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Muscle preparation characteristics
| Sarcomere length | |||||||
|---|---|---|---|---|---|---|---|
| n | Length (μm) | Width (μm) | pCa 9.0 (μm) | pCa 4.5 (μm) | Maximum force (μN) | Peak power output (μW mg−1) | |
| Cardiac myocytes | 8 | 138 ± 36 | 20 ± 4 | 2.29 ± 0.06 | 2.27 ± 0.05 | 9.4 ± 3.5 | 3.21 ± 1.60 |
| Fast-twitch fibres | 6 | 929 ± 125 | 79 ± 10 | 2.68 ± 0.07 | 2.54 ± 0.06 | 395 ± 70 | 12.0 ± 3.8 |
| Slow-twitch fibres | 5 | 1200 ± 208 | 88 ± 10 | 2.38 ± 0.14 | 2.31 ± 0.12 | 485 ± 62 | 2.72 ± 0.68 |
Values are means ± s. d.
