Episode 228: Cal Dietz and Chris Korfist on RPR, injury, foot training, and periodization

This episodes sees the return of Chris Korfist and Cal Dietz.

The guys were previously on the episode 215 along with JL Holdsworth to discuss RPR.

Unlike most facilities who are staffed by young coaches who rely on their recent playing career and “cool” factor, Slow Guy Speed School is staffed by Chris Korfist, a “sprint guru” with an international following.

With over 55 all-state sprinters and countless other high school all-state athletes, and over 20 years experience, he knows what is appropriate for the athlete in the room and not so concerned about what the pros are doing or someone else journey to where they got.

In fact, the methods have been so effective, Chris has consulted NFL teams, Big 10 Universities, Olympic team and U.S. Special Forces.

Cal Dietz has been an Olympic Sport Strength and Conditioning coach for numerous sports at the University of Minnesota since 2000. During his tenure, Dietz has trained athletes that have achieved 400+ All-American honors, Teams that have won 33 Big Ten/WCHA championships teams and 10 NCAA Team Champions. He has consulted with Olympic and World Champions in various sports and professional athletes in the NHL, NFL, NBA, MLB, MMA and Professional Boxing.

On this episode guys and I discuss:

  • I ask the guys what kind of response they have gotten from individuals who have taken and implemented RPR into their training system
  • Where does RPR fit into the guys program design
  • I ask the guys have they any data on the efficacy of RPR and performance measures 
  • Why non contact injuries are prevalent in many sports
  • We discuss foot training 
  • Cal shares with us some thoughts on individualizing periodization schemes 
  • We discuss false assumptions and misconceptions about Triphasic training


This was an outstanding episode and I hope you all enjoy it as much as we did!

Stay Strong,



Show Notes:

Website - www.reflexiveperformance.com

Online course - RPR - Level 1

Chris Korfist:

Website - slowguyspeedschool.com

Facebook - Chris Korfist

Twitter - @korfist

Instagram - korfist1

YouTube - korfist

Cal Dietz:

Website - triphasictraining.com

Facebook - Cal Dietz

Twitter - @Caldietz

Instagram - cal.dietz

YouTube - Calvin Dietz


Books Mentioned:

Human Locomotion: The Conservative Management of Gait Related Disorders

Hymns of the Republic: The Story of the Final Year of the American Civil War

Make it Stick


People and Resources Mentioned:

Reflexive Performance Reset Level 1 online

JL Holdsworth

Dave Tate

Gait Guys

Thomas Michaud

Mike Boyle Strength and Conditioning


Phillip Beach 

Anna Hartman


Shawn Allen

Frans Bosch

John Pryor

Tom Tombleson

Allen Robinson

Nick Winkelman 

Keir Wenham-Flatt

Daniel Kahneman

Jack Kruse

Edward Bernays

Mladen Jovanović

Al Vermeil

Isaac Newton

Dan Fichter 

Westside Barbell

Charlie Francis

Functional Movement Systems

Gray Cook

Shawn Myszka

Mark Uyeyama

Vern Gambetta

Track Football Consortium

Tony Holler

Mike T Nelson

Carrick Institute 

Bill Hartman

Jim Kwik


Show Sponsors:

Ultimate Performance Online Mentorship

To get INSTANT ACCESS to almost 20 hours of World Class online video Strength and Conditioning Information go to upmentorship.com



ALTIS Education


Ultimate Athlete Concepts

Ultimate Athlete Concepts is a multi faceted company, providing the most sophisticated scientific material in sport science. UAC is the worlds leading resource for translated sport preparation educational material. 


National Sports Performance Association

Certified Program Design Specialist

Certified Speed and Agility Coach

Cerfitied Weightlifting Performance Coach

Certified Sports Nutrition Coach


Athletes Acceleration

Complete Warm Up

Complete Speed Training

Complete Speed Games

Complete Jumps Training

Complete Olympic Lifting

Complete Youth Training

Complete Guide to Training the Female Athlete

Complete Core

Complete Sports Conditioning 

Complete Sports Nutrition

Complete Program Design

Sports Camp Empire



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