Cognitive and/or physical symptoms ≥ 12 months after acute COVID-19 infection

Symptoms include post-exertional malaise (PEM) and/or dysautonomia as assessed by questionnaires and/or NASA LEAN test

Symptoms affect day-to-day life (based on SF-36 'role limitations due to physical functioning' score of ≤ 50 at baseline).

Current treatment regimen is stable for at least 1 months before inclusion

Treatment of Post-COVID-19 With Hyperbaric Oxygen Therapy: a Randomized, Controlled Trial