Fig. 2.

HIIT after MI exerts cardioprotective effects via attenuation of oxidative stress. a GSH content was significantly decreased in MI-CTL compared with sham, HIIT and Baseline (***P < 0.001). HIIT significantly restored GSH content (#P < 0.05 compared with MI-CTL; $P < 0.05 compared with sham; ** P < 0.01 compared with Baseline). b Significant decreased activity of SOD was found in Baseline and MI-CTL (* P < 0.05 and $$ P < 0.01 compared with sham; ** P < 0.01 and $$$ P < 0.001compared with HIIT). HIIT treatment significantly restored SOD activity compared with MI-CTL (#P < 0.05). c The levels of MDA in heart were significantly elevated in Baseline and MI-CTL compared with sham and HIIT (*** P < 0.001). Significant reduced MDA level was observed after treatment with HIIT (# P < 0.05 compared Baseline; ## P < 0.01 compared with MI-CTL; $$ P < 0.01 compared with sham and HIIT