Ummm now this is an interesting idea…
http://www.velocy.com/hypothesis.php
Gravity: Friend or foe. - The Velocy Hypothesis
Background
Velocy is a team of individuals dedicated to improving athletic performance and reducing risk of injuries through the development of technologically advanced footwear. Our research of the past 10 years has included the study of various animal species, and identifying the factors that allow them to accelerate rapidly and maintain efficiency over extended distances.
Through this research, Velocy has unlocked nature’s secret in harnessing the force of gravity that has aided these animals. We have named this effect of nature "FORWARD GRAVITY"™. FORWARD GRAVITY allows for moving the center of mass forward in the direction of movement and utilizes natural stabilizing systems such as wings, tails, limbs, and claws to counterbalance the amount of forward lean necessary to achieve optimal rates of speed and efficiency.
Humans do not have the means to counterbalance their center of mass. Hence as 100 meter sprinters leave the blocks they can only maintain a forward lean as they accelerate. At 65 -70 meters acceleration has ceased, and top end speed has been achieved; sprinters then attempt to maintain that speed to the finish line with muscular ability.
At Velocy we have developed, through a patent pending technology, the means that allows humans to maintain a forward lean in the direction of movement like our animal counterparts. Velocy’s technology improves body mechanics in relation to foot mechanics through a synchronized unit that allows humans to achieve greater power, balance and stability, enhancing performance and efficiency while reducing risk of injury.
Velocy Hypothesis
Conventional footwear technologies focus on the heel as the primary support and balance system. That’s why virtually every major running shoe company focuses on ‘cushioning’ and ‘shock absorption’. But what if heel technologies are not the answer? What if gravity is actually a friend and not a foe?
It has long been thought that running is primarily a function of leg, foot and muscular ability. At Velocy we also believe this to be true, but in re-examining gravitational forces in human locomotion, we have discovered that harnessed gravitational forces can play an intricate role in velocity, acceleration and harmony in movement. The result of all forces working in synchronicity leads to increased efficiency, higher performance levels, injury prevention and comfort. That’s why Velocy has developed a technology that enables the body’s center of mass to be rotated to a position ahead of vertical in the direction of travel in walking and running, and there-by allowing for maintained momentum with every stride.
Technology Explained
Forward Gravity™ Technology is engineered to assist in human locomotion by providing a support chassis at the forefoot that allows it to serve as the primary support and balance system during walking and running. Forward Gravity also reduces braking forces by shifting the emphasis of support from the heel to the forefoot. Thus relieving stress on the heel, ankle, knees, and the rest of the body. Forward Gravity enables an individual to harness the force of gravity by converting vertical forces into horizontal momentum. In other words, Velocy works with the force of gravity to create forward movement. Designed to deliver proper body mechanics, Forward Gravity results in a smooth, non-jarring stride that makes you feel energized and in full control of your core with every stride.
Velocy. Move with gravity™
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) and i haven’t had any trouble with this. (Especially the latter pairs). I usually get trail runners for training shoes, so they might hold up better.