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The results showed that a full 17 percent of African American test subjects had a case of obstructive sleep apnea present, compared to 8 percent of the Caucasian subjects. This denotes a hypothesis that African Americans stand an increased risk of obstructive sleep apnea.
Other Sections. Obstructive sleep apnea is a sleep disorder in which breathing is briefly and repeatedly interrupted during sleep. The apnea in sleep apnea refers to a breathing pause that lasts at least ten seconds. Obstructive sleep apnea occurs when the muscles in the back of the throat fail to keep the airway open, despite efforts to breathe. Another form of sleep apnea is central sleep apnea, in which the brain fails to properly control breathing during sleep.