* previous or current hospitalization due to the covid-19 disease * regular engagement in endurance or strength training (more than once per week) in the six months prior to enrollment * contraindications for physical endurance and resistance exercise according to the guidelines of the american college of sports medicine (acsm) * clinical diagnosis of depression * clinical diagnosis of anxiety * clinical diagnosis of a sleep disorder * clinical diagnosis of a cognitive deficit disorder * a grade of 3 or higher on the post-covid-19 functional status scale (pcfs) * presence of post exertional malaise (pem)

* previous or current hospitalization due to the covid-19 disease * regular engagement in endurance or strength training (more than once per week) in the six months prior to enrollment * contraindications for physical endurance and resistance exercise according to the guidelines of the american college of sports medicine (acsm) * clinical diagnosis of depression * clinical diagnosis of anxiety * clinical diagnosis of a sleep disorder * clinical diagnosis of a cognitive deficit disorder * a grade of 3 or higher on the post-covid-19 functional status scale (pcfs) * presence of post exertional malaise (pem)

previous or current hospitalization due to the covid-19 disease regular engagement in endurance or strength training (more than once per week) in the six months prior to enrollment contraindications for physical endurance and resistance exercise according to the guidelines of the american college of sports medicine (acsm) clinical diagnosis of depression clinical diagnosis of anxiety clinical diagnosis of a sleep disorder clinical diagnosis of a cognitive deficit disorder a grade of 3 or higher on the post-covid-19 functional status scale (pcfs) presence of post exertional malaise (pem)

previous or current hospitalization due to the covid-19 disease regular engagement in endurance or strength training (more than once per week) in the six months prior to enrollment contraindications for physical endurance and resistance exercise according to the guidelines of the american college of sports medicine (acsm) clinical diagnosis of depression clinical diagnosis of anxiety clinical diagnosis of a sleep disorder clinical diagnosis of a cognitive deficit disorder a grade of 3 or higher on the post-covid-19 functional status scale (pcfs) presence of post exertional malaise (pem)