Plyometric exercises or drills combine speed and strength to produce an explosive-reactive movement or increased power. Some world-class athletes have used plyometric-training in sports such as high-jumping, hurdles, football, baseball, and hockey. The method is still considered experimental. Sample exercises are described. (JL)

A review of literature on the incidence and nature of injuries to young athletes is presented on the topics of: (1) physiological characteristics of preadolescents, adolescents, and young adults; (2) musculo-skeletal changes in the growing athlete; (3) epiphyseal injuries and their potential for resulting in temporary or permanent impairment; (4)…