Figure 1: Effect of chronic intermittent hypobaric hypoxia on serum inflammatory cytokines in rats. (a) Serum levels of IL-1β. (b) Serum levels of IL-6. (c) Serum levels of TNF-α. Values were mean ± SEM, n = 6 in each group. *P < 0.05, **P < 0.01 versus CON; #P < 0.05, ##P < 0.01 versus MS. MS: Metabolic syndrome; CON: Control.