Robertson's (U. of Pittsburgh) visual rating scale, developed first for children and refined for adults, helps fitness specialists, personal trainers, strength and conditioning coaches, clinical exercise physiologists, and allied health professionals help their clients rate their efforts in order to accurately regulate their conditioning intensity. The 11 picture scales apply to all kinds of exercise. The guide includes sample instructions for what to say to clients in various situations; clinical and field-based perceptual tests for use in aerobic, anaerobic, and resistance exercise assessments; case studies that present a need and an action plan; and training programs that employ Robertson's picture system to guide exercise intensity. Annotation ©2004 Book News, Inc., Portland, OR (booknews.com)