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Levitra (Vardenafil)

Other names: Vitra, Vardenafil, Auvitra, Solvetra
The factors responsible for sports injuries determine in part the types of injuries that occur. In addition to the dangers of the sport itself, the level of fitness of competitors, his or her flexibility and agility, the hardness of the playing and training surfaces (whether on any particular occasion a playing field is wet or a track or ring slippery) all make a difference to the types of injuries athletes suffer. The quality of protective gear and whether it is worn properly can influence both the type of injury incurred and its severity. It is well worth noting that competent coaching and refereeing may also contribute significantly to the number of sporting injuries sustained by competitors.
Appreciation of these factors makes it easy to understand why sporting injuries are traditionally classified into three categories:
Direct injuries;
Indirect injuries; and
Overuse injuries.
Direct injury refers to those injuries which result from external forces, such as contact with an opponent or some piece of equipment peculiar to the game (e.g. a cricket ball or bat, etc.). Fractures or bone breaks represent the most dramatic kind of direct injury, varying in severity and in kind from simple to compound and those in which the skin is broken to those in which it remains intact.
The familiar example of a common direct injury is the ‘corked thigh’, often referred to medically as intramuscular haematoma, a condition of bruising which results when a competitor is directly struck in the thigh by, say, the knee of an opponent. In such cases, the severity of the injury will be determined by the force or energy of the blow and the inherent or acquired capacity of the relevant part of the athlete’s body in withstanding its force.
The extent to which an athlete is aware of the impending blow may serve also to reduce the risk of injury by affording the athlete an opportunity to maximise the appropriate protective response of that part of the body receiving the blow.
This point is of special relevance in those cases in which an athlete collides with a stationary object such as a goalpost, railing or wall. Even momentary recognition that a collision with a stationary object is about to occur affords athletes the opportunity to prepare themselves in any way they are able to accommodate the impending blow.
The second common type of sporting injury is traditionally classified under the category of indirect injury or an injury resulting from internal rather than external forces acting on joints, tendons, ligaments and muscles.
Indirect injuries are essentially soft-tissue injuries and are incurred when muscles, ligaments and tendons are overstretched, or joints sprained or dislocated. Soft-tissue injuries are the most common type of injury experienced by athletes and include tendon ruptures, torn cartilages or ligament tears, as in the case of a sprained ankle.
In the case of soft-tissue injuries, the blood vessels in the areas of damage tend to leak, thus causing swelling and bruising. Reducing the extent of the haemorrhage becomes a matter of vital importance, as the length of time the injury takes to heal will be determined partly by how much blood accumulates in the area.
The third category of sports injuries are classed as overuse injuries. This type of injury results from the repetitive use of certain muscles, bones and tendons, an example of which is marathon running.
It is worth noting that those athletes who run 25 kilometres each week place a phenomenal repetitive stress on the knees, ankles and feet. Because the stress to these areas is so great, even a relatively minor injury may become grossly magnified by faulty running techniques, just as an otherwise minor aberration in the structure of the foot or ankle may be magnified under the microscope of constant repetition and transformed into the source of a major overuse injury. It has been estimated that, over the course of a year, athletes who run 25 kilometres every week will have subjected each foot to approximately 250 000 foot strikes against some surface or other, many of which are not well suited to the anatomy of the foot anyway.
Examples of overuse injury include inflammation of the Achilles tendon, swimmer’s shoulder, tennis elbow, knee problems and stress fractures to the feet or legs.
Any tendons associated with constant repetition are also especially vulnerable to injury in that their blood supply deteriorates with age and is, in any event, generally poor. Overuse injuries are particularly common when athletes have had a break in training and return to a highly repetitive activity which at the time involves a sudden and unaccustomed repetitive use of bones or connective tissue such as ligaments and tendons.
According to the ACHPER publication referred to above, Australian Rules football displays the highest number of injuries to the knee, but the highest proportion of total knee injuries is to be found in netball, where the highly repetitive stop-and-start moves, played out on a hard surface, wreak havoc with the knees.

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