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Muscular Hematoma

During physical activity there is a substantial redistribution of blood flow. In the muscles, it increases from about 0.8 litres per minute (1.7 US pints/min) (15% of cardiac output) at rest to at least 181/min (38 pt/min) (72% of cardiac output) during strenuous effort. It follows that the blood supply to the muscles during sporting activity is enormous; the extent of bleeding when the muscle is damaged is directly proportional to muscle blood flow and inversely proportional to muscle tension at the time of injury. The effect of an injury depends upon its location and extent rather than upon its cause, and in the following paragraphs no distinction is made between contusion and distraction ruptures. Treatment, healing, and rehabilitation also vary according to the type, location, and extent of hemorrhage and ruptured tissue.

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