Flywheel Exercise: Biomechanics

Flywheel Resistance Exercise: Biomechanical Considerations - this is a version of my recent keynote lecture at the Brazilian Congress of Biomechanics.

Flywheel training is an increasingly common form of resistance training, using isoinertial resistance to potentially overload the eccentric phase of the movement. Common flywheel devices include the Exxentric kBox and kPulley. In this video, I present an overview of our sport science research on the biomechanics of flywheel resistance exercise.

The video will cover flywheel (isoinertial) resistance exercise, a kinetic and kinematic comparison with other forms of resistance such as a back squat or Smith machine squat, as well as applications to acute post-activation performance enhancement. In doing so, I will discuss the force-velocity relationship, discrete and continious biomechanical analysis methods, coordination and control, post-activation potentiation / performance enhancement, and dynamic correspondence.

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00:00 Introduction
02:22 What is flywheel resistance exercise?
07:15 Kinematic comparison of flywheel and barbell back squat
17:08 Coordination and control of flywheel squats
33:42 Effect of inertia on velocity and power of flywheel squats
38:53 Kinetic comparison of flywheel and Smith machine squat
46:34 Application of flywheel exercise to acute performance

More videos of our research:    • My/Our Sports Biomechanics Research  

Other videos mentioned:
Muscle mechanics:    • Muscle Mechanics | Prof Walter Herzog  
Survey of flywheel practitioners - video summary:    • Understanding Sports Science with Kevin De...  
Discrete vs continuous analysis lecture:    • Discrete vs Continuous Biomechanical Data ...  
SPM in 6 min tutorial:    • Statistical Parametric Mapping (SPM) in 6 min  
Countermovement jump coordination and control:    • Countermovement Jump Coordination and Control  

Key references (in order of appearance):
McErlain-Naylor, 2017 (PhD thesis): https://www.researchgate.net/publicat...
de Keijzer et al., 2022 (survey of practitioners): https://www.researchgate.net/publicat...
Pataky, 2012 (SPM): https://www.researchgate.net/publicat...
Pataky, 2010 (SPM): https://www.researchgate.net/publicat...
Robinson et al., 2021 (SPM power analysis): https://www.researchgate.net/publicat...
McErlain-Naylor & Needham, 2021 (CMJ coordination): https://www.researchgate.net/publicat...
Needham et al., 2020 (colour mapping): http://eprints.staffs.ac.uk/6206/1/Fo...
McErlain-Naylor & Beato, 2021 (inertia-velocity & inertia-power): https://www.stuartmcnaylor.com/public...
Weakley et al., 2021 (velocity-based training): https://www.researchgate.net/publicat...
Blazevich & Babault, 2019 (PAP / PAPE): https://doi.org/10.3389/fphys.2019.01359
Beato et al., 2019 (flywheel vs traditional PAPE): https://doi.org/10.1371/journal.pone....
Beato et al., 2021 (effect of rest period on PAPE): https://www.researchgate.net/publicat...
Beato et al., 2021 (medium / high inertia PAPE): https://www.researchgate.net/publicat...
de Keijzer et al., 2020 (effect of volume on PAPE): https://www.researchgate.net/publicat...
Beato et al., 2020 (PAPE review paper): https://www.researchgate.net/publicat...
Beato et al., 2020 (squat / deadlift PAPE): https://www.stuartmcnaylor.com/public...
McErlain-Naylor & Beato, 2021 (vertical / horizontal GRF PAPE): https://doi.org/10.3390/sports9010005

Web: https://www.stuartmcnaylor.com
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