Figure 7b. (a) Graph shows time dependence of the ratio (PCr)/(PCr + Pi) in ischemic legs (
) and in normal legs (
) 3 months after ischemia induction. Values are expressed as mean ± SEM for five rats. In each curve, the first point was acquired at rest. The second and third points were acquired at electrical stimulation of the muscle to induce an isometric contraction. The remaining four points were acquired during recovery. The marked (*) ratio (PCr)/(PCr + Pi) at 3 months was significantly different from the control (unpaired t test; P < .01). (b) Graph shows the mean values of the ratio (PCr)/(PCr + Pi) for six rats at 4 days (
, dotted line), 21 days (, dashed line) and 50 days (
, solid line) after ischemia induction. At the marked time (*), the values at 50 and 21 days were significantly different (paired t test; P < .05).