Relationship between fluid intake, hydration status and cortisol dynamics in healthy, young adult males.

ABSTRACT:

Background

Previous studies have identified links between fluid intake, hydration related hormones and cortisol measured at one timepoint but have not considered how hydration may influence cortisol dynamics throughout the day. This study assessed associations between hydration status (copeptin, urinary osmolality, urine volume) and habitual fluid intake with cortisol dynamics.

Methods

The day before (DB) a 6-h laboratory visit, 29 male participants (age, 23±4y; BMI, 25.5 ± 4.3 kg/m²; body fat, 17.3 ± 9.3 %) provided 24-h urine samples and a fasted blood sample for hydration status assessment, recorded their 24-h fluid intake for three days prior, and provided 10 saliva samples to assess cortisol dynamics from DB into the evening of the laboratory visit. Calculate

SUBMITTER: Zaplatosch ME 

PROVIDER: S-EPMC11762143 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature