What Is a Racquetball Made of?
Colorful rubber balls isolated on white (with clipping path) image by Marek Kosmal from Fotolia.com
Racquetball is a racquet-based sport played in an enclosed room. The racquets used are smaller than tennis racquets, and the ball used is smaller, too. But what is it made out of?
Joe Sobek invented racquetball (originally called paddleball, then paddle rackets) in 1950. A problem he encountered was that the ball was too fast. He found his solution in an ordinary children's rubber ball, buying a large quantity to keep the sport going until a company was found that would manufacture hollow rubber balls.
USA Racquetball rules state that standard racquetballs are approximately 1.4 ounces and 2.25 inches in diameter. Even the hardness (55-60 inches durometer) is specified, the rules going so far as to say the ball must "bounce 68-72 inches from a 100-inch drop at a temperature of 70-74 degrees Fahrenheit." However, nowhere is it explicitly stated the substance of which the ball must be made.
The Center for Disease and Control Prevention recommends squeezing a racquetball as part of a strength-training plan. It can help prevent arthritis, rehabilitate fingers, and prevent elbow pain and inflammation.
Jason Idalski has been writing since 2006. He has worked professionally for three Michigan newspapers, including "Grand Rapids Press," "Battle Creek Enquirer" and "Lansing State Journal," and as the editor-in-chief of "emYOU! The Magazine," a monthly magazine. Idalski graduated with a Bachelor of Science from Eastern Michigan University with a triple major in journalism, mathematics and economics.