Strength, power and speed are all related, but the relationship is more complex than it seems. Leading sports scientist JB Morin has dedicated his research to finding out more about the relationship, what coaches can learn from it, and how that can make training better. On this week’s episode of the podcast, he joins us to discuss force-velocity profiling, transfer of training, and many more aspects of getting faster.
Notes and quotes
Morin is a full professor on the Faculty of Sport Science at the University of Nice Sophia Antipolis in France. He has a PhD in human motor function and has written more than 100 papers on a variety of sports science topics. He is at the forefront of research on sprinting and speed. Our conversation focused on his research into force-velocity profiling, transfer of training, the nuances of speed, and more.
- 0:00 – Research vs. practice.
- 1:30 – An introduction to force-velocity profiling. “The force output of the system is not the same at different contraction velocities. Profiling describes the signature relationship between force and velocity. “
- 4:15 – Examples of testing protocol and ways to test.
- 6:00 – Integrating testing with training and examples of making testing actionable. “You can use force-velocity profiling to see where the athlete is at, but you can also use it to design training. “
Specificity and transfer of training
- 11:30 – Specificity and force-velocity profiling: “The higher the athlete level, the lower the level of correlation between force-velocity profiles of different movements. “
- 13:30 – Transfer for beginning athletes. “Beginners are like a full tube of toothpaste, press anywhere and something comes out. But elite athletes are nearly empty tubes, you have to find the right place to push the tube for anything to come out. “
- 15:00 – Using force-velocity profiles in more specific movements.
- 17:00 – Distinguishing the difference between load-velocity profile and force-velocity profile.
- 18:15 – Limiting factors in sprinting: “Many coaches mistake force for maximum force possible. The limitation is often the ability to produce some force within time and velocity constraints. Strength has to be related systematically to velocity. “
- 20:00 – More on specific strength, american football, and more.
- 22:30 – Training inside vs. outside the weight room and training general vs. specific strength: “We should not focus on where the strength training is done, but what speed it is done at. “
- 24:30 – Applying force at speed: “There is no relationship between the force output at low and high velocities. Just because you are super strong when the movement is slow does not mean you will be super strong when the movement is fast. “
- 25:30 – Resisted running and finding the right training intervention for different athletes.
- 30:15 – Training strengths and weaknesses. “You can work on your strength as much as you want, but at some point you will be locked in by the weak points. “
- 32:00 – Putting force-velocity profiling in context of the overall performance puzzle.
- 32:45 – Thoughts on throws training.
- 35:00 – Thoughts on Christian Coleman.
To hear more on these topics, listen to the full episode above. Also be sure to subscribe to our podcast and review it on iTunes.
The following links were referenced in the podcast or provide some additional reading material on the topic:
- The site theme in May is training speed. We started covering the topic on the GAINcast with Vern’s experiences on training speed and on the HMMR Podcast where Brian FitzGerald debunked sprinting myths. We’ll have several new podcasts, articles and videos on the topic. Join HMMR Plus so you don’t miss all the content on this topic.
- Morin has put together lots of resources on his website. You can also find his original papers on researchgate and follow him on Twitter (@jb_morin).
- A great tool for calculating the force-velocity profile is the My Jump app.
- We have had several other sprint researchers on both the HMMR Podcast and the GAINcast: Episode 94 and GAINcast 21 with Ken Clark, as well as GAINcast 89 with Peter Weyand.
- For more resources on speed and sprinting, see our topic overview, including interviews and videos with other top sprint coaches like Jonas Dodoo, Pat Connolly, Gary Winckler, John Pryor, Joe McNab, Vern Gambetta, and more.