The Journal
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, by Craig Norton What 4 Factors Define Trail Running Shoe Performance?
Find out the answer with the Optimal Performance Index System (OPIS) comparison of the Brooks Caldera 8 and Salomon Speedcross 6 trail running shoes.
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, by Craig Norton Do PowerStep Maxx Insoles Improve Trail Running Shoes?
Find out the answer with the Optimal Performance Index System's structural comparison of the Brooks Cascadia 18 provided insole and the PowerStep Maxx insole.
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, by Craig Norton Step Up Your Game: A Performance Breakdown of Two Top Tennis Shoes
This guide compares the Asics Solution Speed FF3 and Challenger 14, helping you choose between speed-focused performance or stability and support.
