Proposed exercises Respiratory maintenance For the elderly (R. Civitani Monzon, O. Lucha LopeZ, J. M. TricaS Moreno, S. Caudevilla Polo, & E. Marin Martinez , Trans.). (2000). Cuestiones De Fisioterapia, 14(1), 49-61. https://cuestionesdefisioterapia.com/index.php/es/article/view/497