Telerehabilitation in People With Long COVID

Inclusion Criteria: Individuals who had been diagnosed with COVID-19 positive and whose last PCR test or rapid antigen test was negative with the following criteria: * aged between 20 to 80 years old * persistent symptoms at least 4 weeks after recovery from COVID-19 infection, including any of the following symptoms: dyspnea, fatigue, cough, headache, chest tightness, palpitations, loss of smell, anxiety, insomnia, brain fog or joint pain * able to speak and understand Mandarin * able to walk including those who need the walking aid * had mobile phones and could easily access the Internet Exclusion Criteria: * a history of chronic obstructive pulmonary disease or other respiratory diseases * a history of arrhythmia,cancer, end-stage renal disease with dialysis, being diagnosed with mental illness, recent stroke within 6 months * inability to participate because of comorbid neurological or musculoskeletal conditions that produce moderate to severe physical disability * need all day oxygen support