ing and displaying exertion dataWO2003063119A224 Jan 200331 Jul 2003Sensorpad Systems IncMethod and system for detecting and displaying the impact of a blowWO2008042765A128 Sep 200710 Apr 2008Admir Dado KantarevicAthletic equipment including a health and/or impact sensor* Cited by examinerClassifications U.S. Classification73/379.04, 482/84International ClassificationG01P15/18, A63B24/00Cooperativ