Multicomponent strength training, cognition and muscle quality in older adults. Systematic review and narrative synthesis. - Jerez-Salas, Felipe; Villouta-Gutiérrez, Orlando; Luksic-Cataldo, Valentina; Pavez-Álvarez, Cristal (Retos: Nuevas Perspectivas de Educación Física, Deporte y Recreación, 2026)