inclusion criteria: comprise age equal to or above 18 years; essential and clinical criteria for long covid at baseline assessment (confirmed preceding infection with sars-cov-2, individuals referred for rehabilitation reporting fatigue as major symptom [35]; and ability to understand portuguese well enough to be able to fill in the questionnaires

inclusion criteria: comprise age equal to or above 18 years; essential and clinical criteria for long covid at baseline assessment (confirmed preceding infection with sars-cov-2, individuals referred for rehabilitation reporting fatigue as major symptom [35]; and ability to understand portuguese well enough to be able to fill in the questionnaires

inclusion criteria: - individuals with long covid-19 infection, for at least 18 months, referred for rehabilitation; report of fatigue as major symptom after acute covid-19 infection; - ability to understand portuguese well enough to be able to fill in the questionnaires.

inclusion criteria: - individuals with long covid-19 infection, for at least 18 months, referred for rehabilitation; report of fatigue as major symptom after acute covid-19 infection; - ability to understand portuguese well enough to be able to fill in the questionnaires.