[Effect of stretching on the resting potential of isolated frog muscle fibers]

The resting potentials of single muscle fibers of the frog increased under a 30% stretching over the rest length (sarcomere length being about 3.2 microns). If the resting potential was increased during the resting state, no augmentation of the resting potential occurs under stretching. The stretching of fibres by 60% over the rest length (sacomere length about 3.9 microns) was accompanied, as a rule, by depolarization.