Difference in Pain and Discomfort of Comparable Wrist Movements Induced by Magnetic or Electrical Stimulation for Peripheral Nerves in the Dorsal Forearm

Genji Abe,1,2,* Hideki Oyama,3,* Zhenyi Liao,1 Keita Honda,1 Kenji Yashima,4 Akihiko Asao,5 Shin-Ichi Izumi1,3 1Department of Physical Medicine and Rehabilitation, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan; 2Department of Rehabilitation, Faculty of Medical Science and Welf...

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Autores principales:	Abe G, Oyama H, Liao Z, Honda K, Yashima K, Asao A, Izumi SI
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2020
Materias:	peripheral magnetic stimulation peripheral electrical stimulation pain discomfort integrated range of wrist movement Medical technology R855-855.5
Acceso en línea:	https://doaj.org/article/67e1a50a34824221accfcd2211067692
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spelling	oai:doaj.org-article:67e1a50a34824221accfcd22110676922021-12-02T12:42:33ZDifference in Pain and Discomfort of Comparable Wrist Movements Induced by Magnetic or Electrical Stimulation for Peripheral Nerves in the Dorsal Forearm1179-1470https://doaj.org/article/67e1a50a34824221accfcd22110676922020-12-01T00:00:00Zhttps://www.dovepress.com/difference-in-pain-and-discomfort-of-comparable-wrist-movements-induce-peer-reviewed-article-MDERhttps://doaj.org/toc/1179-1470Genji Abe,1,2,* Hideki Oyama,3,* Zhenyi Liao,1 Keita Honda,1 Kenji Yashima,4 Akihiko Asao,5 Shin-Ichi Izumi1,3 1Department of Physical Medicine and Rehabilitation, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan; 2Department of Rehabilitation, Faculty of Medical Science and Welfare, Tohoku Bunka Gakuen University, Sendai, Miyagi, Japan; 3Department of Physical Medicine and Rehabilitation, Graduate School of Biomedical Engineering, Tohoku University, Sendai, Miyagi, Japan; 4IFG Corporation, Sendai, Miyagi, Japan; 5Department of Occupational Therapy, Niigata University of Health and Welfare, Niigata, Japan*These author contributed equally to this workCorrespondence: Genji AbeTohoku University Graduate School of Medicine, Sendai-shi, Miyagi, JapanTel +81-22-717-7338Fax +81-22-717-7340Email genji.abe@gmail.comPurpose: Both repetitive peripheral magnetic stimulation (rPMS) and transcutaneous electrical current stimulation (TES) could elicit the limb movements; it is still unclear how subjective sensation is changed according to the amount of limb movements. We investigated the pain and discomfort induced by newly developed rPMS and TES of peripheral nerves in the dorsal forearm.Methods: The subjects were 12 healthy adults. The stimulus site was the right dorsal forearm; thus, when stimulated, wrist dorsiflexion was induced. The rPMS was delivered by the new stimulator, Pathleader at 10 stimulus intensity levels, and TES intensity was in 1-mA increments. The duration of each stimulation was 2 s. The analysis parameters were subjective pain and discomfort, measured by a numerical rating scale. The rating scale at corresponding levels of integrated range of movement (iROM) induced by rPMS or TES was compared. The subjective values were analyzed by two-way repeated measures ANOVA with the stimulus conditions (rPMS, TES) and the seven levels of iROM (20– 140 ºs).Results: In the rPMS experiments, stimuli were administered to all subjects at all stimulus intensities. In the TES experiments, none of the subjects dropped out between 1 and 16 mA, but there were dropouts at each of the intensities as follows: 1 subject at 17 mA, 20 mA, 22 mA, 23 mA, 27 mA, 29 mA and 2 subjects at 21 mA, 24 mA, 26 mA. The main effects of the stimulus conditions and iROM were significant for pain and discomfort. Post hoc analysis demonstrated that pain and discomfort in rPMS were significantly lower compared to TES when the iROM was above 60 ºs and 80 ºs, respectively.Conclusion: New rPMS stimulator, Pathleader, caused less pain and discomfort than TES, but this was only evident when comparatively large joint movements occurred.Keywords: peripheral magnetic stimulation, peripheral electrical stimulation, pain, discomfort, integrated range of wrist movementAbe GOyama HLiao ZHonda KYashima KAsao AIzumi SIDove Medical Pressarticleperipheral magnetic stimulationperipheral electrical stimulationpaindiscomfortintegrated range of wrist movementMedical technologyR855-855.5ENMedical Devices: Evidence and Research, Vol Volume 13, Pp 439-447 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	peripheral magnetic stimulation peripheral electrical stimulation pain discomfort integrated range of wrist movement Medical technology R855-855.5
spellingShingle	peripheral magnetic stimulation peripheral electrical stimulation pain discomfort integrated range of wrist movement Medical technology R855-855.5 Abe G Oyama H Liao Z Honda K Yashima K Asao A Izumi SI Difference in Pain and Discomfort of Comparable Wrist Movements Induced by Magnetic or Electrical Stimulation for Peripheral Nerves in the Dorsal Forearm
description	Genji Abe,1,2,* Hideki Oyama,3,* Zhenyi Liao,1 Keita Honda,1 Kenji Yashima,4 Akihiko Asao,5 Shin-Ichi Izumi1,3 1Department of Physical Medicine and Rehabilitation, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan; 2Department of Rehabilitation, Faculty of Medical Science and Welfare, Tohoku Bunka Gakuen University, Sendai, Miyagi, Japan; 3Department of Physical Medicine and Rehabilitation, Graduate School of Biomedical Engineering, Tohoku University, Sendai, Miyagi, Japan; 4IFG Corporation, Sendai, Miyagi, Japan; 5Department of Occupational Therapy, Niigata University of Health and Welfare, Niigata, Japan*These author contributed equally to this workCorrespondence: Genji AbeTohoku University Graduate School of Medicine, Sendai-shi, Miyagi, JapanTel +81-22-717-7338Fax +81-22-717-7340Email genji.abe@gmail.comPurpose: Both repetitive peripheral magnetic stimulation (rPMS) and transcutaneous electrical current stimulation (TES) could elicit the limb movements; it is still unclear how subjective sensation is changed according to the amount of limb movements. We investigated the pain and discomfort induced by newly developed rPMS and TES of peripheral nerves in the dorsal forearm.Methods: The subjects were 12 healthy adults. The stimulus site was the right dorsal forearm; thus, when stimulated, wrist dorsiflexion was induced. The rPMS was delivered by the new stimulator, Pathleader at 10 stimulus intensity levels, and TES intensity was in 1-mA increments. The duration of each stimulation was 2 s. The analysis parameters were subjective pain and discomfort, measured by a numerical rating scale. The rating scale at corresponding levels of integrated range of movement (iROM) induced by rPMS or TES was compared. The subjective values were analyzed by two-way repeated measures ANOVA with the stimulus conditions (rPMS, TES) and the seven levels of iROM (20– 140 ºs).Results: In the rPMS experiments, stimuli were administered to all subjects at all stimulus intensities. In the TES experiments, none of the subjects dropped out between 1 and 16 mA, but there were dropouts at each of the intensities as follows: 1 subject at 17 mA, 20 mA, 22 mA, 23 mA, 27 mA, 29 mA and 2 subjects at 21 mA, 24 mA, 26 mA. The main effects of the stimulus conditions and iROM were significant for pain and discomfort. Post hoc analysis demonstrated that pain and discomfort in rPMS were significantly lower compared to TES when the iROM was above 60 ºs and 80 ºs, respectively.Conclusion: New rPMS stimulator, Pathleader, caused less pain and discomfort than TES, but this was only evident when comparatively large joint movements occurred.Keywords: peripheral magnetic stimulation, peripheral electrical stimulation, pain, discomfort, integrated range of wrist movement
format	article
author	Abe G Oyama H Liao Z Honda K Yashima K Asao A Izumi SI
author_facet	Abe G Oyama H Liao Z Honda K Yashima K Asao A Izumi SI
author_sort	Abe G
title	Difference in Pain and Discomfort of Comparable Wrist Movements Induced by Magnetic or Electrical Stimulation for Peripheral Nerves in the Dorsal Forearm
title_short	Difference in Pain and Discomfort of Comparable Wrist Movements Induced by Magnetic or Electrical Stimulation for Peripheral Nerves in the Dorsal Forearm
title_full	Difference in Pain and Discomfort of Comparable Wrist Movements Induced by Magnetic or Electrical Stimulation for Peripheral Nerves in the Dorsal Forearm
title_fullStr	Difference in Pain and Discomfort of Comparable Wrist Movements Induced by Magnetic or Electrical Stimulation for Peripheral Nerves in the Dorsal Forearm
title_full_unstemmed	Difference in Pain and Discomfort of Comparable Wrist Movements Induced by Magnetic or Electrical Stimulation for Peripheral Nerves in the Dorsal Forearm
title_sort	difference in pain and discomfort of comparable wrist movements induced by magnetic or electrical stimulation for peripheral nerves in the dorsal forearm
publisher	Dove Medical Press
publishDate	2020
url	https://doaj.org/article/67e1a50a34824221accfcd2211067692
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Difference in Pain and Discomfort of Comparable Wrist Movements Induced by Magnetic or Electrical Stimulation for Peripheral Nerves in the Dorsal Forearm

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