Figure 2. Force traces for a slow type I fibre.

The left trace is a force recording at the beginning of the experiment (exp) under control conditions (pH 7.0 and 15°C), while the right trace is under the same conditions but following the 30°C experiments carried out at pH 6.2 and 7.0. This representative fibre had maintained 93% of its initial peak force (P₀). The large deflections at the beginning and end of each force record are artifacts caused during movement of the fibre between the relaxing and activating solutions.