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The Influence of Hydration on Strength

Of the six studies to accurately assess the effects of dehydration on muscular strength, it is suggested that dehydration at a level of 3‐4% body mass loss reduces muscle strength by an estimate of 2%.

Body mass losses of 3‐4% can occur in exercise lasting 60-90 minutes, especially if an athlete begins practice dehydrated or there are additional external factors affecting sweat rate (environmental temperature, protective equipment/clothing, etc.).

Practical Applications
Body mass losses of 3‐4% can occur in exercise lasting 60-90 minutes, especially if an athlete begins practice dehydrated or there are additional external factors affecting sweat rate (environmental temperature, protective equipment/clothing, etc.).

Proper hydration during activity will assist in preventing any additive effects of dehydration on strength losses.

Athletes participating in sports such as football, ice hockey, wrestling, and rugby should maintain adequate hydration to attenuate strength losses during activity.

Read the Korey Stringer Institute (KSI) study on "The Influence of Hydration on Strength."

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