Frederic Sabater Pastor is a Postdoctoral Researcher at the Inter-university Lab of Human Movement. His area of focus is running, trail, performance, physiology, and fatigue.

Paper on physiological variables related to ultramarathon performance.

Previous papers on the subject- 

Physiological Determinants of Ultramarathon Trail-Running Performance

Predicting Trail-Running Performance With Laboratory Exercise Tests and Field-Based Results

Frederic on Twitter

Buy Koop’s new book on Amazon or Audible

Information on coaching-

www.trainright.com

Koop’s Social Media

Twitter/Instagram- @jasonkoop