Fig. 8. Interspecies variations of maximum shortening velocity (v₀) and isometric tension (P₀). (A) Relationship between v₀ (expressed in µm hs^-1 s^-1, where hs is half sarcomere, for correct comparison among species) and body size. (B) Values of P₀ measured in various fibre types in six animal species. Data for mouse, rat, rabbit and human come from Pellegrino et al. (2003); data for pig come from Toniolo et al. (2004).