Figure 4. Concentrations (mean ± SD) of serum corticosterone (A), blood glucose (B), serum NEFA (C), and serum creatine kinase (D) immediately after exercise at different intensities based on MLSS protocol. *p < 0.05 in comparison with the control group; a in comparison with group 10 m/min; b in comparison with group 13 m/min; c in comparison with group 14.5 m/min; d in comparison with group 16 m/min.