title: Influence of transcutaneous electrical nerve stimulation conditions on disynaptic reciprocal Ia inhibition and presynaptic inhibition in healthy adults.
abstract: This study investigated the influence of stimulus conditions of transcutaneous electrical nerve stimulation (TENS) on disynaptic reciprocal Ia inhibition (RI) and presynaptic inhibition (D1 inhibition) in healthy adults. Eight healthy participants received TENS (stimulus frequencies of 50, 100, and 200 Hz) over the deep peroneal nerve and tibialis anterior (TA) muscle in the resting condition for 30 min. At pre- and post-intervention, the RI from the TA to the soleus (SOL) and D1 inhibition of the SOL alpha motor neuron were assessed by evoked electromyography. The results showed that RI was not changed by TENS at any stimulus frequency condition. Conversely, D1 inhibition was significantly changed by TENS regardless of the stimulus frequency. The present results and previous studies pertaining to RI suggest that the resting condition might strongly influence the lack of pre- vs. post-intervention change in the RI. Regarding the D1 inhibition, the present results suggest that the effect of TENS might be caused by post-tetanic potentiation. The knowledge gained from the present study might contribute to a better understanding of fundamental studies of TENS in healthy adults and its clinical application for stroke survivors.
authors.affiliation: a Department of Rehabilitation , Kawamura Hospital , Gifu , Japan.
authors.forename: Kazuya
authors.initials: K
authors.lastname: Takeda
authors.affiliation: b Faculty of Rehabilitation, School of Health Sciences , Fujita Health University , Aichi , Japan.
authors.forename: Shigeo
authors.initials: S
authors.lastname: Tanabe
authors.affiliation: b Faculty of Rehabilitation, School of Health Sciences , Fujita Health University , Aichi , Japan.
authors.forename: Soichiro
authors.initials: S
authors.lastname: Koyama
authors.affiliation: a Department of Rehabilitation , Kawamura Hospital , Gifu , Japan.
authors.forename: Kosuke
authors.initials: K
authors.lastname: Ushiroyama
authors.affiliation: a Department of Rehabilitation , Kawamura Hospital , Gifu , Japan.
authors.forename: Yuki
authors.initials: Y
authors.lastname: Naoi
authors.affiliation: a Department of Rehabilitation , Kawamura Hospital , Gifu , Japan.
authors.forename: Ikuo
authors.initials: I
authors.lastname: Motoya
authors.affiliation: b Faculty of Rehabilitation, School of Health Sciences , Fujita Health University , Aichi , Japan.
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Sakurai
authors.affiliation: b Faculty of Rehabilitation, School of Health Sciences , Fujita Health University , Aichi , Japan.
authors.forename: Yoshikiyo
authors.initials: Y
authors.lastname: Kanada
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D055592:Biophysical Phenomena / Q000502:physiology; D004576:Electromyography; D005260:Female; D006181:H-Reflex / Q000502:physiology; D064368:Healthy Volunteers; D006801:Humans; D008297:Male; D018482:Muscle, Skeletal / Q000502:physiology*; D009433:Neural Inhibition / Q000502:physiology*; D004561:Transcutaneous Electric Nerve Stimulation; D055815:Young Adult
keywords: Disynaptic reciprocal Ia inhibition; presynaptic inhibition; transcutaneous electrical nerve stimulation