Table 1.

The theoretical time of the quick release is converted into the experimental time by multiplying the “fibre mass” by a proper factor.

T0, kN/m2	Fibre length, mm	Fibre stiffness	Time to reduce force to zero (theory) μs	Time to reduce force to zero (experiment) μs	Mass factor
270*	5.34	8.427 109	43.13	180	17.45
160.87**	1.27	3.312 1010	9.9	110	124
176***	1.27	3.938 1010	9.07	150	274
146****	5.17	7.9 109	40.87	110	7.25

^*)Ford et al. (1977), fibre density 1190 kg/m³, fibre mass 6.3546 kg/cross-section of 1 m², sarcomere length 2 μm;

^**)Linari et al. (1998), fibre density 1.035 kg/m³, fibre mass 1.314 kg/cross-section of 1 m², sarcomere length 2.04 μm;

^***)Piazzesi et al. (2002), fibre density 1035 kg/m³, fibre mass 1.314 kg/m³, sarcomere length 2.12 μm;

^****)Piazzesi et al. (2003), fibre density 1035 kg/m³, fibre mass 5.35 kg/m³, sarcomere length 2.11 μm.