Inclusion Criteria:  subjects of both sexes, sedentary, within two months of a diagnosis of COVID-19 confirmed by RT-PCR, aged over 18 years and without any underlying respiratory disease, with adequate cognitive status defined through the Mini Mental State Examination and reduced muscle strength respiratory, defined through the assessment of the maximum inspiratory pressure.  Exclusion Criteria:  subjects who present any condition that makes it impossible to carry out the assessments and protocols, complications that justify the interruption of data collection, such as syncope, severe chest pain, coughing up blood, those who request withdrawal from the study and who present adverse effects such as hospitalization by exacerbation of the clinical picture.