Beverages intake and hydration status in adolescents

• C. Gonçalves ^[1] ; P. Padrão ^[1] ; S. Abreu ^[1] ; O. Pinho ^[1] ; P. Graça ; P. Moreira ^[1]
  1. [1] Universidade Do Porto

     Universidade Do Porto

     Santo Ildefonso, Portugal

     
• Localización: Nutrición hospitalaria: Órgano oficial de la Sociedad Española de Nutrición Clínica y Metabolismo (SENPE), ISSN-e 1699-5198, ISSN 0212-1611, Vol. 32, Nº. Extra 2 (Diciembre 2015), 2015 (Ejemplar dedicado a: II INTERNATIONAL AND IV SPANISH HYDRATION CONGRESS), págs. 32-33
• Idioma: inglés
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• Resumen

  • Introduction: Type and quantity of beverages intake among adolescents may influence their hydration status.

    Objective: To evaluate the association between hydration status assessed by Free Water Reserve (FWR) and consumption of 5 types of beverages (water, milk, soft drinks, fruit juices and hot beverages).

    Method: Cross-sectional study including 200 participants (118 girls), aged 13-18 years. Urine collections were validated by 24-hour urinary creatinine excretion in relation to body weight according to age group. FWR was assessed for characterization of hydration status (negative values represent risk of hypo-hydration). A 24-hour dietary recall was also collected and data on beverages (g/d) were analyzed from the following groups: water (tap water, natural mineral water, water from a fountain); hot beverages (coffee, tea, beverages made from cereals); milk; juices (home-made juice, bottled juice, nectar without added sugar, other 100% fruit drinks); soft drinks (carbonated and non-carbonated soft-drinks). Mann–Whitney U test was performed to compare ingestion of beverages with FWR status.

    Results: Median FWR was positive in both sexes (173 ml/d for boys and 373 ml/d for girls); however, 40% of boys and 31% of girls were at risk of hypo-hydration. Mean ingestion of beverages was: water 656±459g/d (n=159), hot beverages 168±200g/d (n=44), milk 489±290g/d (n=165), soft drinks 467±248g/d (n=107) and fruit juices 249±89g/d (n=10). Euhydrated participants reported to drink more water (p=0.009) and hot beverages (p=0.023) than participants at risk of hypo-hydration.

    Conclusions: In this sample of participants, euhydrated adolescents ingest more water and hot beverages than those at risk of hypo-hydration.