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Monday, August 15, 2016

Human Posture pattern.


The concept of human posture has different meanings to different persons:
·         To the orthopedic surgeon, it may be an indication of the soundness of the musculoskeletal system.
·         To the Kinesiologist, it is a measure of mechanical efficiency of muscles, balance and of neuromuscular coordination.
·         It is considered as the relative arrangement of parts of the body. It changes with the positions and movements of the body throughout life and throughout the day.
·         It is the attitude which is assumed by body parts to maintain stability and balance with minimum effort and least strain during supportive and non supportive positions.

Definition of  a “ Good Posture”:
·         A good posture is the state of muscular and skeletal balance which protects the supporting structures of the body against injury and progressive deformities, irrespective of the attitude in which these structures are working or resting.
·         Under these conditions, the muscles will function most efficiently and the optimum positions are afforded for the thoracic and abdominal organs.
·         There is no single best posture for all individuals. Each person must take the body he / she has and make the best of it. The “ good Posture” is the one that suits one’s own condition and the condition of the environment.
·         e.g. during attention. The normal posture will be erect, while in extreme fatigue, the normal posture will be that conserves energy.
·         The “good posture” is the posture in which the body segments are balanced in the position of least strain and maximum support.

Postural Control:
·         Postural control refers to the ability to maintain the stability of the body as a whole and body segments “against gravity” or  “movement of different body segments” or “changes in the supporting surface”.
·         Control depends on the integrity of nervous system, muculoskeletal system and special senses.

Types of Postures

Easy Posture

·         It is a good, symmetrical and balanced position though this position cannot be maintained for a long time.
·         The subject will therefore shift his weight in a swaying movement in order to prevent fatigue and to maintain a good circulation in the postural muscles of the legs when standing.
·         By alternating the main support from one leg to another, the muscles become periodically unloaded and relaxed.
·         The pelvic inclination is about 60°.

Fatigue Posture

·         It is asymmetrical or sagging posture. This position s relaxed and can be maintained for a long time as most of the body’s joints are in semi- flexion.
·         The load on the muscles will decrease and the energy expenditure is 10 % less than easy posture.
·         The pelvic inclination decreases due to posterior tilting of the pelvis.

Rigid Posture

·         It is called normal stellung posture or posture of attention. It doesn’t mean normal posture. This position cannot be assumed for a long time as most of body’s joints are in extension.
·         Therefore, the load will increase on the joints and muscles and the energy expenditure is 20% more than in the easy posture.
·         The pelvic inclination increases due to the anterior tilting of the pelvis.

Faulty Posture

·         Faulty relationship of the various body parts which produces increased strain on the supporting structures.
·         Inadequate balance over the base of support.
·         Postural deviations will occur with an increase or decrease of body curvatures and pelvic inclination.

Faulty posture leads to prolonged posture strain which causes

1.      Ligaments stretch which, if becoming permanent, will lead to joint instability increased faulty posture.
2.      Uneven pressure on joint cartilage which will cause abnormal friction, which in turn will lead to joint damage ,increased faulty posture.


    The conclusion to understand for Your Back is A healthy back has three natural curves: a slight forward curve in the neck (cervical curve), a slight backward curve in the upper back (thoracic curve), and a slight forward curve in the low back (lumbar curve). Good posture actually means keeping these three curves in balanced alignment , wallahuaklam.
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