TABLE 2.
Isometric force (T0), strain of the half-sarcomere (Y0), and strain of the attached myosin heads (s) measured in fibers activated at different pCa
| pCa | T0 (kPa) | Y0 (nm hs−1) | s (nm hs−1) |
|---|---|---|---|
| 5.68 ± 0.03 | 27 ± 3 | 4.45 ± 0.37 | 3.88 ± 0.39 |
| 5.53 ± 0.02 | 75 ± 7 | 5.82 ± 0.24 | 4.24 ± 0.19 |
| 5.36 ± 0.04 | 115 ± 9 | 6.43 ± 0.36 | 4.02 ± 0.30 |
| 4.50 | 168 ± 15 | 7.46 ± 0.64 | 3.93 ± 0.51 |
The data represent the mean ± SE from five fibres grouped in four classes of force. The temperature was 12.6 ± 0.3°C. SE in the pCa column is because the force classes are not necessarily taken from the same pCa.