Data are means ± SD. For plantar flexor (PF) and knee extensor (KE) muscles, thickness is the sum of all muscles, while pennation angle and absolute/relative fascicle length are the average of all mus
P values (*P��0.01; **P��0.001) from bootstrap tests comparing the major axis slope (above diagonal) and y intercepts (below diagonal) for male and female ontogenetic trajectories. Bold P values indic