CPAP and blood sugar levels in Prediabetes

Prediabetes is a condition in which blood sugar levels are elevated above normal, but not high enough to meet criteria for diabetes. Here is a study that measured blood sugar levels (and other parameters) during two weeks of CPAP use versus an oral placebo in patients diagnosed with obstructive sleep apnea. I only have access to the abstract and an article about the study. In this study, researchers ensured that those randomized to CPAP used it for 8 hours a night for two weeks straight. The results showed that the CPAP users had lower blood sugar levels as the main outcome. A secondary outcome measure showed lower blood pressure levels in the CPAP users when compared to the controls.