Functions: Developing the strength of lower limbs, and improving the stability and agility of three main joints of lower limbs; good for the healing of inconvenience of bending and stretching of lower limbs, and muscular atrophy of lower limbs, rheumatoid arthritis, sciatica, sprain of the anklebone, ect. Approaches: Sit on the chair and step on the footboard. Stretch legs with force and recover slowly. Repeat Specification(mm):850x1700
