Urine colour change as an indicator of change in daily water intake: a quantitative analysis.
Eur J Nutr
; 55(5): 1943-9, 2016 Aug.
Article
em En
| MEDLINE
| ID: mdl-26286348
ABSTRACT
PURPOSE:
Urine colour (U Col) is simple to measure, differs between low-volume and high-volume drinkers, and is responsive to changes in daily total fluid intake (TFI). However, to date, no study has quantified the relationship between a change in TFI and the resultant change in U Col. This analysis aimed to determine the change in TFI needed to adjust 24-h U Col by 2 shades on an 8-colour scale, and to evaluate whether starting U Col altered the relationship between the change in TFI and change in U Col.METHODS:
We performed a pooled analysis on data from 238 healthy American and European adults (50 % male; age, 28 (sd 6) years; BMI 22.9 (sd 2.6) kg/m(2)), and evaluated the change in TFI, urine volume (U Vol), and specific gravity (U SG) associated with a change in U Col of 2 shades.RESULTS:
The mean [95 % CI] change in TFI and U Vol associated with a decrease in U Col by 2 shades (lighter) was 1110 [914;1306] and 1011 [851;1172] mL/day, respectively, while increasing U Col by 2 shades (darker) required a reduction in TFI and U Vol of -1114 [-885;-1343] and -977 [-787;-1166] mL/day. The change in U Col was accompanied by changes in U SG (lighter urine -.008 [-.007;-.010]; darker urine +.008 [.006;.009]). Starting U Col did not significantly impact the TFI change required to modify U Col by 2 shades.CONCLUSIONS:
Our results suggest a quantifiable relationship between a change in daily TFI and the resultant change in U Col, providing individuals with a practical means for evaluating and adjusting hydration behaviours.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Água Potável
/
Urinálise
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Ingestão de Líquidos
Tipo de estudo:
Diagnostic_studies
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Evaluation_studies
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Observational_studies
Limite:
Adult
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Female
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Humans
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Male
Idioma:
En
Revista:
Eur J Nutr
Assunto da revista:
CIENCIAS DA NUTRICAO
Ano de publicação:
2016
Tipo de documento:
Article
País de afiliação:
França