The invention is directed to intelligent systems (106) for articles of footwear (100) that adjust automatically in response to a measured performance characteristic. The intelligent systems include one or more adjustable elements (124) coupled to a mechanism (130) that actuates the adjustable elements in response to a signal from a sensor (122) to modify the performance characteristic of the article of footwear. The intelligent system adjusts the performance characteristics of the article of footwear without human intervention.
