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Fig. 3. Postnatal time-course of whole body mass (A), three architectural
parameters: muscle mass (B), fiber length (C) and physiological
cross-sectional area (PCSA; D), and postnatal time-course of isometric stress
(E). Muscle mass (F) and fiber length (G) were positively correlated with
contractile function (mass: P<0.001, R2=0.52;
fiber length: P<0.0001, R2=0.82), but PCSA (H)
was uncorrelated (P>0.1, R2=0.06).
*P<0.05 relative to the previous time-point.