Figure 1
From: The association between muscle architecture and muscle spindle abundance

Muscle spindle number correlates with fibre length, muscle pennation and physiological cross-sectional area. Spindle number is correlated with muscle fibre length (a), muscle pennation (b) and muscle physiological cross-sectional area (c). Muscle spindle abundance as indicated by the heatmap highlights that neither fibre length, muscle pennation nor physiological cross-sectional area correlated with muscle spindle abundance. *P < 0.05.