Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8650818 | Respiratory Physiology & Neurobiology | 2018 | 7 Pages |
Abstract
The aim of the present study was to determine the effect of hypercapnia on motor neuromuscular activity of the human triceps surae muscle. Nine subjects participated in trials in a normal breathing condition and a CO2 rebreathing condition. In both conditions, in order to provoke self-sustained muscle activity, percutaneous electrical train stimulation was applied to the tibial nerve while each subject lay on a bed. Self-sustained muscle activity, which is an indirect observation of plateau potentials in spinal motoneurons, was measured for 30â¯s after the train stimulation by using surface electromyography. The sustained muscle activity was increased by CO2 rebreathing (Pâ¯<â¯0.05). This finding suggests that motor neuromuscular activity may be linked to the respiratory system that is activated during hypercapnia.
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Authors
Kei Hatano, Kazuki Shirakawa, Noboru Usuda, Ryouta Matsuura, Yoshinori Ohtsuka, Takahiro Yunoki,