Read more1Preventing Shallow Water Blackout, A Leading Cause of In-Water Death Among Competitive Swimmers16 September 2014JACKSONVILLE, Florida, September 16. SHALLOW water blackout, brought on by hypoxic training and pushing the boundaries of one’s breath-holding abilities, is one of the top causes of in-water death for competitive swimmers. Coaches, swimmers and parents are often not aware of the warning signs of imp...