Describes the possible causes of delayed-onset muscle soreness (DOMS), which include buildup of lactic acid in muscle, increased intracellular calcium concentration, increased intramuscular inflammation, and muscle fiber and connective tissue damage. Proposed methods to reduce DOMS include warming up before exercise and performing repeated bouts…

Characteristics of an effective strength training program are analyzed and descriptions are offered of different kinds of weight training activities. Comparisons are made between concentric, isometric, eccentric, and isokinetic training methods. The fundamentals and techniques of an exemplary training program are outlined and the organization and…

Postural deviations resulting from strength and flexibility imbalances include swayback, scoliosis, and rounded shoulders. Screening tests are one method for identifying strength problems. Tests for the evaluation of postural problems are described, and exercises are presented for the strengthening of muscles. (JN)

Although exercise and physical fitness programs for youth are required curriculum in most schools, the sport coach may not be properly trained in the physiological development of children. Some general guidelines are suggested for planning strength and flexibility exercises for youth in sports. (JN)

The Department of Health and Human Services, working with other governmental agencies, professional groups, and individuals, has identified general areas of concern for the nation's health. This report explains how physical activity and fitness have been prominent aspects of Healthy People 2010 (HP2010), the national health promotion and disease…