Endurance Innovation 113 – Mikael Eriksson on HR-Based Training

Endurance Innovation 113 – Mikael Eriksson on HR-Based Training

That Triathlon Show host and coach Mikael Eriksson is back to share his understanding of the evidence and practical applications of the use of HR monitoring in training.

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  • 3:45 what can monitoring HR during training tell us?
    • A good proxy for non-invasive measurement of internal load
  • 5:30 how does Mikael use HR in coaching
    • Typically a secondary metric to provide context for pace and power metrics
  • 8:15 difference between value of using HR as a primary metric in beginner vs advanced athletes
  • 9:45 is HR ever a primary metric? Specifically in longer endurance efforts.
  • 14:00 testing or estimating LT1 / AeT
    • 75% – 80% of HRmax
    • Maintaining HR with no drift over constant power on long efforts. This one is tricky.
    • Lactate test
    • Talk test
    • HRV Dfa A1 analysis 
  • 19:45 cardiac drift / aerobic decoupling
    • Is it useful?
    • Ed Coyle paper
    • Largely caused by hyperthermia & dehydration
    • May be partially caused by gradual glycogen depletion in working motor units
  • 28:30 what do you infer from a workout with abnormally high HR
    • Environmental: heat or altitude
    • May be caused by illness, but not well understood
    • Stimulants like caffeine
    • Post COVID / COVID vaccine recovery?
  • 33:45 what do you infer from a workout with abnormally low HR
    • When combined with a higher-than-expected RPE, is a sign of overreaching
    • When the decline is steady, and gradual over a long time horizon, it could be a sign of improving aerobic fitness
    • Maybe glycogen depletion when looking at high intensity training sessions
  • 39:00 Mikael’s thoughts on training using RPE only

Check out Scientific Triathlon and listen to Mikael’s excellent podcast That Triathlon Show wherever you get your podcasts.

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