The formulation “treadwheel” is used when teaching proper technique. This basic element is taught in conjunction with foot placement because it forms the correct movement pattern.
In simple terms, when you run, your feet should move in a circular motion or close to it.
The problem is that such shoes not only impede the development and recovery of weaknesses formed as a consequence of degradation of the musculoskeletal system, due to lifestyle and generally accepted standards of footwear, but also make them even weaker. The predictable result is an increased susceptibility to injury.
If you remove the wheel from under the monocyclist, you get jogging. In this case, as we can see, his head always remains in one line, that is, there are no vertical oscillations of the total center of mass of the body (TOMC).
This is the reason to pay serious attention to the question, because any upward push of the CMT requires, over a long distance, in the aggregate, a tremendous investment of energy. But are in most cases useless, because we only care about forward motion. If we are talking about asphalt, of course.
However, despite the desire and frequent recommendations to completely eliminate vertical oscillations, this task is not only difficult, but also wrong. They should be optimized to minimum values, but not eliminated altogether.
The treadmill is formed at a good pace by the slamming of the shin after pushing off and sufficient lifting of the knee after carrying the foot, after which the shin inertia should unfold, the knee should drop, and the foot should sink gently to the surface approximately under the center of gravity of the body. This is easily accomplished by the width of the stride at high speeds. Nevertheless, at low paces in jogging and jogging, circular movements should also be present.
The wheel-like design can have an infinite number of points of contact with the surface, alternating with each other, unlike the number of legs in a runner. But this drawback is compensated for by the high cadence (stride frequency), which in athletes is 180 steps per minute or more, and in amateurs on average 164.
In other words, the principle of the wheel can be described as follows: In no case should the leg be stationary relative to the body and wait to meet the support. In such cases, you get movement not by running, but by jumping. In other words, the imaginary running wheel should not stop its rotation for a second, just like its material counterpart, and the supporting foot should spend as little time on the ground as possible.