KoopCast

Durability in Ultrarunning with Ed Maunder PhD | Koopcast Episode 160

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Dec 29, 2022
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ANECDOTE

Durability Observed in Cycling

  • Coaches observed cycling races where riders drop off over successive climbs despite similar fresh tests.
  • They created power duration curves after set work to capture this durability concept practically before it was studied scientifically.
INSIGHT

Defining Durability in Endurance

  • Durability means how physiological variables like lactate threshold change during long exercise compared to fresh states.
  • More durable athletes show smaller declines in such variables, reflecting their resilience to prolonged fatigue.
INSIGHT

Lactate Threshold Drops with Fatigue

  • Lactate threshold power decreases about 10% after 2.5 hours of moderate cycling due to reduced efficiency and energy expenditure.
  • Reduced efficiency may be an important factor in running durability, potentially more so due to muscle damage from eccentric forces.
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