A
medicine ball (also known as an
exercise ball, a
med ball, or a
fitness ball) is a weighted
ball roughly the diameter of the shoulders (approx. 13.7 inches), often used for
rehabilitation and
strength training.[SUP]
[1][/SUP] The medicine ball also serves an important role in the field of
sports medicine. However, it should not be confused with the larger, inflated
exercise ball.
Medicine balls are usually sold as 2–25 lb (1–11 kg) balls and are used effectively in
plyometric weight training to increase explosive power in athletes in all sports. Some medicine balls are up to 14" wide and up to 14 lbs weight, or in the form of weighted
basketballs. Modern exercise balls are larger, up to 36" diameter.
Hippocrates is said to have stuffed animal skins for patients to toss for “medicinal” purposes.[SUP]
[2][/SUP] Persia in 1705 used similar large balls. The term "medicine ball" dates back to at least 1876, in
American Gymnasia and Academic Record, where Robert J. Roberts claims to have originated the name, after a story of a sick king who was cured by rolling a large ball filled with herbs (reprinted in
Good Health, vol. 51, 1916), or 1894, in
Education by Plays and Games, or 1895[SUP]
[3][/SUP] when the term "medicine" was synonymous with health as in the "art dealing with the maintenance of health". United States President Herbert Hoover was an avid user of medicine balls; this gave rise to the term
Medicine Ball Cabinet.