Fundamentals of Movement

Balance Balance is the ability to sustain or return the body's center of mass (CM) or line of gravity (L(;) over its base of support (BS). The term bal, II1C(, is often used synonymously with the term stability. However, stability is actually a measurement of balance. When the complete scope of balance is considered, the closer the CM/LG is in relation to the BS, the more stable a person is. Conversely, the further the CM/LG is from the BS, the more unstable a person is. Babnce is usually described in two forms: static (motionless) and dynamic (mobile), Static balance can be demonstrated by a stationary position such as standing on one foot, both feet or in a recumbent position. Essentially, static balance is the ability to maintain the CM/LG within a re'latively constant state over the BS. Dynamic balance is the ability to repeatedly alter the CM/LG over the BS to perform a movement. You see this in everyday activities such as walking, running, jumping, bending and reaching, as well as in sports. Achieving dynamic balance is a vital component for skillful movement and proper coordinatiol1. It's an essential part of any exercise program with the goal of improving movement.