Introduction: Low levels of vitamin D have been associated with muscle mass loss and cognitive function alteration.Objective: To find out the relationship of vitamin D blood levels with muscle mass and cognitive function in postmenopausal women. Materials and methods: Ninety-nine postmenopausal women aged ≥ 50 years were studied. Calf circumference, and tricipital, bicipital, subscapular and suprailiac skinfolds were measured. Arm muscle area, bone-free arm muscle area, and muscle mass were calculated. The short physical performance battery (SPPB) was performed, and the sarcopenia rapid diagnostic questionnaire (SARC-F), as well as the Mini Mental State Examination (MMSE) were applied. A blood sample was taken to measure vitamin D blood concentration. For statistical analysis, Mann-Whitney's U-test and Spearman's correlation analysis were used. Results: It was found that, the older the age, the higher the vitamin D levels, as well as higher SARC-F score. Vitamin D levels were negatively correlated with grip strength and SPPB. There was a negative correlation between vitamin D levels and MMSE global score. Conclusions: Vitamin D did not have a positive influence on muscle mass. A better MMSE performance was observed in those with lower vitamin D levels.
función cognitiva en mujeres posmenopáusicas. Materiales y métodos: Se estudiaron 99 mujeres posmenopáusicas ≥ 50 años. Se midió la circunferencia de la pantorrilla, los pliegues cutáneos tricipital, bicipital, subescapular y suprailíaco. Se calcularon: el área muscular del brazo, el área muscular libre de hueso y la masa muscular total. Se realizó la prueba corta de desempeño físico (PCDF), se aplicó el cuestionario de diagnóstico rápido de sarcopenia (SARC-F) y el Mini Examen del Estado Mental (MMSE). Se tomó una muestra de sangre para medir la concentración de vitamina D en sangre. Para el análisis estadístico se utilizó la prueba U de Mann-Whitney y análisis de correlación de Spearman. Resultados: Se encontró que a mayor edad hubieron mayores concentraciones de vitamina D y mayor puntaje SARC-F. Las concentraciones de vitamina D se correlacionaron negativamente con la fuerza de agarre, la PCDF y la puntuación total del MMSE. Conclusiones: La vitamina D no tuvo una influencia positiva sobre la masa muscular. Se observó un mejor desempeño en el MMSE en aquellas con concentraciones más bajas de vitamina D.
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