The latest study by Roger Kram and co workers found the following: Methods Ten experienced barefoot runners (mean + SD, age: 30.2 + 9.1 yrs) ran at 3.35 m/s with a mid-foot strike pattern on a Quinton 18-60 motorized treadmill modified to have a calibrated digital readout of speed. This classic treadmill has a rigid steel deck. All subjects gave written informed consent as per the Univ.
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Cushioning reduces the metabolic cost of running
