Endurance Innovation 109 – Prof. Jim Martin

Endurance Innovation 109 – Prof. Jim Martin

University of Utah Associate Professor Jim Martin discusses optimal crank length, ideal cadence, and perfect pedaling technique.

Thank you to 4iiii Innovations for supporting the podcast! If you’re after a reliable, accurate power meter, then use code 20214iiii-EI20% to receive 20% off any Factory Install power meter purchased through the 4iiii website.

  • 2:45 meet University of Utah Associate Professor, Jim Martin
  • 5:00 the muscle force-velocity relationship in cycling
  • 9:15 the surprising importance of muscle deactivation
    • Slow+heavy weight lifting can slow down deactivation
  • 12:30 the ideal crank length question
    • No change in maximal power in crank lengths between 145mm and 195mm crank arms
  • 27:30 Jim’s recommendations for crank length for aero-minded TT and triathlon competitors
  • 32:15 the aero / power trade-off
  • 36:30 is there any reason not to go for the shortest available crank?
  • 38:00 how does crank length affect self-selected cadence?
  • 40:00 what about aero drag implications of cadence
  • 43:00 the myth of optimal cadence
  • 48:15 on pedaling mechanics training
    • Self-selected pedaling technique is the most efficient
  • 57:30 the effect on efficiency of non-round chainrings

Determinants of metabolic costs during submaximal cycling
Metabolic power and efficiency for an amputee cyclist: implications for cycling technique

1 Comment

Post A Comment