Greater fat-free mass could lead to biased hydration test outcomes 🚨

More evidence of the poor reliability of urine testing for hydration.

Fat-Free Mass Is Positively Associated With Urine Specific Gravity in Athletes and Active Adults: A Quantitative Review

Background

Urine specific gravity (USG) is a commonly employed method to assess hydration status💧

Hypohydration (dehydration) is typically based on a commonly employed method USG threshold of ≥ 1.020 🥵