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Salud Pública

Oshadi M Jayakody1, Ying Jin1, Cuiling Wang2

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Resumen
Este resumen es generado por máquina.

Los adultos mayores que son "supermovedores" con velocidades de marcha rápidas tienen un menor riesgo de deterioro cognitivo y una menor declinación cognitiva. Este novedoso fenotipo de envejecimiento puede ofrecer información sobre los mecanismos protectores contra la demencia.

Palabras clave:
envejecimientosalud públicavelocidad de la marchadeterioro cognitivodemencia

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Área de la Ciencia:

  • Gerontología
  • Neurociencia
  • Salud Pública

Sus antecedentes:

  • La velocidad de marcha lenta es un predictor conocido de la declinación cognitiva y la demencia.
  • Las implicaciones cognitivas de las velocidades de marcha excepcionalmente rápidas en adultos mayores siguen sin explorarse.

Objetivo del estudio:

  • Investigar la asociación entre una velocidad de marcha excepcionalmente rápida y el riesgo de deterioro cognitivo y la declinación cognitiva en adultos mayores.

Principales métodos:

  • Se utilizaron datos de cinco estudios de la Red Internacional de Estudios de Salud y Jubilación (HRS-INS) para evaluar el riesgo de deterioro cognitivo.
  • Se empleó un metaanálisis de modelos de Cox de riesgos proporcionales para agrupar las estimaciones de riesgo de deterioro cognitivo incidente.
  • Se analizaron las tasas de declinación cognitiva en el estudio LonGenity utilizando modelos lineales mixtos para efectos fijos.

Principales resultados:

  • Los supermovedores demostraron riesgos significativamente menores de deterioro cognitivo en múltiples estudios de HRS-INS.
  • El metaanálisis de 3999 participantes (358 supermovedores) reveló un riesgo 51% menor de deterioro cognitivo (HR 0,49).
  • En el estudio LonGenity, los supermovedores exhibieron una declinación cognitiva más lenta en la cognición global y en pruebas neuropsicológicas específicas.

Conclusiones:

  • Los adultos mayores con velocidades de marcha excepcionalmente rápidas, un fenotipo de envejecimiento novedoso denominado «supermovedores», tienen un menor riesgo de deterioro cognitivo y una declinación cognitiva más lenta.
  • Estos hallazgos sugieren que la velocidad de marcha rápida puede ser un biomarcador de resiliencia cognitiva y puede ofrecer información sobre los mecanismos protectores contra la demencia.