4444
Muscle tone was examined using a combined mechanoand electromyographic method , which measured simultaneously the muscle resistance ( MMG ) of the rat ' s hind foot to passive extension and flexion in the ankle joint and the electromyographic activity ( EMG ) of the antagonistic muscles of that joint : gastrocnemius and tibialis anterior .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 None