Effect of power training on function and body composition in older women with probable sarcopenia. A study protocol for a randomized controlled trial - Luis Polo-Ferrero; Susana Saez-Gutierrez; Arturo Dávila-Marcos; Fausto J. Barbero-Iglesias; María C. Sánchez-Sánchez; Ana Silvia Puente-Gonzalez; Roberto Mendez-Sanchez (PLoS ONE, 2025)