely to sweat and if that sweat will be able to evaporate and cool you down or if it’s too humid. You will also want to know if there is going to be shade available where you’re at. If you are going to be constantly exposed to the sun you’ll want to plan accordingly as well. Then also know the availability of beverages and cooling stations to ensure what you need to bring of your own. You don’t want to have any surprises when you show up!
Heat acclimation
Preparation is important in every aspect of life, including getting your body ready for heat. When exposed to higher temperatures the body goes through several changes to help stay cool. Those adaptations include sweating earlier, sweating more and decreasing the sodium content of the sweat. Too bad those changes don’t occur immediately though. If going into a competition in the heat, you’ll want to ensure your body is ready ahead of time.
In a perfect world it’s recommended to give yourself two weeks to prepare and adapt. Exposing your body to higher temperatures and inducing sweat for 60-90 minutes at a time is the desired timeframe. Doing that four times per week for the two weeks will get your body acclimated and primed to handle the hotter environments when you competition begins. Spending that time in the hot environment itself would be ideal but if unable to do that there are a few alternatives. Hot rooms, saunas and hot baths can be helpful alternatives when living in a cold environment and planning to travel to a hot environment. While not the exact same as actually training in the environment, it still gets the body sweating and making those physiological changes.
Hydration and fluid intake
Once in the environment, you will want to make sure your hydration and fluid intake is appropriate as well. As you become dehydrated, your body has a lower blood volume which decreases the ability to spread out the body heat and cool it down. The goal during competition/training is to drink enough fluid to avoid a weight loss of >2% from sweat. Maintaining that weight represents maintaining proper blood volume for the body to help dissipate that heat.
In order to ensure that excess weight and fluid loss doesn’t occur, it’s important to begin hydrated and drinking early into the event. The goal is not to completely avoid weight loss and definitely not to gain weight. That would represent overhydrating and has it’s own complications associated with it. What we’re aiming to do is help minimize the water loss occurring with sweat. Your body can only absorb so much fluid at a time so by starting early it helps avoid trying to play “catch up” later on in the event.
How much you need to be drinking during competition and training is very individualized. A general rule of thumb is around 1 liter (~32oz) per hour would be about the max to consume and still be comfortable. This can be played around with to find what feels and works best for you. Some may find a bit more can be tolerated while others may have to have a bit less. Adding in some sodium will help the body to absorb and retain that fluid and is important to keep incorporated as well.
Additional considerations
Outside of just general hydration, there are various cooling strategies that can be incorporated as able too. Things such as cold water immersion, cooling vests and mist fans are all great at helping decrease the body temperature. Consuming ice and slushies can be very beneficial as well. Not all of these strategies are able to be implemented depending on the situation but you should keep all options in consideration. Then when preparing figure out what all is feasible and works best for you to help keep cool.
Study referenced: click here