Figure 2From: Upper airway dynamics during negative expiratory pressure in apneic and non-apneic awake snorersIndividual values of V,NEP 0.5 in seated and supine position at two NEP levels in patients with obstructive sleep apnea-hypopnea (OSAH) (circles, white for mild-to-moderate OSAH and black for severe OSAH), snorers (Sn) (triangles) and controls (C) (squares). *p<0.01 vs C; **p<0.001 vs C; #p<0.05 vs Sn.Back to article page