Decoupling – typo or misunderstanding?

  • Creator
  • #54240

    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.


    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?

  • Participant
    Reed on #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 on #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 on #54801

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

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