We all know that dehydration impairs endurance performance, but what about team sport performance?

The Introduction

Dehydration during endurance events has long been known to reduce performance. Dehydration equivalent to 2% body weight loss during exercise in a hot environment (31-32°C) impairs endurance performance, but when the exercise is performed in a milder environment (20-21°C) a 2% body mass loss appears to have a lesser and inconsequential effect. In cold environments a body mass loss >2% may be tolerable for endurance exercise. However, little research has ever focused on the effect of dehydration on team sport performance.

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