A new study in the Dec. 15 issue of the Journal of Clinical Sleep Medicine suggests that middle-aged men with obstructive sleep apnea (OSA) can improve their golf score by using CPAP therapy. Results show that participants treated with continuous positive airway pressure therapy lowered their handicap index by 11 percent, and the more skilled golfers dropped their handicap by 31.5 percent.  This improvement was attributed to better endurance, concentration and decision making produced by effective treatment.