Bioelectrical impedance analysis (BIA) to monitor hydration status of healthy adults

Introduction: Hydration level affects metabolic activity of organs such as liver and muscle [1]. A simple technique to assess hydration is bioelectrical impedance vector analysis (BIVA). So far, BIVA was mainly used under extreme conditions (i.e. height training) or in diseased people (i.e. dialysis or anorexia nervosa patients [2]). Objectives: The present study aimed at assessing physiological hydration changes under standardized conditions in healthy adults with BIVA. Methods: We applied single frequency BIA (BIA Corpus Rx4000, Medi-Cal, Karlsruhe, Germany) in 42 healthy adults (20 men, 22 women; age: 36 ± 12…