[Marcel]

Once your speed or intensity exceeds your aerobic threshold (AeT), this linear relationship breaks down—decouples—and becomes nonlinear. Each small increase in speed will cause a smaller and smaller increase in heart rate.

source: https://uphillathlete.com/heart-rate-drift/

But isn’t it the other way around? i mean, when i pass the AeT, the increase in heart rate will become larger not smaller, isn’t it?

Topic

[Reed]

Reed on May 25, 2021 at 10:27 am #54294

Not a typo – this has been called the “Conconi point” although there are so many definitions, it’s hard to keep them straight.

You might see a fairly linear relationship between intensity and heart rate at lower intensities. From 9:30 min/mi to 9:00 min/mi to 8:30 min/mi pace, your heart rate might go from 140bpm to 150 to 160. But but there’s an upper limit on heart rate, so the increase to 8:00 min/mi and 7:30 min/mi might only raise your heart rate to 166 and 172.

[Anonymous]

Anonymous on May 25, 2021 at 3:18 pm #54311

@news: As Reed said, your heart rate will continue to increase, but at a lesser rate, and only up to a certain point. The range in possible speeds from AeT upward is multiples of what the possible change in heart rate can be.

For example, if aerobic threshold is 1,000 m/hr at 150 bpm, a full-out 10″ sprint might peak at 3,000 m/hr, but heart rate cannot go to 450 bpm.

[Marcel]

Marcel on June 12, 2021 at 1:08 pm #54801

@Scott & Reed: thanks a lot for clarifying – quite interesting and makes sense!