Relationship between hydration status and psychological tests in Spanish schoolchildren aged 7-11 years

• AM. López-Sobaler ^[1] ; ML. Delgado ^[1] ; A. Aparicio ^[1] ; E. Rodríguez-Rodríguez ^[1] ; E. Cuadrado-Soto ^[1] ; RM. Ortega ^[1]
  1. [1] Universidad Complutense de Madrid

     Universidad Complutense de Madrid

     Madrid, España

     
• Localización: Nutrición hospitalaria: Organo oficial de la Sociedad española de nutrición parenteral y enteral, 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), pág. 36
• Idioma: inglés
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• Resumen

  • Background: Data about hydration status in children and psychological aspects are scarce.

    Objective: To analyze the relationship between diuresis and urine osmolarity and indicators of stress, mood, and attention in a group of Spanish schoolchildren.

    Method: 278 children (aged 7-11 years) from different Spanish provinces participated in a cross-sectional study. Single 24-h urine samples were collected and urine osmolarity was calculated. IECI, CDI and “d2” tests were applied in order to assess stress, mood and attention, respectively. Sample was divided regarding urine osmolarity in children with high urine osmolarity (HO) (>800 mOsm/L) and with low urine osmolarity (LO). Statistical analyses were performed with SPSS v.20.

    Results: Finally 129 boys and 120 girls provided complete urinary and psychological data. In boys there were no differences in psychological scores between HO and LO but significant positive correlations were found between diuresis and attention (r=0.2262, p<0.01) and concentration scores (r=0.2512, p<0.01). In females, stress scores in health domain (IECI-Health scores) and Global stress were significantly higher in HO than in LO. Also osmolarity positively correlated with IECI-Health scores (rho-Spearman=0.2236, p<0.05) and Global stress scores (rho-Spearman =0.2015, p<0.05), while inverse correlations were found between diuresis and IECI-School (rho-Spearman =-0.2130, p<0.05), Global stress (rho-Spearman =-0.2215, p<0.05) and CDI-Depression scores (rho-Spearman =-0.1879, p<0.05).

    Conclusion: In this study, a better hydration status is related to better selective attention and mental concentration scores in boys, and lower stress and better mood in girls.

    Study supported by a UCM Research Project (PR6/13-18866) and the Grant UCM-Santander Research Group Program (Ref. GR3/14).