Association between sodium intake and hydration status amongst community-dwelling elderly people

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2014

Autores

Silva, J (Autor) Outra; Padrão, Patrícia (Autor) FCNAUP; Oliveira C (Autor) FMUP; Esteves, R (Autor) Outra; Carrapatoso, S (Autor) Outra; Carvalho, J (Autor) Outra; Severo, M (Autor) Outra; Lopes C (Autor) FMUP; Moreira, Pedro (Autor) FCNAUP

Ata de Conferência Internacional

Título: Revista Espanola de Nutricion Comunitaria

Páginas: 63-67

Indexação

Scopus - 2 Citações

Outras Informações

ID Authenticus: P-00R-Y0A

Abstract (EN): Dehydration is a common condition in older people and it has been associated with the development of many diseases. The aim of this study was to assess the association between hydration status in community-dwelling elderly people. Data were gathered in 74 community-dwelling elderly individuals (28 males) and included the collection of 24-h urine samples, which were screened for validity using 24-h urinary creatinine excretion in relation to body weight, anthropometric, physical activity, and sociodemographic variables. Hydration status was assessed using urinary indicators (24-h volume, osmolality and urine specific gravity) and sodium intake was assessed by 24-h urinary sodium excretion. Linear regression analysis was performed to quantify the association between sodium excretion (independent variables) and hydration biomarkers (dependent variables). No significant differences were found between males and females in 24-h urine volume (1,982.5 ± 654.5 mL vs 1,832.0 ± 655.8 mL, p = 0.341), 24-h urine osmolality (454.0 ± 158.5 mOsm/kg vs 402.7 ± 149.4 mOsm/kg, p = 0.204) and 24-h urine specific gravity (1.015 ± 0.006 vs 1.013 ± 0.005, p = 0.131). Urine volume and osmolality showed a positive and significant association with sodium excretion (ß = 0.314, 95%CI: 0.095,0.562 and ß = 0.390, 95%CI: 0.195,0.679, respectively), even after adjusting for confounders (age, sex, body mass index, and physical activity). Our findings showed that community-dwelling elderly individuals with a higher level of sodium intake had a higher 24-h urine volume and a higher 24-h urine osmolality. These findings suggest that a higher sodium intake is associated with a poorer hydration status in this elderly population, assessed by urine osmolality.

Idioma: Inglês

Tipo (Avaliação Docente): Científica