Movement represents the integrated functioning of three main systems within the human body, the nervous system (central and peripheral), the skeletal (articular) system, and the muscular system. These collective components and structures represent the human movement system (HMS).
Although separate in structure and function, the HMS relies on a collaborative effort to form interdependent links that form a functional kinetic chain. For example, your arm, shoulder, and spine are interconnected segments that function together to perform the movement. If any part of the kinetic chain is injured or not functioning properly, the entire link is compromised, resulting in less than optimal performance. Body segments and their movements must be coordinated to allow for the efficient transfer of energy and power throughout the body, when moving from one body segment to the next.
Kinesiology is a study of motion or human movement and biomechanics is the application of mechanical physics to human motion. Structural kinesiology is the study of muscles as they are involved in the science of movement. Both skeletal & muscular structures are involved. Bones are different sizes & shapes – particularly at the joints, which allow or limit movement. Muscles vary greatly in size, shape, & structure from one part of body to another. More than 600 muscles are found in the human body.