A comprehensive, practical, and current volume for physiologists, physicians, and technicians interested in exercise physiology, pathophysiology, and testing. It describes how to evaluate patients with exercise intolerance using the physiology and pathophysiology of gas exchange as frames of reference. The final chapter consists of 79 case presentations, serving as an atlas of disorders that result in exercise limitation. Detailed practical information is provided in the appendices to assist readers in setting up a laboratory, in testing subjects, and in making necessary calculations.