For unknown reasons, 5-10 percent of people louis vuitton luggage who experience a concussion have symptoms that persist beyond six weeks. These persons are diagnosed with PCS. Previously there was no treatment for the condition with proven success.

The UB regimen is based on the hypothesis that the regulatory system responsible for maintaining cerebral blood flow, which may be dysfunctional in people with a concussion, can be restored to normal by controlled, graded, symptom-free exercise.

The researchers developed their program in 2004. "We were testing athletes for return to sport using an exercise test," says Willer, "and we decided that if an athlete becomes symptomatic at a heart rate of, say, 140, maybe they could exercise at a heart rate of 125, without complications. We soon discovered that the athletes got better much quicker if they exercised."

Physicians in UB's Sports Medicine Concussion Clinic initially used their approach only with athletes from UB teams, but word spread, and they now have assessed and treated many professional athletes, especially those from the National Hockey League louis vuitton shoes.