Figure 5. Exercise capacity and muscle oxidative function young normal chow (YNC), old normal chow (ONC), young Endocalyx™ treatment (YEC), and old Endocalyx™ treatment (OEC) mice. (A) Running time to exhaustion during maximal treadmill test at Week 0 and Week 10. (B) Work performed during maximal treadmill test at Week 0 and Week 10. (C) Gastrocnemius muscle citrate synthase activity. Data are presented as mean ± SEM. *P < 0.05 vs. YNC; †P < 0.05 vs. ONC; ‡P < 0.05 vs. YEC; §P < 0.05 vs. Week 0. N = 7–13/group.