Cycling requires more muscle contractions than strength training exercises like squats, rows, or deadlifts, which demand more of the sarcomere per contraction.

“there is you know it's just a fraction of the ability to put out power on a bicycle and that might just suggest two different types of demands on the muscle you know if you're doing a squat or a row or a deadlift that's different that's much harder it's much you're asking much more of the sarcomere than if you're riding a bike per contraction but on the bike you're asking for many many many more of those contractions”