H-reflex is analogous to the mechanically induced spinal stretch reflex (for example, knee jerk reflex) because both cases muscle-spindle innervating fibers are activated. Although stretch reflex gives just qualitative information about muscle spindles and relfex arch activity; if the purpose of the test to compare performances from different subjects, H-reflex should be used. In that case, in fact, latencies (ms) and amplitudes (mV) of H-wave can be compared.
J Neurophysiol.: Task-specific depression of the soleus H-reflex after co-contraction training of antagonistic ankle muscles.(Reprint)
Jan 01, 2009; Ballet dancers have small soleus (SOL) H-reflex amplitudes, which may be related to frequent use of co-contraction of...