Figure 10. Temporal evolution of average sarcomere length in chronically stretched skeletal muscle.

Upon stretching the biceps brachii muscle by 1.14, the average sarcomere length increases acutely to 1.105 times its initial length and then returns chronically to its initial length within two weeks. Averaged sarcomere length at discrete time points (white circles) correspond to the volume averaged elastic stretches , averaged over the muscle tissue region in Figure 8.