When I work out at around 190-200W my HR is usually around 140-150. I have been doing some high intensity workouts lately (4x4min, Zone 5 Coggan/Ric). The day after a workout like this my HR at 190-200W is down to 120-130, at least for the first half of the workout, it might come a bit at the end (e.g. 130-140).
I know that it is normal to have a suppressed HR after high intensity workouts, but what is the reason for this? I can think of several explanations:
1) Stroke volume has actually temporarily increased (fewer beats necessary)
2) My blood transports more oxygen pr ml, so less blood is needed
3) My body is trying to tell me to slow down, "holding back" on my HR so that I feel fatigue sooner for any given intensity
4) My muscles somehow extract more of the oxygen from my blood, so less blood is needed
Does any of these have anything to do with this phenomena? Any other reasons for the suppressed heart rate?
I know that it is normal to have a suppressed HR after high intensity workouts, but what is the reason for this? I can think of several explanations:
1) Stroke volume has actually temporarily increased (fewer beats necessary)
2) My blood transports more oxygen pr ml, so less blood is needed
3) My body is trying to tell me to slow down, "holding back" on my HR so that I feel fatigue sooner for any given intensity
4) My muscles somehow extract more of the oxygen from my blood, so less blood is needed
Does any of these have anything to do with this phenomena? Any other reasons for the suppressed heart rate?