The use of stability balls has increased significantly. Initially, stability balls were used primarily by individuals with low back problems in physical therapy clinics. However, stability balls are now more commonly used in orthopedic rehabilitation programs, with the physically active in fitness centers, in physical education classes and with special needs populations and the elderly. Many fitness and rehab facilities incorporate stability balls into their training programs, and the use of stability balls has expanded into sport conditioning programs.
The primary use of stability balls in these applications is the belief that an unstable surface will provide a greater challenge to the trunk muscles, increase dynamic balance, and possibly help to prevent injuries. Additionally, while a primary emphasis with stability balls has been and continues to be trunk training, it is now common to see stability balls used in conjunction with strength training for multiple muscle groups, not just the trunk.