Dr. Jeff Messer is both a high school coach and an exercise physiologist.  He is widely recognized as one of the best high school coaches in the country.
This interview is a rebroadcast of an interview between Jay Johnson and Dr. Messer from Jay's CoachJayJohnson podcast.  At the time of that recording Dr. Messer was coaching at Xavier College Prep; he now coaches at Desert Vista, both in the Phoenix, AZ.
Dr. Messer has presented at the Boulder Running Clinics.  You can watch excerpts from his presentations for free on YouTube or you can purchase the entire presentation - both video and audio files - at BoulderRunningClinics.com.