On this topic, it would be great to hear perspectives on if training should differ between a cardio-constrained vs muscular-constrained athlete.
For clarity, I’m using the following definitions:
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Cardio constrained: heart rate reaches max (or close to it) during ramp test, legs feel OK, but reaching max HR is what causes the rider to stop
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Muscular constrained: legs can’t keep up with the increasing power demand during ramp test - either burning, or just don’t have the energy. Cardio OK, with HR not reaching max.