Fig. 6
From: Maintenance of contractile force of the hind limb muscles by the somato-lumbar sympathetic reflexes
Effect of lumbar sympathetic trunk stimulation on the tetanic force of the triceps surae muscles. a, b Typical responses of the tetanic force of the triceps surae muscles and mean arterial pressure induced by tetanic stimulation of the intact tibial nerve before (a) and during (b) stimulation (10 Hz) of the cut peripheral end of the LST. c Averaged waveform of the 30 tetanic contractions without (dotted line) and with (solid line) LST stimulation. d Summary (n = 7–9 from eight rats) of the changes in the amplitude of the tetanic force, expressed as a percentage of the prestimulus control level. Each column or vertical bar indicates the median and interquartile range. Each circle indicates individual data for stimulation. Data of sham stimulation are shown as x. Horizontal axis: frequency of LST stimulation. Vertical axis: changes in the peak amplitude of the tetanic force, expressed as a percentage of the control just before LST stimulation. #p < 0.05, ##p < 0.01 (Wilcoxon signed-rank test; compared with the peristimulus control using absolute values of tetanic force)