How do you know it was time to change the running shoe

You change your running shoes only because they get worn out and look presentable? Of course, the appearance of significant, but it is not the sole criterion of fitness shoes. There are more factors such as depreciation, traction, internal space microclimate. And all these things through the eyes are not visible, but they play an important role.

From what degree depends wear sneakers

If you look for information on the web about this issue, at many sites you will find an indication of the number of kilometers - from 500 to 1000. This is the distance you have overcome, after which it is recommended to change the sports shoes.

I was wondering, where did those numbers and whether you can trust them? I have tried to carry out his journalistic investigation with the help of Google and find out. And to my surprise, after two hours of searching I did not find any scientific or even logical arguments in their favor. The figures just given by the authors without any explanation.

I have the feeling that these figures - someone's attempt to give people some kind of averaged landmark. And maybe just a marketing gimmick that spawned online shopping to stimulate sales.

In any case, revising a lot of material, I came to the conclusion that the distance of 500-1000 km is not a factor and not the amount that can be relied upon. On it there are at least three reasons.

1. Bodyweight. The more weight the athlete has, the faster it comes into disrepair shoes. That is, if a person's weight 75 kg, then the life of his running shoes is more than the same shoe belonging to a person weighing 110 kg.
2. Surface. From the surface, on which the training depends on how quickly worn soles. On the pavement will wear one, on the ground - a completely different, and the "rubber band" of the stadium - the third.
3. The frequency of use. At this point, everything is logical. Footwear that is used once a week, will last longer than the shoes that wear every day.

As you can see, many factors affect the wear of shoes, and it is impossible to reduce everything only to the distance. Therefore 500-1000 kilometers, after which you need to change shoes, this is more myth than truth.

How do you determine what you need to change shoes

How can we determine when to change shoes? And to do so, as they say, to the eye, without using some sophisticated equipment, without subjecting them to laboratory testing.

damping properties

The most important part in running shoes - a sole. From the sole of the state depends on what kind of load test legs, joints, knees, feet and how comfortable feeling athlete during training.

To date, almost all the running shoe has a sole made of foam, which bears the name of EVA (ethylene vinyl acetate). It is popular because it has excellent damping properties and is very easy. This is achieved due to the fact that the foam is contained inside a plurality of air bubbles are compressed under each foot contact with the ground and provide cushioning. Over time, the bubbles burst and the effect of the strike force compensation of the surface is reduced.

One of the easiest ways to check the shock-absorbing properties of their shoes - a big push fingers on the middle of the sole, and to do so on the side surface, rather than the one that comes in contact with ground. If the sole is well pressed and see small wrinkles, the shoes in good order.

But if the surface is hard, unyielding, is a clear sign that it will compensate for bad blow. This additional load on the limb.

Appearance

Do not worry that your shoes are stained. It is of no importance, only shows that you use them. The only thing you should worry about is their overall wear.

Here are the visual signs you can distinguish shoes needs to be replaced:

1. The heel is fixed loosely and freely "travels" inside.
2. One sole became asymmetrical with respect to the other.
3. One or two once the shoe no longer stand upright on a flat surface.
4. Toes are issued ahead strongly pulling the fabric.

All these are signs that it is time to change shoes though purely for aesthetic reasons.

Comfort

The ancient Greeks were running naked and barefoot. It was uncomfortable, so come up with shoes. So, the shoes need to feet was as comfortable as possible. If this condition is not met, then what is the point of this shoe?

Our body is able to tell us when to change shoes. If you notice pain, itching in the feet, legs, knees, thighs, or somewhere else, it is a clear sign that something is wrong. And perhaps the reason in your shoes.

For example, I had a case where a running shoe suddenly torn and I was forced to wear a few times to run the old shoes until you buy a new pair. And every time I have noticed that after training I have aching loins. With new sneakers this unpleasant pain disappeared.

This may also include such an item as a clutch with the ground. If the sole is erased, shoes slides, it also causes some discomfort and interfere with productive exercise. Such shoes should be changed.

But often it happens that you get used to running shoes and do not notice any side effects on their wear. How to learn to feel the difference?

A few days after the purchase of new shoes, use them alternately with the old. So your body will feel the difference and remember the feeling.

And another important point. If your running shoes are worn out, it does not mean that they should go in the trash. It just means that they are no longer suitable for racing, but you can use them for walking, unless, of course, aesthetically they are more suitable for this purpose.

And what are the signs of wear shoes you know?