inclusion criteria: presenting symptoms of post-covid-19 condition confirmed by the diagnosis by general practitioner (including obligatory fatigue and shortness of breath/respiratory problems) age 10-12 yrs old adapted to aquatic setting <12 pts in the ruffier test

inclusion criteria: presenting symptoms of post-covid-19 condition confirmed by the diagnosis by general practitioner (including obligatory fatigue and shortness of breath/respiratory problems) age 10-12 yrs old adapted to aquatic setting <12 pts in the ruffier test