Table 3.
Maximal force, velocity and power and curvature of the force–velocity relation in rat soleus muscles incubated in standard KRB buffer with 5% CO2, 24% CO2 or 53% CO2 at 30°C
| Fmax (g) | Vmax (mm s−1) | Pmax (g mm s−1) | Curvature | V3g | |
|---|---|---|---|---|---|
| 5% CO2 control (n= 5) | 41.2 ± 0.7 | 38.7 ± 1.7 | 165 ± 7 | 0.29 ± 0.02 | 29.6 ± 1.2 |
| 24% CO2 (n= 5) | 39.3 ± 0,3 | 37.3 ± 2.0 | 142 ± 6*** | 0.27 ± 0.02 | 26.9 ± 1.4*** |
| 5% CO2 recovery (n= 5) | 38.3 ± 1.7 | 37.7 ± 1.6 | 153 ± 11* | 0.30 ± 0.02 | 28.4 ± 1.4 ** |
| 5% CO2 control (n= 6) | 46.9 ± 1.2 | 43.6 ± 1.1 | 209 ± 6 | 0.28 ± 0.01 | 34.1 ± 0.6 |
| 53% CO2 (n= 6) | 39.9 ± 1.0*** | 43.9 ± 1,1 | 127 ± 5*** | 0.17 ± 0.01*** | 27.2 ± 0.6*** |
| 5% CO2 recovery (n= 6) | 42.9 ± 2.3 ** | 39.8 ± 1.3 * | 175 ± 8*** | 0.27 ± 0.01 | 30.8 ± 0.6 *** |
V3g: shortening velocity at 3 g holding force. Means ±s.e.m. Difference from control value, *P < 0.05, **P < 0.01, ***P < 0.001