This text provides the latest information on health screening, physical fitness, clinical testing and procedures for affecting health behaviour. It also includes the certification knowledge, skills and abilities that must be met by candidates for each of ACSM's certification levels. This edition contains: expanded coverage of healthy adults, including standard fitness tests with normative data; greater detail on healthy "special populations" such as children, pregnant women and the elderly; testing and prescription information for pulmonary patients; quantitative, tabular data - threshold values, clinical lab cutoffs considered abnormal, normative fitness data, useful monograms, and more; expanded treatment of environmental considerations; appendices on ECG interpretation and metabolic calculations.