This mini ball is an effective resistance and strengthening tool for seniors. Ideal for those with arthritis in their hands and fingers. The Active-X Ball emphasizes coordination and neuro-muscular function and can be used for rehabilitation. This mini ball emphasizes coordination and neuro-muscular function. Squeeze the ball by contracting the muscles. It's an effective resistance and strengthening tool that can be used for rehabilitation, to improve strength, and to support maintenance of bone density. Incorporate multi-planar movements to achieve full range of motion.