Three-quarters of runners who wear shoes land squarely on their heels - about 1,000 times for every mile run. But even well-cushioned sports shoes that help distribute weight across the foot can not fully absorb the shock of these blows: 30% - 75% of regular runners each year suffer repetitive stress injuries.
By contrast, the vast majority of unshod runners don't hit the ground with their heels, landing instead on the sides or balls of their feet, the study found. The practice is especially common in several east African countries where long-distance running is nearly a national past time.
By not "hell-striking", barefoot runners avoid painful and potentially damaging impacts that concentrate the equivtalent of 2 or 3 times one's body weight on to a coin-sized surface. People who don't wear shoes when they run have an astonishing different strike. By landing on the middle or front of the foot, barefoot runners have almost no impact collision, research showed.
Be aware, up to now there has been little scientific evidence suppotring the claim that barefoot is better. Most people today think that barefoot running is dangerous and hurts but actually you can run barefoot on the world's hardest surface without the slightest discomfort and pain, the study found.
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