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. 2016 Sep 23;594(23):6987–7004. doi: 10.1113/JP272409

Figure 4. Peak ROV increases with contraction duration and branch order but is diminished with advanced age .

Figure 4

Following each contraction duration at 100 Hz, peak vasodilatation expressed as diameter change (μm, left panels) was similar across branch orders while relative responses (% max, right panels) increased with branch order (FA<1A<2A<3A). Both absolute and relative peak ROV increased with contraction duration for all branch orders in both age groups, but peak ROV was diminished consistently in all branch orders for old mice compared to young mice, with the greatest effect of ageing in FA. Δ P < 0.05, main effect of branch order; # P < 0.05, main effect of age, * P < 0.05, old vs. young within respective branch order. Summary data are means ± SEM, n = 6 per age group.