Adrenergic Uptake Inhibitors 1 Cross-Over Studies 1 Double-Blind Method 1 Drug Therapy, Combination 1 Female 1 Humans 1 Male 1 Mandelic Acids 1 Middle Aged 1 Muscarinic Antagonists 1 OSA 1 Polysomnography 1 Reboxetine Severity of Illness Index 1 Sleep Apnea, Obstructive 1 Treatment Outcome 1 adrenergic receptor affecting agent 1 antimuscarinic and norepinephrine reuptake inhibitors 1 blood 1 combination drug therapy 1 controlled study 1 crossover procedure 1 double blind procedure 1 female 1 human 1 male 1 mandelic acid derivative 1 middle aged 1 muscarinic receptor blocking agent 1 oxybutynin 1