WEIGHT TRAINING

system of physical conditioning using such weights as barbells and dumbbells and other devices, including Nautilus machines. It is a training system rather than a competitive sport such as weight lifting or power lifting. Weight training is used both for physical rehabilitation and for athletic and general conditioning. Athletes use it to improve their performance by increasing strength and endurance. It is used extensively by track-and-field athletes, swimmers, football players, and soccer players, as well as by other sportsmen for whom basic strength is important to their training program. Weight training also is used to promote general physical fitness and conditioning and to develop the musculature for physique and body-building contests. In rehabilitation after an illness, injury, or long confinement, weight training is commonly referred to as progressive resistance exercise, and it is usually undertaken at the direction of a physician. Generally, the type and number of exercises vary with the practitioner's objectives, age, sex, weight, and experience. Because of this, weight training is best performed under the direction of an experienced coach or physical therapist.