There are different terms which describe the concept of core stability but all refer to the muscular control used to maintain stability around the lumbar spine and pelvis.
There are many components to core stability while each playing its own part to stabilize the region. The strength of the muscles is not so much important as their ability to activate during specific movement sequences to stabilize the low back and pelvis giving a stable base from which force can be generated through the limbs to run, jump, kick etc.
There are two types of muscles which are used when stabilising the lumbar spine and pelvis. The first type is local postural muscles, which are the deeper muscles in the area and are known as the core muscles. The global dynamic muscles are the large torque producing muscles which ling the pelvis to the thoracic cage and provide a more general stabilization to the area along with trunk movement. Overuse of these muscles can decrease the function of the local postural muscles.
Improved core stability also provides a more stable base for the joints around the lumbar spine and pelvis such as the hip thus reducing the strain on the muscles moving those joints.
The more stable the base the more power that can be generated.
Efficient movement is a constant give and take between mobility and stability, with each segment of the body and its unique movement capabilities influencing all the other segments. When mobility and stability are in balance, and all segments are synchronized, movement is graceful and potentially powerful.
Poor core stability, a frequent feature in children with motor coordination difficulties, can make maintaining an ideal posture difficult.
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