The stability ball is designed to improve balance while targeting specific muscle groups. It has grown in popularity since its mainstream introduction in the late 1980s and early 1990s.
The stability ball can be adapted for many uses, including developing core strength, improving posture and facilitating stretching, among others. Its application is particularly widespread in the physical therapy industry, where it was first put to use in the 1960s.
Running and cycling, focuses on the lower body. Not much attention is paid to the trunk, or core, of the body. It is the muscles of the core—the abdomen, chest and back—that stabilize the rest of the body.
It is important when you are strengthening the core that you create balance between the muscles of the abdomen and the back. Many people will naturally have an imbalance between the strength of their abdominal muscles and the lower-back muscles. Exercising with stability balls helps to develop and strengthen those muscles.
Besides providing balance training, stability balls work the trunk in almost every exercise that is performed. By concentrating on the abdominal section, your posture will improve and you will find that you are generally more balanced and aware of your body movements. Your core will be more prepared to support the rest of your body in whatever activity you choose to do.
It is important to buy the right size ball and maintain the proper air pressure. The firmer the ball, the more difficult the exercise will be. The softer the ball, the less difficult the exercise will be.
If you are just beginning to exercise, are overweight, or you are generally deconditioned, you may want to consider using a larger, softer ball. When sitting on the ball, your knees and hips should align at a 90-degree angle.
Stop by the gym, and I can show you the exercises that can be performed on the stability ball.