Skipping water during exercise may limit your body's response to whey protein
News-Medical reports on a small crossover study of 13 healthy young men published in Nutrients. After treadmill running without fluid replacement, which produced about 2.2% body mass loss, the early rise in blood amino acids after a 45 g whey protein drink was smaller than when 50% or 100% of fluid loss was replaced. Muscle protein synthesis was not measured, and the dehydration trial always came first.
Why it matters: Relevant to sports medicine and rehabilitation clinicians, and to readers following research on exercise hydration and whey protein in healthy young men.
A summary of another publisher's reporting, written with AI and checked automatically against the story. The reporting belongs to news-medical.net. October 8, 2026.