I sometimes google Atrial Fibrillation and cycling to see if there are any new websites or medical papers that might be of interest. I discovered yesterday that there is a “club” on Strava for cyclists with AF. It was set up by a sufferer who thought there was a lack of information out there for people like me.
Unfortunately, there are only 11 members, including myself, but it could be a useful resource if more AFibbers joined and contributed.