A cross-sectional study on the association between 24-h urine osmolality and weight status in older adults

• Type: Article in International Scientific Journal
• Date: 2017

Authors

Padrão, Patrícia (Author) FCNAUP; Sousa, AS (Author) Other; Guerra, RS (Author) Other; Álvares, L (Author) Other; Santos, Alejandro (Author) FCNAUP; Borges, Nuno (Author) FCNAUP; Afonso, Cláudia (Author) FCNAUP; Amaral, Teresa (Author) FCNAUP; Moreira, Pedro (Author) FCNAUP

Journal

Title: Nutrients

Vol. 9

Final page: 1272

ISSN: 2072-6643

Publisher: MDPI

Indexing

ISI Web of Knowledge - 8 Citations

Scopus - 7 Citations

Pubmed / Medline

Other information

Authenticus ID: P-00N-8VQ

DOI: 10.3390/nu9111272

Abstract (EN): Data on the association between hydration and body weight in the elderly are scarce. The objective of this work was to quantify the association between 24-h urine osmolality and weight status in the elderly. A cross-sectional study was conducted within the Nutrition UP 65 study. A quota sampling was implemented to achieve a nationally representative sample of Portuguese older adults (¿65 years) according to age, sex, education and region. From a sample size of 1500 participants, 1315 were eligible for the present analysis, 57.3% were women and 23.5% were aged ¿80 years. Participants were grouped using tertiles of 24-h urine osmolality by sex. World Health Organization cutoffs were used to classify participants according to weight status. Multinomial multivariable logistic regression models were conducted to evaluate the association of tertiles of osmolality with weight status, adjusting for confounders. Odds Ratios (OR) and respective 95% Confidence Intervals (95% CI) were calculated. Being in the 3rd urine osmolality tertile (highest) was associated with a higher risk of being obese in men, OR = 1.97, 95% CI = 1.06, 3.66. No such association was found in women. These results highlight the need for implementing studies in order to clarify the association between hydration and weight status in the elderly. © 2017 by the authors. Licensee MDPI, Basel, Switzerland.

Language: English

Type (Professor's evaluation): Scientific