Strength training may be defined as engaging in activities that take increasing muscular strength as their primary focus and benefit. Examples include pull-ups, push-ups, and many acrobatic movements and other specific 'moves' that train many muscle groups at once. Sprinting at top speed is a great way to improve cardiac output (how much blood the heart can put out), and it is also a great way to increase the strength of the major leg muscles.
Strength training can improve one's ability to perform certain movement sequences, including dance and sport movements, as well as defending oneself from the ground in a fall. One can also increase the speed of reflexes and reactions required to adequately protect oneself. Additional benefits of this type of training include increasing bone density, which is a key in preventing osteoporosis.
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