inclusion criteria: men and women ≥18 years patients discharged from the pulmonology service with a diagnosis of covid-19 by positive pcr and with severe pneumonia. at least three months after the presence of at least one of the following criteria: mrc dyspnea greater than or equal to 2. decrease in the meters walked with respect to the reference values in the 6-minute walking test. c) decreased respiratory muscle strength measured at maximum inspiratory pressure (pim) and / or maximum expiratory pressure (pem) with respect to reference values. sign informed consent from the study

inclusion criteria: men and women ≥18 years patients discharged from the pulmonology service with a diagnosis of covid-19 by positive pcr and with severe pneumonia. at least three months after the presence of at least one of the following criteria: mrc dyspnea greater than or equal to 2. decrease in the meters walked with respect to the reference values in the 6-minute walking test. c) decreased respiratory muscle strength measured at maximum inspiratory pressure (pim) and / or maximum expiratory pressure (pem) with respect to reference values. sign informed consent from the study