Metabolites · 10 authors, 2 centres
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This randomized, controlled crossover pilot trial assessed how drinking different fluid solutions affected body composition measurements in 18 healthy adults. The central result was that acute fluid intake, regardless of electrolyte content, significantly altered bioelectrical impedance analysis (BIA) results for body water and fat mass, with effects varying by fluid type.
This single-center, randomized, controlled crossover pilot trial investigated the impact of three orally administered solutions—isotonic sodium chloride (ISO), Ringer (RIN), and glucose (GLU)—on body composition measured by bioelectrical impedance analysis (BIA) over 120 minutes post-intake in 18 healthy adults. All fluid trials induced significant changes in BIA-assessed body composition. These effects were statistically significant but small in magnitude, with changes in percentage body fat often below 1%. The study suggests that acute fluid intake can impact BIA results, with effects dependent on the fluid's ionic composition, though the clinical relevance for routine use may be limited.
