Neurology Medicine

- Efforts; are associated with increased risk of back pain. This association may be due to an overload mechanism, and may be associated with an increased risk if efforts are made in positions of flexion and extension or rotation: An intense effort can cause back pain.

If the muscles are very powerful, is injured before the intervertebral disc. In this case the pain caused by muscle injury, painful but benign and usually resolves itself in a few days, avoiding the effort to maintain and protect the intervertebral disc.

If the muscle is not strong enough, the intervertebral disc may be injured while the muscles. It is possible that the continuous repetition of efforts, though not terribly severe, can cause back pain, probably by the accumulation of small lesions in the intervertebral disc, facet joint or, more commonly, repeated overloading of the musculature.

Excessive strain does not always mean load weight: the adoption of awkward postures can overload the muscles or structures of the spine.

If the positions remain inadequate enough time or frequently recurring back pain can cause an overload mechanism is loaded but not weight. It is true that a particularly intense exertion and carried out without taking into account the postural hygiene, especially if it occurs in a movement of flexion and extension, can trigger a painful episode. However, this process typically does not make it normal.

Most commonly, back pain episodes occur without the effort has caused. Epidemiological studies show that back pain is more frequent among those who perform repeated intense efforts, especially if they are in positions of bending, twisting or rotation of the spine, or in cases where the muscle is insufficient.

- Vibration; is associated with increased risk of back pain. Epidemiological studies show that the vibration affecting the whole body increases the risk of back pain appear. That is the case, for example, tractors and machinery to handle this type.

Vibration is likely to trigger the pain of these mechanisms: Vibration entails rapid shortening and lengthening the muscles, which could facilitate its contracture. The vibration increases rapidly cyclic load on the intervertebral disc and facet joint. The vibration causes direct activation of pain nerves in the spinal ganglia.

- Lack of power, resistance training or back muscles, is associated with an increased risk of back pain and that pain will recur or become chronic. Studies have confirmed that back pain comes on more easily and persist longer in people who do not have a sufficiently powerful muscles, strong and trained.

Probably, this fact is explained by several mechanisms: If the muscles are strong and harmonious, the load distribution is correct and decreases the risk of contractures or muscle overload. The greater the power and muscular endurance, the greater the structural strength to the load.

Normally, the muscles begin to ache before the other structures of the back, so that warning of possible injury. If the muscle is very powerful, this mechanism does not work effectively. Normally, the muscles reports the position in space. When the muscle is poorly trained that source of information is faulty, so adopting bad posture without being conscious of it.

Source: www.espalda.org/divulgativa/dolor/causas/factores.asp
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