Changes in active limb muscle volumes (Vmusc; in cm3 kg−1 m−1) with increasing dimensionless speed in Asian elephants. Speed categories 1–6 are dimensionless speeds (n = 48 steps): 1, slow (<0.3); 2, normal (0.30–0.35); 3, medium-fast (0.35–0.50); 4, fast (0.50–0.75); 5, very fast (0.75–1.0); and 6, >1.0. Error bars are ±SEM.