Medial gastrocnemius is more activated than lateral gastrocnemius in sural nerve induced reflexes during human gait.
In humans the sural nerve was stimulated at one of 16 phases of the step cycle. In MG (medial gastrocnemius) the amplitude of the P2 responses (latency 80-93 ms) was on average 1.3 times larger than the corresponding background activity while this was 0.9 for LG (lateral gastrocnemius; predominantly suppressive responses). It is speculated that such differences contribute to an exorotation moment during gait.
Duysens
J
J
Department of Medical Physics and Biophysics, University of Nijmegen, The Netherlands.
van Wezel
B M
BM
Prokop
T
T
Berger
W
W
D000328:Adult; D004558:Electric Stimulation; D005684:Gait; D006801:Humans; D018482:Muscle, Skeletal / Q000294:innervation / Q000502:physiology*; D011930:Reaction Time; D012018:Reflex; D013497:Sural Nerve / Q000502:physiology*