I'm well over 50 and I do long rides. I start a 1230km ride Sunday. I think the issue associated with AF is gut permeability and a sepsis-like effect in the blood....LPS. Keeping you gut healthy and not overdoinging it in the heat along with some specialized supplements is my way. I'm probably the type of rider the article is addressing but they really did me no help. I know NSAIDs are a huge no no for me as is alcohol.