This new edition of Kinesiology: The Mechanics and Pathomechanics of Human Movement is a very timely arrival. Hardly a day goes by without a newspaper or magazine article extolling the values of exercise as a regular and enduring part of daily activity. Exercise can only become a sustained part of daily activity if it does not cause injury, but any exercise regimen creates the potential for injury to the musculoskeletal system. A challenge of exercise is finding the right balance between activity that enhances tissue health versus that which injures tissues. Optimizing the precision of movement is the key to achieving this balance. A clear understanding of the precision of movement and its contributing factors requires a thorough knowledge of kinesiology. In the field of physical therapy, the focus is on movement and movementrelated dysfunctions or impairments; thus kinesiology is the science that provides physical therapy's major foundation