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Table 1. Physical Characteristics and Mechanical Parameters of Contraction, Relaxation, and Contraction–Relaxation Coupling in Adult and Postnatal Rats

Data are mean ± SD.

*P < 0.05 versus  adult rats.

Lmax= initial muscle length at the apex of the length-active isometric tension curve; ΔL = maximum extent of shortening; Vmax= maximum unloaded shortening velocity; Vc = maximum shortening velocity; AF = maximum isometric active force normalized per cross-sectional area;

+dF/dt = maximum positive peak force derivative; Vr = maximum lengthening velocity; −dF/dt = maximum negative peak force derivative.

Table 1. Physical Characteristics and Mechanical Parameters of Contraction, Relaxation, and Contraction–Relaxation Coupling in Adult and Postnatal Rats
Table 1. Physical Characteristics and Mechanical Parameters of Contraction, Relaxation, and Contraction–Relaxation Coupling in Adult and Postnatal Rats
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