Muscle strains, which are injuries caused by sharp contractions or excessive stretching of muscles during exercise. This is prone to occur during long, pull-ups and sit-up exercises. After a muscle strain, the strained area is in severe pain and can be felt by hand as a hard mass of muscle tension, with significant tenderness, local swelling or subcutaneous bleeding, and significant restriction of activity. Immediately after the muscle strain, cold treatment with cold water to flush the local or wrapped in a towel ice decision cold compress, and then wrapped with a bandage appropriate force injury site to prevent swelling. In the relaxation of the injured part of the muscle and elevate the injured limb at the same time, you can take some pain, hemostatic drugs. 24 hours to 48 hours after the removal of the bandage. Depending on the condition of the injury, a blood-activating and anti-swelling ointment can be applied externally, and appropriate hot compresses or lighter techniques can be used to massage the injured area. Basic information Injuries caused by sharp contraction or excessive stretching of muscles during exercise. If the muscle strain is serious, such as pulling the muscle belly or tendon off, you should take the time to go to the hospital for surgical suturing. A microscopic muscle injury, partial muscle tear or complete rupture caused by an active and strong muscle contraction or passive and excessive stretching is called a muscle strain. This is one of the most common sports injuries. Causes and principles in sports, due to improper preparation activities, the physiological function of a muscle has not yet reached the state required to adapt to the movement; training level is not muscle strain after cold enough, muscle elasticity and strength is poor; fatigue or overload, so that the muscle function decreases, the strength is weakened, coordination is reduced; wrong technical action or sports when attention is not focused, the action is too violent or rough; the temperature is too low humidity is too Large, poor quality of the field or equipment can cause muscle strain. In the completion of various actions, muscle active violent contraction more than the burden of the muscle itself; or sudden passive overstretching, more than its stretch, can occur strain. Such as weightlifting bending over to grab the barbell, the vertical spine muscle due to strong contraction and strain; in doing exercises such as front leg press, longitudinal splits, sudden excessive force, can make the thighs after the group of muscles excessive passive elongation and injury; horizontal splits exercise can make the inner thighs group of meat excessive passive elongation and strain. In sports, strains of the posterior thigh muscles are the most common, and the thigh adductors, lumbar back muscles, rectus abdominis, calf triceps, and upper arm muscles are all susceptible sites for muscle strains. Signs, local pain, pressure pain; swelling, muscle tension, stiffness, spasm; functional impairment. The pain increases when the injured muscle is actively contracted or passively stretched; the muscle contraction resistance test is positive, i.e., the pain increases or a broken depression appears. Some injuries have a tear-like sensation at the time of injury, swelling is obvious and subcutaneous bruising is severe, and those who have a local depression or see an abnormal bulge at one end when touched may have a muscle rupture. Treatment In cases of mild muscle fiber strain and muscle spasm, acupuncture therapy will achieve significant results. For partial rupture of muscle fibers, cold compresses and pressure bandages should be applied early, and the affected limb should be placed in a position that relaxes the injured muscle to relieve pain. 48 hours later, massage should be started, and the technique should be gentle. If a muscle or tendon is suspected to be completely ruptured, it should be sent to the hospital immediately after local pressure bandaging and fixation of the affected limb to confirm the diagnosis and, if necessary, to receive surgery. Post-injury training Partial rupture, local stop training 2 to 3 days, the healthy limb and other parts can continue to move, and then gradually functional exercise, but should avoid repeating the muscle strain injury movements. 1 week later can gradually increase the muscle strength and flexibility exercises. In the stretching exercises to do not increase the pain of the injured part as degree. After about 10 to 15 days, the symptoms are basically eliminated, you can gradually carry out formal training. The injured part must be trained with a protective support belt and be adequately prepared for the activity. If the muscle or tendon is completely ruptured or avulsion fracture, the training should be stopped immediately, complete rest, active treatment, post-injury training and special training should be carried out under the guidance of a doctor.