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Salud Pública

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Resumen
Este resumen es generado por máquina.

La transitabilidad del vecindario está relacionada con una mejor función cognitiva en adultos mayores, pero no directamente con la actividad física o la estructura cerebral. La desventaja socioeconómica, no el entorno construido, parece impulsar la inactividad física.

Palabras clave:
envejecimientosalud públicaentorno construidofunción cognitivaactividad físicadesigualdad socioeconómica

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Área de la Ciencia:

  • Gerontología y Salud Pública
  • Neurociencia y Envejecimiento Cognitivo
  • Planificación Urbana y Salud Ambiental

Sus antecedentes:

  • Los entornos del vecindario influyen en la actividad física, un factor clave en el riesgo de demencia y la salud cognitiva.
  • Se estudiaron adultos mayores con mayor riesgo de enfermedad de Alzheimer (EA) para comprender los impactos ambientales en la salud cerebral.
  • Se utilizó el Índice Nacional de Transitabilidad de EE. UU. para evaluar las características del entorno construido del vecindario.

Objetivo del estudio:

  • Examinar la asociación entre la transitabilidad del vecindario y la función cognitiva, la estructura cerebral (materia gris, hiperintensidades de la sustancia blanca) y los factores del estilo de vida (actividad física, comportamiento sedentario).
  • Investigar la relación entre la desventaja del vecindario y la actividad física/comportamiento sedentario en adultos mayores.
  • Explorar estas asociaciones en adultos mayores cognitivamente sanos con mayor riesgo de enfermedad de Alzheimer.

Principales métodos:

  • Se analizaron los datos iniciales de 1398 adultos mayores del ensayo POINTER de EE. UU.
  • La transitabilidad se categorizó utilizando el Índice Nacional de Transitabilidad de EE. UU.; la desventaja del vecindario se evaluó utilizando el Índice de Desventaja del Área (ADI).
  • Se midieron y analizaron la cognición (PACC-5), el volumen de materia gris, las hiperintensidades de la sustancia blanca (HSB), la actividad física (CHAMPS) y el comportamiento sedentario (CS) utilizando modelos de regresión.

Principales resultados:

  • Una mayor transitabilidad se asoció con mejores puntuaciones de función cognitiva (PACC-5), pero no con el volumen de materia gris o las hiperintensidades de la sustancia blanca.
  • La desventaja del vecindario se relacionó con un aumento del comportamiento sedentario, mientras que la transitabilidad no se asoció significativamente con la actividad física o el comportamiento sedentario.
  • Los vecindarios más desfavorecidos eran generalmente menos transitables.

Conclusiones:

  • La inactividad física en áreas desfavorecidas se asocia más fuertemente con desventajas socioeconómicas que con la transitabilidad del entorno construido.
  • La transitabilidad no mostró una asociación directa con los niveles de actividad física o las medidas de salud cerebral en esta cohorte.
  • Se necesita más investigación para comprender los efectos sobre la salud de la desventaja del vecindario y la transitabilidad, particularmente en relación con la inactividad física y el envejecimiento cognitivo.