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Running Power Experts Hans van Dijk and Ron van Megen

Running Power Experts Hans van Dijk and Ron van Megen

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  • 2:00 meet life-long runner and retired professor of engineering Hans van Dijk
  • 5:00 meet (also a) lifelong runner and engineer Ron van Megen
  • 9:00 where does all that work that we do as runners go?
    • Overcoming running resistance (influenced by running efficiency)
    • Overcoming aerodynamic drag
    • Overcoming changes in elevation
  • 11:30 running efficiency / energy cost of running (ECOR)
    • Potentially large interindividual differences: up to 20%!
    • Minimized through training
  • 13:15 aerodynamic drag
    • Average runner CdA is 0.24 in free air and 0.20 while drafting
    • Eliud Kipchoge was down to 0.16 during his Breaking 2 attempt
  • 18:15 changes in elevation
    • Running efficiency improves when running uphill and worsens when running downhill
  • 20:30 factors that influence running efficiency / ECOR
    • Global, multi-year training load: more training tends to reduce ECOR
    • Experiment with: cadene, arm carriage, shoes, etc., to find minimal ECOR
    • Reduce weight 
  • 31:30 factors that affect aerodynamic drag
    • Runner speed
    • Drafting
  • 34:00 Hans and Ron’s models of run performance
  • 39:00 using the stryd power meter to calculate running efficiency

Learn more about Hans and Ron and browse their books at their website.

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