NSCA’s Coaching Podcast, Episode 117: Dr. John McMahon

Take a deep dive into force plate research and trends with “Force Plate Coach”,  Dr. John McMahon from the University of Salford in England. In this episode, John discusses his path from Royal Marine Commando into strength and conditioning and biomechanics teaching and research. Listen in as John connects with NSCA Coaching and Sport Science Program Manager, Eric McMahon, on the past, present, and future of force plates in sport and the ways we can improve our testing and evaluation of athletes.  

This episode mentions the following paper from NSCA’s Strength and Conditioning Journal: 
McMahon, JJ, Suchomel, TJ; Lake, JP, and Comfort, P. Understanding the Key Phases of the Countermovement Jump Force-Time Curve, Strength and Conditioning Journal 40(4):  96-106, 2018  
 
Find John on Instagram: @forceplatecoach, on Twitter: @ForcePlateCoach, and on YouTube: @ForcePlateCoach| Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

Show Notes

“Some more of your fast stretch shortening cycle tests, like the drop jump and the multi-rebound jumps, as well as the countermovement jump test, just to try and map the way in which practitioners would like to use their force plates with their athletes to get more of a holistic overview of what their neuromuscular status is at any given time.” 13:55

“So those two mechanisms were raised as red flag flags and in the effect sizes they were considered moderate to large changes in countermovement depth and body weight that we saw immediately post-match. Now, if we didn't have a force plate, we wouldn't know that those changes had occurred, or we would say is that the jump height was the same post-match.” 22:21

“And because we tend to use jump height as the key outcome variable that was displayed on the screen in the scoreboards. Those athletes will see that there's no improvement to their previous period. But if they're 5 kilos heavier that means that they've applied a greater impulse in total to their body center of mass.” 24:50

“I assessed the PhD student earlier this year that's effectively been involved in the British Army, saw a different regimen that they now use the isometric mid-thigh pull to inform the job roles that they can apply for when they commence their training, believe it or not. So they've got certain key performance indicators like, in terms of peak force relative to body mass, that people must be able to pull, or push I should say.” 49:41