Fig. 9. Summary of bending and red muscle activity for mean values of four lungfish in viscosities of 1 (A), 10 (B), 100 (C) and 1000 cSt (D). The time of all graphs is standardized to 50% of a cycle when the body at 0.5 L was bent maximally convex towards the side of muscle activity. The horizontal bars indicate the average timing of muscle activity relative to bending at a particular longitudinal location. Muscle activity between maximum convexity and maximum concavity correlates with activity during contractile tissue shortening.