When you see more and more friends, colleagues, and your neighbors running shoes, it means that the jogging movement is growing and covering up the group of amateurs.
Shoe manufacturers therefore also take advantage of this customer. They constantly innovated and launched new shoe sole technologies, in order to find the balance between cushioning, stability and thrust that shoes can create.
But despite the wave of technological improvements, recent studies show that joggers are still at risk of high injury and discomfort with the shoes they use. So for what reason are new shoe technologies still unable to solve these problems?
Paradox of running shoes: Good technology still increases the risk of injury
Paradox jogging shoes
Jogging of course brings many health benefits. But statistics show that this trendy sport is not without its downsides. Jogging can cause problems such as sprains, muscle strain or overload conditions that result in injury or discomfort in the legs and back.
One in three joggers has one injury at least once a year, according to an article examining scientific literature on the subject. In addition, the Science Report recently published a study showing that:
Although shoe companies spend decades trying to create new technologies, aiming to minimize the impact of running on the body, they seem to be unsuccessful, and sometimes also counterproductive.
To understand this paradox, the study authors compared two types of running shoes with conventional and one with MAX (43 mm thick in the heel and 37 mm in the front). Volunteers involved are 12 healthy men between the ages of 22 and 32.
They are required to run at different speeds (10km / h and 15km / h) for researchers to record video. The findings from these videos show that when wearing MAX padded shoes, the impact of the foot on the ground is greater than that of regular shoes.
Researchers from the University of Helsinki concluded that running with thicker padding changed the normal operation of the legs, thus creating more effects, instead of limiting these forces.
Running shoes with thicker pads have changed the normal operation of the legs, thus creating more impacts, instead of limiting these forces.
Thick padded running shoes make the legs harder and touch the ground stronger
The main researcher of the paper, Juha-Pekka Kulmala, explains his conclusions with biomechanics arguments.
When we run, our feet work like a spring. It compresses when the foot touches the ground and relaxes when the foot lifts. Thick padded shoes have taken on too many compression tasks, making the legs do not need to compress much and bend less at the knees and ankles.
This is clearly observed on the videos that the research team returned. And according to Kulmala's hypothesis, the rigidness of thick cushioned shoes, and that stronger impact on the ground may be the cause of increased risk of jogging injuries.
When we run, our feet work like a spring
So does this mean that we should not choose shoes with thick cushions?
Jose Víctor Alfaro, a surgeon at the Spanish Royal Athletics Federation (RFEA), who works for Real Madrid football club, and founded a network of specialist clinics to answer This question, he said:
"After treating nearly 400,000 patients, we have never found two identical feet, as well as those who are similar in casting. ".
In his opinion, you cannot draw a general conclusion that high-cushion shoes are not good for everyone. We simply can't be sure that something will be better for a much bent or elastic foot, compared to a very flat or rigid foot, Alfaro said. "Formula is no recipe at all".
Similarly, Alfaro believes that a technology cannot be considered good or bad. "All technologies that serve us today have a real effect, thanks to the important technical research and development results behind it.", he said."But [thực tế cho thấy] These technologies can be helpful for a certain runner, [nhưng chính công nghệ đó lại] can hurt another person ".
If you think about it this way, the results of the new study in the Science Report should only be believed with half the suspicion. "You can find articles that validate that result or criticize the opposite. It will depend a lot on the research team"The surgeon working at Real Madrid said.
In fact, this article has been reviewed by other researchers and confirmed its conclusions.
It seems that after this study, choosing shoes will definitely become a bigger concern for jogging lovers.
We need new materials to create revolution
For shoe manufacturers, cushioning technology is considered a spearhead in the goal of innovation and innovation. In the past, people often sold only those shoes that were advertised with the phrase "rubber soles"It is enough. But now, shoe soles can be made from many different materials, be it synthetic rubber, thermoplastic polyurethane, smart polymer or foam until recycled bagasse …
And to get good ventilation and support, the upper part of the shoes is also made up of increasingly sophisticated fabrics and fibers.
"But the most important advances are still happening at the bottom", Alfaro said."This is the area that has the greatest impact, because it is the grounding and recapturing energy [từ cú tiếp đất ấy]".
Along with the base, each shoe company now chooses its own way. While Nike aims to improve the reaction from the base, Mizuno is committed to finding a balance between cushioning and stability, Asics is more focused on combining lightness and flexibility.
Depending on the set of customers, these technological improvements will appeal to them with benefits, or vice versa, which can cause injury. After all, there is no best approach for everyone.
"Because of them [mỗi hãng giày] There is a very specific goal, these core technologies should be assigned to specific runners"The Real Madrid surgeon concluded. It seems that after this study, choosing shoes will surely become a bigger concern for jogging lovers.