Fig. 2.

Plasma F2-isoprostane responses to the I/R trial with preceding exercise (IRX; black triangles, solid line) and the control I/R trial (IRC; open squares, dotted line). Values are means ± SEM. The black line above the x-axis denotes the time of forearm ischemia/reperfusion. The asterisk denotes a significant difference between trials. a Young adults (n = 8): there was a significantly lower response to IRX compared to IRC (P = 0.015). b Older adults (n = 9): the responses were not different between IRX and IRC (P = 0.226)