Figure 5. Human umbilical vein endothelial cell NO production (A), phosphorylated endothelial NO synthase (p‐eNOS^ser1177) abundance (B), and reactive oxygen species (ROS) activity (C), following a 24‐hour incubation with serum from subjects, with example fluorescent images below ROS activity and NO production.

Data are mean±SEM. *P<0.05 vs baseline. ^† P<0.05 vs sham. IMST indicates inspiratory muscle strength training.