Figure 6. Glutathione and protein thiol levels in response to a demanding protocol of repeated isometric contractions.

Data are shown for: A, glutathione and B, protein thiol levels in quiescent gastrocnemius (GTN) muscles and GTN muscles immediately following exposure to isometric contractions for mice that either had (grey bars, Exer) or had not (black bars, Sed) been subjected to 8 weeks of treadmill running exercise. All bars are means with standard error bars. Significant differences (P < 0.05) are indicated by asterisks.