This video aims to provide a comprehensive look at zero drop and low drop shoes, debunking common myths and explaining their benefits and drawbacks. The speaker, Dr. Zach, clarifies what constitutes a zero drop shoe, discusses the historical and modern reasons for shoe drop, and analyzes the physiological effects of wearing zero drop shoes on the body, particularly concerning the knee and Achilles tendon. The video also touches upon foot strike mechanics during running and offers recommendations for those considering or already using zero drop footwear.
What are low and zero drop shoes? Zero drop shoes have no height difference between the heel and the forefoot. Low drop shoes have a difference of less than 6mm.
What is the historical origin of the heel drop in traditional shoes? The heel drop originated from the need for better foot stability in horse stirrups and later became a status symbol associated with horseback riding.
How did the heel drop evolve in athletic shoes? Bill Bowerman at Nike theorized that a longer stride with a heel strike was optimal for running, leading to the addition of cushioning in the heel and a higher heel in running shoes.
What are the claimed benefits of zero drop shoes for the knee? Proponents claim zero drop shoes offer pressure relief and shock absorption for joints. Research suggests they can reduce stress on the front of the knee, specifically the patellofemoral joint and patellar tendon.
How do zero drop shoes redistribute shock compared to traditional shoes? Instead of absorbing shock in the heel, zero drop shoes redistribute the ground reactive forces, potentially placing more stress on the Achilles tendon.
What is the main concern regarding the Achilles tendon when using zero drop shoes? Zero drop shoes allow the Achilles tendon to "eccentrically load" or stretch more. If the Achilles tendon is tight, this can increase the risk of Achilles tendonitis, rupture, or plantar fasciitis.
Can zero drop shoes help make the Achilles tendon more flexible? Yes, over time, consistent use of zero drop shoes can allow the Achilles tendon to become more limber and compliant, increasing its range of motion.
What foot types are less likely to benefit from zero drop shoes? Individuals with rigid flat feet or hypermobile flat feet, or those with bony blocks in their ankle, may not benefit and could experience issues due to instability or limited stretching capacity.
How do zero drop shoes affect running gait? Zero drop shoes tend to encourage a mid-foot or forefoot strike, which can lead to a more efficient gait with less braking force.
What are key recommendations for someone considering zero drop shoes? It's important to have a dedicated Achilles stretching routine, ensure you have the correct foot type and running strike, and consider that they are best suited for more natural surfaces or specific training goals.
