Obstructive sleep apnea is associated with impaired exercise capacity, which is an indicator of increased cardiovascular risk, a new study shows. Results show that the predicted peak oxygen uptake, a measure of aerobic physical fitness, was significantly lower in people with moderate to severe obstructive sleep apnea than in controls. Further analysis found that sleep apnea severity alone explained 16.1 percent of this variability.

Source: Sleep apnea linked to impaired exercise capacity