The common heart condition midlife cyclists fear - and why it doesn't spell the end for your riding ambitions
Atrial fibrillation (AF) is increasingly common among midlife endurance cyclists, creating a health paradox where exercise improves overall fitness but may stress cardiac wiring. Experts suggest that while the condition is a concern, it does not necessarily prevent continued participation in the sport.
Why it matters
Understanding the link between endurance sports and heart health is vital for aging athletes looking to maintain their performance safely.
Picture the scene. You’re climbing in a group, the pace a solid seven out of 10. Conversation has tapered to expletives and short sentences.
Suddenly you feel your energy and power melt away – you check your head unit and you are now 70 watts adrift. At the same time, you feel dizzy or fatigued.
You may be seeing a confused heart-rate measurement. You have questions that extend way beyond your grupetto’s rear wheels disappearing over the horizon.
You have just had your first brush with atrial fibrillation, A-fib or AF – the world’s most common cardiac arrhythmia.
AF affects about 3% of the general population, but a much higher proportion of endurance enthusiasts; especially midlife cyclists.
The incidence of AF in midlife endurance sport, and particularly cyclists, has been a gradually emerging paradox over the last 20 years.
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