This book focuses on sports performance. According to the Longman Dictionary of Contemporary English, "performance" refers to "how well or badly a person, company etc. does a particular job or activity" and "high performance" describes "cars, computers etc. that are able to go faster, do more work etc. than normal ones." In the 100-m dash Usain Bolt is indubitably the fastest person in history and Javier Sotomayor, the world record holder in the high jump, has exhibited the highest level of performance in this event. In these contests, the index of sports performance is unitary; it...