Inclusion Criteria:  Control group:  - The control group will include healthy participants, aged 18 and 80 years, who had not tested positive for COVID-19.  COVID-19 positive participants who had moderate symptoms group:  Female and male participants, aged between 18 and 80 years, who had Molecular test (RT-PCR) or serological test, which assesses whether the samples are reactive to immunoglobulin M (IgM) and immunoglobulin G (IgG) antibodies, positive for COVID-19; Presence of some of the following symptoms, without the need for hospitalization: dry cough, runny nose, sore throat, diffuse body pain, persistent hyperthermia, no hypoxemia.  COVID-19 positive participants who had severe symptoms group:  Female and male participants, aged between 18 and 80 years, who had Molecular test (RT-PCR) or serological test (which assesses whether the samples are reactive to IgM and IgG antibodies) positive for COVID-19; Presence of hypoxemia (peripheral oxygen saturation - SPO2 ≤ 93%) requiring hospitalization with or without intubation, in addition to the symptoms described for the COVID-19 positive participants who had moderate symptoms group.  Exclusion Criteria:  Body Mass Index (BMI) ≥ 35 kg/m2; Pregnancy; Pain, swelling, dermal damage, deformity, or amputation in the regions to be examined; Diagnosis of ankylosing spondylitis, rheumatoid arthritis, severe heart disease, advanced chronic obstructive pulmonary disease, cognitive impairment, chemical dependency, psychiatric illness, or behavioral that makes it difficult to cooperate with the procedures.