Handgrip Strength and Its Association With Hydration Status and Urinary Sodium-to-Potassium Ratio in Older Adults

• Type: Article in International Scientific Journal
• Date: 2020

Authors

Mendes, J (Author) Other; Padrão, Patrícia (Author) FCNAUP; Moreira, Pedro (Author) FCNAUP; Santos, Alejandro (Author) FCNAUP; Borges, Nuno (Author) FCNAUP; Afonso, Cláudia (Author) FCNAUP; Maria Rita Negrão (Author) FMUP; Amaral, Teresa (Author) FCNAUP

Journal

Title: Journal of the American College of Nutrition

Vol. 39 No. 3

Pages: 192-199

ISSN: 0731-5724

Publisher: Taylor & Francis

Indexing

ISI Web of Knowledge - 5 Citations

Scopus - 3 Citations

Scientific classification

CORDIS: Health sciences

FOS: Medical and Health sciences

Other information

Authenticus ID: P-00Q-Z1R

DOI: 10.1080/07315724.2019.1633439

Abstract (EN): Objective: Older adults present higher risk of functional disability detected by handgrip strength and an increased risk of poor health conditions, such as dehydration and low values of the sodium-to-potassium (Na/K) ratio. This study aimed to quantify the association of hydration status and Na/K ratio with handgrip strength, based on the urinary excretion of older adults. Methods: A cross-sectional study was conducted in 735 older adults ¿ 65 years old. Handgrip strength was measured with a Jamar Dynamometer and low values were defined according to body mass index and to sex-specific cutoff points. The hydration status was evaluated based on free water reserve. Sodium and potassium intake were evaluated after converting 24-hour urinary sodium and potassium excretion, respectively. A logistic regression model was used to estimate the probability of presenting low handgrip strength, according to risk of hypohydration and to quartiles of Na/K, stratified by sex and adjusted for potential confounders. Results: The adjusted odds ratio (OR) for presenting low handgrip strength was higher in women at risk of hypohydration, but this association was not found in men. Both women and men with the highest values of Na/K ratio presented higher adjusted OR for low handgrip strength (OR in women was 2.03; 95% confidence interval [CI]: 1.12¿3.68, and in men was 2.19; 95% CI: 1.11¿4.29). Conclusions: The risk of hypohydration was directly associated with low handgrip strength in older women. In older adults, higher values of urinary Na/K ratio were also directly associated with low handgrip strength. © 2019, © 2019 American College of Nutrition.

Language: English

Type (Professor's evaluation): Scientific