Due to Low back injury,muscle strains occur:
A low back sprain or strain can happen suddenly,or can develop slowly over time from repetitive movements.

COMPARISON BETWEEN MUSCLE STRAIN AND SPRAIN:
*Strains occur when a muscle is stretched too far and tears,damaging the muscle itself.
*Sprains happen when over-stretching and tearing affects ligaments, which connect the bones together.

~Common causes of sprain and strain include:
*Lifting a heavy object,or twisting the spine while lifting
*Sudden movements that place too much stress on the low back,such as a fall.
*Poor posture over time
Sports injuries,especially in sports that involve twisting or large forces of impact.
While sprains and strains do not sound serious and do not typically cause long-lasting pain,the acute pain can be quite severe.

TREATMENT FOR MUSCLE STRAIN:
Following are the treatment options to treat your muscle strain:
1.Cold therapy:
It means apply ice 20 mins every hour.
2.Compression:
It can be apply by gentle elastic bandage.
3.Massage:
Massage the affected area gently.
4.Heat therapy:
It can be effective method as it increases blood flow and improved circulation helps with muscular spasms throughout the body.
5.Physical therapy:
In this we do RICE which means Rest,Ice,Compression and Elevation.
6.Pain medication:
Pain killers are effective for sometime but physical therapy is more effective.

By,this treatment options we can help regain muscle elasticity and blood flow can be normal.