Physical activity, especially high exercise, tends to manifest heart disease. This makes the risk of cardiac arrest particularly high during sports. Studies show that 90% of sudden cardiac arrests in young athletes occur during or immediately after exercise.
This runs against the popular belief that anyone who is young with an active lifestyle is exempt from such a health condition. In fact, sudden cardiac arrest (SCA) occurs three times more often in athletes than non-athletes.
In general, sudden cardiac arrests that happen outside of hospitals only have a 12% survival rate, accounting for approximaely 22,000 annual deaths in Australia. That is why it is crucial for places like sporting clubs to have portable defibrillators or AEDs (automated external defibrillators) always on the ready.
Bystander action involving quick administration of CPR (cardiopulmonary resuscitation) within 3-5 minutes after collapse, coupled with the use of an AED, vastly increases the chance of survival for the affected individual — from 6% up to 74%.