Figure 2.

Force and sarcomere length records during ramp stretches applied with and without a conditioning step release. Upper traces: sarcomere length; lower traces: tension. Stretches were applied in the absence of any conditioning length change (0) or 0.4, 1, and 2 ms after a step release applied at ∼0.5 P₀. Peak force does not change significantly during the quick force recovery. Step release, 3.91 nm hs⁻¹ amplitude, 170 μs duration. The same fiber as in Fig. 1. Fast sampling starts at the interruption on the traces.