Body weight and speed over 100km
Body Mass Change and Ultraendurance Performance: A Decrease in Body Mass Is Associated With an Increased Running Speed in Male 100-km Ultramarathoners. Generally, there is the opinion that you have to drink as much as possible in endurance charges, so you do not dehydrate.In particular, the dehydration, expressed as a decrease in body weight, should restrict performance. In ultra skills over 100 km, the situation seems to be a bit different.The fast runners drink more than the slow runners, probably because they are supported by a crew.The increased fluid supply but does not lead to a weight gain resp.Stabilization of the weight.
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