Ep. 5 Sponsor: Festka
Frames made from the combination of the best carbon and graphite industrial fibers used in the spacecraft industry, handcrafted with tube-to-tube connections, Ti drop-outs, and modern finishing materials. Festka produces state of the art bicycles in 24 different sizes as well as custom geometries and sizes.
BikeFit Podcast listeners receive custom geometry, a $340 value, for free! Just contact Festka via their website and be sure to mention the BikeFit Podcast!
In Episode 5, I connected with CEO and founder of G8 Performance, David Lee. While there is, of course, some inherent bias as I need to mention that BikeFit is the North American distributor of G8 insoles, the conversation with David is not a sales pitch but rather an exploration of the often ignored and overlooked extremity of the body: the feet.
David transitioned from an investment banker to a member of an elite special forces unit in the US Army to the eventual company owner and relentless advocate for the promotion of foot health. He focuses on on the foot as a microcosm of its own rather than the belief that the “foot is just a lever.”
We discuss the dangers of current footwear, how they significantly impact and injure the feet, the brain’s connection to the feet, and the imperative need to promote movement and blood flow within the foot during any type of athletic activity.
The Dive: Ep. 5 Topics:
- Foot movement during force expulsion
- How the use of modern running and cycling shoes affects nerve receptions and muscle atrophy
- The Golden Ratio 1:1.618 as seen in the pyramids and the Mona Lisa.
- Cycling shoes are worse than running shoes
- The foot as a lever vs. its own piece of complicated machinery
- Calf and Achilles issues in cycling
- The foot is an ecosystem–an ant mound.
- The foot has the highest concentration of nerve endings in the body
- Comparing insole types
- Foot function and movement in the shoe
- Rehabilitation possibilities of an insole
- G8 benefits
- The connection, or lack there of, with brain to foot based on insole
- Foot correction affects other parts of the kinetic chain
- The lifecycle of an insole
- Benefits of a flexible orthotic
- Bike fitting and injury prevention should start with the foot
David references a number of scholarly articles in the podcast. Please see the links below for more information:
- Edward P. Mulligan and Patrick G. Cook, “Effect of plantar intrinsic muscle training on medial longitudinal arch morphology and dynamic function,” Manual Therapy, 2013, Vol: 18, Issue: 5, Page: 425-30.
- Takayuki Hashimoto and Keishoku Sakuraba, “Strength Training for the Intrinsic Flexor Muscles of the Foot: Effects on Muscle Strength, the Foot Arch, and Dynamic Parameters Before and After the Training.” J Phys Ther Sci. 2014 Mar; 26(3): 373–376.
- K. E. Gordon and D. P. Ferris, “Learning to walk with a robotic ankle exoskeleton,” J. Biomech., vol. 40, pp. 2636–2644, 2007.
David Lee’s approach to the health of feet is simple: to reduce injury and increase athletic performance for everyone, whether you are a professional athlete, a weekend warrior, or someone who simply likes to go for a social walk or a bike ride.
David has long understood what it means to have issues with foot pain, numbness, calf cramping, and shin splints, suffering from these since he was a teenager. These issues were exacerbated for him during his time as a soldier in the US Army from 2003, where he worked and trained with US Elite Special Forces, and throughout six deployments, where the pressure and stress on his feet and legs were unparalleled.
After leaving the army and returning to Australia, David sought solutions to his foot issues, at one time importing an adjustable orthotic device from the United States. This had its limitations, so he ultimately decided to develop his own product – and from there, G8 Performance was born.
David has been active within the performance orthotic industry since 2010, owning G8 Performance since 2012. Unlike other insole and orthotic solutions which merely provide a “band-aid” approach to foot issues, David’s business seeks to actively address the core problems which cause pain in the feet and which can be referred into the legs, ankles, knees and even the hips. He also wants to change the way the industry approaches feet – both in the cycling and sporting arena, as well as in everyday life.
David’s vision for the future is to bring “podiatry to the people” via outlets that prescribe customized foot solutions and which consider the function of the foot within a shoe – regardless of whether it is a cycling shoe, an athletic shoe, or even everyday footwear. With improved dynamic foot health, athletic performance is enhanced and injuries are reduced.