The study was published in Footwear Science and conducted by German researchers, who divided 47 women into three groups. Two groups did 30 minutes of "high-intensity athletic training" five times a week for three weeks. Half of them wore their regular running shoes, while the other half wore Nike Free 3.0 shoes. The third group did not train.
This is how the researchers describe the training:
Craig M. Kaufman, DPM
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