Fig. 7.

H-reflexes during static position, passive shortening, and lengthening in soleus and tibialis anterior. a, b Averaged representative traces in response to submaximal percutaneous nerve stimulation during static position (left panel), passive shortening (centre panel), and passive lengthening (right panel) in soleus (a) and tibialis anterior (b). Traces are shown from the point of stimulus and each representative trace is an average of ten responses. Dashed lines represent the amplitude of H-reflex during static position. c, d Amplitude of H-reflex expressed as a percentage of the amplitude of maximal compound action potential during static position (STAT), passive shortening (SHO), and passive lengthening (LEN) in soleus (c) and tibialis anterior (d). Open squares and full lines represent the sample mean, whilst open circles and dashed lines denote individual responses (n = 5). *p < 0.05 compared to passive shortening