Table 4.
Spinotrapezius muscle Po2mv resting baseline and kinetics parameters for control and EPI groups
| Control | EPI | |
|---|---|---|
| Po2mv(BL), mmHg | 33.2 ± 2.5 | 33.4 ± 2.6 |
| Δ1Po2mv, mmHg | 15.1 ± 1.1 | 14.4 ± 1.3 |
| Δ2Po2mv, mmHg | 4.5 ± 0.8 | 4.3 ± 0.9 |
| ΔtotalPo2mv, mmHg | 18.2 ± 1.9 | 19.4 ± 3.2 |
| Po2mv(steady state), mmHg | 21.3 ± 2.0 | 20.0 ± 2.8 |
| TD1, s | 7.9 ± 1.3 | 7.8 ± 1.1 |
| TD2, s | 41.1 ± 3.6 | 57.3 ± 11.4 |
| τ1, s | 17.4 ± 2.6 | 14.0 ± 3.2 |
| τ2, s | 53.0 ± 12.3 | 41.0 ± 7.5 |
| MRT1, s | 25.2 ± 2.8 | 22.0 ± 2.2 |
Values are means ± SE; control, n = 7 of 10; and EPI, n = 7 of 10. Where second component model averages are shown, the value reflects only those rats where a two-component model was applied to describe the microvascular O2 pressure (Po2mv) data. Po2mv(BL), precontracting Po2mv; Δ1Po2mv, amplitude of the first component; Δ2Po2mv, amplitude of the second component; ΔtotalPo2mv, overall amplitude regardless of one- or two-component model fit; Po2mv(steady-state), contracting steady-state Po2mv; TD1, time delay for the first component; TD2, time delay for the second component; τ1, time constant for the first component; τ2, time constant for the second component; MRT1, mean response time describing the kinetics response of the primary component. There were no differences between control and EPI for any kinetics parameter.