Figure 2.

Kinetics of DCF fluorescence in the control (PRE-Ex; A, C) and POST-Ex (B, D) myoblasts obtained from the skeletal muscle of the women that saw both decreased (A, B) and increased (C, D) ${\text{O}}_2^{•-}$ production, without and with addition of 100 nM H₂O₂ (as indicated). The H₂O₂ was added at 0 min in dedicated samples (+100 nM H₂O₂). Data came from three independent experiments. All of the ±H₂O₂ data points were significantly different (p ≤ 0.0001), except after 5 min ns, not significant.