The gym ball or Swiss ball was coined because of one of the earliest recorded uses of an exercise ball in Switzerland in 1965, where a group of physical therapists used it in their work with children with cerebral palsy. An exercise ball may also be referred to as:
* Gymnic ball or gym ball
* Stability ball
* Ball therapy
* Ball physio
* Blue balls (because many are blue).
Exercise ball sizes vary. Physical therapists and sports coaches recommend using an exercise ball appropriate for each person's height and leg length, with the hips and knees at or slightly greater than a 90 degree angle (thighs parallel to the ground or slightly down) with feet flat on the ground. floor . It is best to work with a physical therapist, exercise physiologist, or other spine specialist for fit before using or purchasing an exercise ball.
Exercise balls can be inflatable, made of vinyl or dense plastic or foam rubber. Inflatable practice balls can be punctured, so it's best to avoid wearing sharp objects (such as jewelry or a belt) when using the ball. Exercise balls made of plastic can be damaged if exposed to excess heat or sunlight. Certain manufacturers claim a design that stops the exercise ball from exploding in the event of a puncture, allowing air to slowly leak out.
One factor in choosing an exercise ball is its durability and ability to maintain its shape under pressure. The manufacturer must provide the retailer with a test load figure for how much weight the exercise ball can hold.
Inflatable exercise balls can be sold deflated, requiring an air pump to fill them. Often pumps can be purchased with an exercise ball. The manufacturer's instructions regarding air pressure and fill level must be followed. One of the benefits that many people appreciate about exercise balls over many other types of exercise equipment is that they are portable. When traveling, a deflated ball can be placed in a suitcase and inflated when it arrives (using either a lung or a small hand pump).