For people with a physical disability, activity is a lifestyle. It's something that can start in physical therapy, but it really is something that has to be carried over into their everyday lives. What has happened over the years is we're understanding the importance of mobility.
Spasticity is a condition of muscles that is a velocity resistance to stretch. What that means to a child and to a parent is that if you move the limb slowly, you have a difference than if you move that limb fast. Spasticity restricts movement and it creates a break on the system. It's as if they're trying to move, but they're held back. By treating spasticity, you may improve the range of motion or the action of the movement.
Early interventions for CP should be based on the strongest possible scientific evidence for benefit and should have the smallest possible risk of harm. In the US, early intervention (EI) is a system of services available under the age of 3, to support infants and toddlers with developmental problems and their families as they interact with and care for their child.