Biofeedback equipment is classified by the Food and Drug Administration (FDA) as medical
device class II and this type of equipment/treatment has shown evidence regarding stress
management in post-Covid-19 syndrome.
The main objective of the study is to verify the feasibility of an HVR biofeedback training
protocol in patients with long covid, and also to verify improvement induced by the technique
in relation to: cognitive performance; pain perception; fatigue; quality of life; depressive
and anxious symptoms