TABLE 1.

Mechanical measurements in isometrically contracted skinned TC fiber bundles from WT and NEB KO mice

Lines 1–5 were measured at pCa 4.3; lines 6 and 7 were measured at a pCa range of 8.5 to 4.3. NS means not significant.

	WT	NEB KO	p value
1. Tension (mN/mm2)	84 ± 4	38 ± 2.2	<0.001
2. Stiffness (mN/mm3)	920 ± 23	388 ± 29	<0.001
3. Tension/stiffness (0.01 mm)	9.1 ± 0.4	9.7 ± 0.6	NS
4. ktr (s−1)	7.8 ± 0.3	4.7 ± 0.3	0.003
5. Tension cost (pmol mN−1 mm−1 s−1)	4.4 ± 0.3	5.9 ± 0.3	0.005
6. pCa50	5.90 ± 0.02	5.74 ± 0.01	<0.001
7. nH	4.38 ± 0.23	3.64 ± 0.14	0.02