Core temperature and running

If you do some endurance- or weight training, it should be of no surprise to you that your body temperature increases during physical training. But do you know how much it increase?

Galina5_Web

 

(I have no pictures of myself running, so this is Galina running at a photo session for 3atlet.no)

A few months ago, we did some testing on Olympic athletes in Oslo. Preparing for Tokyo Olympics, they did endurance testing in a heated lab at 35°C. We will publish these results later. It is very interesting results. But how about ordinary individuals who train in normal Scandinavian weather conditions?

Today I did a test on myself. I swallowed one of the temperature capsules we use on athletes. They are made in France and measure the body core temperature every 30 sec.  Then I did one of my training runs in Stavern. About 50 min of running at low to moderate intensity. That is zone 2 and 3 if you are familiar with endurance training zones. Way below lactate threshold. Air temperature was 22°C, which is a warm Norwegian summer day.

Below is how my body core temperature raise during the run. As you can see it is increasing pretty fast when I start running. And it seems to reach a plateau at slightly below 38.5°C. If my intensity had been higher, the core temperature probably had been higher. We will later show you all how the body temperature raises in athletes at ÖtillÖ Utö and a ½ Ironman race called Halv-Fet.Screenshot 2017-06-18 16.59.35

But how will this affect your endurance? What happens if your core temperature raise even higher than this? We´ll hope to give you some answers to that in the years to come.

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