FIGURE 2.
Changes in the TS muscle strength in the I–IV series of fatigue stimulation. There are normalized averaged force (mean ± SD) (normalization with respect to the first series) values. The averaging procedure has been applied to the data registered in six animals of the fatigue-induced group of rats (group 1), and the data were averaged with respect to the corresponding stimulation series. Asterisks denote significant differences (P < 0.05) between the muscle strength of different electrical stimulation series.