Sweat Science: via @RunnersWorld

Sweat Science: via @RunnersWorld

Does the cushioning in running shoes do anything useful? That's a bit of a controversial topic these days, with people like Chris McDougall arguing that "cushioned running shoes are a fraud " that don't help and probably hurt you. Back in February , Rodger Kram and his colleagues at the University of Colorado published a neat study that showed that the cushioning in running shoes actually saves energy when you run. Without cushioning, the theory goes, your leg muscles have to do some work to absorb the impact of landing, which costs energy. That first study compared shod and barefoot running, using small weights to equalize the mass on the runners' feet. (For every 100 grams of shoe mass, you spend about 1% more energy running.) That left open the question of whether strapping these small weights to the runners' feet distorted the results. The new study, by Kryztopher Tung...

Full article: http://sweatscience.runnersworld.com/2012/10/invisible-sh...

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