Foot supination, a.k.a. underpronation, occurs when your weight rolls onto the outer edges of your feet as you land each foot strike on the run. In a healthy stride, your foot should roll inward a bit ...
Correspondence to Dr Roger Hawkes, European Tour Performance Institute, European Tour, Wentworth Drive Virginia Water, Surrey GU25 4LX, UK; RAH{at}wkes.eu The extensor carpi ulnaris (ECU) muscle plays ...