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Associations between hydration status, body composition, sociodemographic and lifestyle factors in the general population: a cross-sectional study
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Associations between hydration status, body composition, sociodemographic and lifestyle factors in the general population: a cross-sectional study
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Associations between hydration status, body composition, sociodemographic and lifestyle factors in the general population: a cross-sectional study
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Journal Article
Associations between hydration status, body composition, sociodemographic and lifestyle factors in the general population: a cross-sectional study
2022
Overview
Background
Whole-body hydration status is associated with several health outcomes, such as dehydration, edema and hypertension, but little is known about the nonclinical determinants. Therefore, we studied the associations of sex, age, body composition, nutrition, and physical activity on several body hydration measures.
Methods
We assessed sociodemographic variables, dietary habits, and physical activity by questionnaire and body composition by bioelectric impedance analysis (BIA). We compared determinants between the sexes and calculated associations between determinants and BIVA hydration measures by multivariable linear regressions.
Results
A total of 242 adults from the general population (age 18–94, 47% women) were included. Women were younger, smaller, lighter, and had a smaller BMI (kg/m
2
) than men (
p
< 0.05). Women had less muscle mass, less visceral fat mass and less extracellular and intracellular water than men (
p
< 0.001). Women showed less intracellular water per extracellular water than men, while men showed higher phase angle values than women (both
p
< 0.001). Men had a stronger association of hydration measures with physical activity than women. Both sexes showed a decrease in hydration measures with age.
Conclusions
Sex, age, body composition, and physical activity influence body hydration. There seem to be differences in body water regulation between the sexes. Especially interesting are factors susceptible to preventive measures such as physical activity.
