For me, it’s my heart can’t beat any faster - how about you?
- My legs get tired
- I can’t breath any faster
- My heart can’t beat any faster
Edit: added question:
Can any information be gleaned from why people fail the ramp test to inform the sort of training they should do or avoid? Or set expectations on the response to training?
E.g. can muscle endurance/utilization of oxygen be more readily trained than cardiac output/oxygen delivery?
Edit: addition of study on max HR and reasons for stopping:
These are some interesting stats In the poll. And compare reasonably well* to the results from this study below - which tested people’s max HR on a treadmill ramp, but also asked them for the reason they stopped.
Note: *if you group heart/breathing together, which were probably a little difficult to tell apart for people in this study, as most were likely non athletes who may not be dialed in to their body sensations).
- Leg fatigue: 81%
- Shortness of breath: 17%
- Chest discomfort: 1%