Fig. 1. Basal and post-stressed parameters related to the NO production were measured in muscle tissue of mice immediately and after 24 h of the recovery period. The three groups were the control (white columns), hyperbaric oxygen preconditioning (HBOP, black columns), and hyperbaric oxygen session after the stress event (HBOA, grey columns). Subgroups: B, basal; F, fasting (mild stress); E, prolonged exercise (hard stress). B24, F24, and E24: corresponding recovery subgroups. Values are expressed as the mean ± SD. NO, nitric oxide; NOS, nitric oxide synthase; iNOS, inducible NOS; eNOS, endothelial NOS; nNOS, neuronal NOS; BH₄, tetrahydrobiopterin; 3NT, 3-nitrotyrosine. *p < 0.05 and **p < 0.01 compared to the corresponding control inside each subgroup. ^&p < 0.05 and ^&&p < 0.01 compared to the other experimental group inside each subgroup.

Korean J Physiol Pharmacol 2023;27:9-20 https://doi.org/10.4196/kjpp.2023.27.1.9

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