Figure 2
From: Anatomical and ontogenetic influences on muscle density
The distributions for the density of each muscle per each of the three cohorts: C1 = 3 weeks; C2 = 8 months; C3 = 2 years old. The lines above the box plots indicate significant differences between connected columns (* p < 0.05, ** p < 0.01, *** p < 0.0001) for each muscle. The light gray and medium gray lines depict the constants taken from Mendez and Keys (1.0597 g/cm3; 1960) and Murphy and Beardsley (1.0564 g/cm3; 1974) respectively. The black line represents the grand mean of all the muscles measured in this study (1.0546 g/cm3; n = 594 muscles). One data outlier (C1 of the quadratus labii; density of 1.16 g/cm3) omitted for graphical clarity.
