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cheap jordans men The researchers recruited 18 competitive runners to complete 3,000 cheap jordans on sale meter time trials cheap yeezys (about two miles) on an indoor track, once a week for three weeks. Unbeknownst to the runners, small lead pellets were sewn into two of the three pairs of racing flats theywore. cheap jordans men

cheap jordans real authentic By themselves, the shoes weighed 7 cheap jordans free shipping to 8 ounces each, depending on size. cheap jordans china The pellets added about 3.5 ounces (or the weight of a deck of cards) per shoe for one pair, and about 10.6 ounces per shoe for the second pair. cheap jordans real authentic

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cheap jordan sites To help prevent the runners from detectingextra weight, the researchers put their shoes on for them. Still, the runners noticed the difference:In their time trials, theypaced themselves differently cheap jordans from china and for every 3.5 ouncesof lead added per shoe. The researchers calculated that elite runners wearing shoes 3.5 ounces lighter than normal could potentially run a marathon about 57 seconds faster. cheap jordan sites

cheap authentic jordans for sale online The study also measured how much energy the runners expended by testing theiroxygen consumption and carbon dioxide productionas they ran on a treadmill wearing each pair of shoes. The results compared well with previous studies and matched the results of the indoor track time trial showing that energy costs rose by about 1%with each 3.5 ounces of extra shoe weight. cheap authentic jordans for sale online

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cheap jordans mens size 11 Don’t go out and buy a new pair of running shoes just yet, though. He recommends that shoppers keep this cheap nike shoes trade cheap jordans for sale off in mind when choosing a running cheap air force shoe that feels good lightweight still but adequately cushioned on their feet. cheap jordans mens size 11

cheap air force ones The study cheap Air max shoes was funded by Nike and published in the journalMedicine Science in Sports Exercise. cheap air force ones

cheap jordan 13 All products and services featured are selected nikeairjordanretro by our editors. Offers may be subject to change without notice. 2017 Health Media Ventures, Inc. The material in this site is intended to be of general informational use and is not intended to cheap jordans in china constitute medical advice, probable diagnosis, or recommended treatments. See the cheap adidas Terms of Cheap jordans Service cheap jordans shoes and Privacy Policy (Your California Rights)for more information. Ad Choices EU Data Subject Requests cheap jordan 13.

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