A force and motion produced by a combined electrical neuromuscular stimulation to wrist extensors and flexors in humans

• Project/Area Number: 24590230
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: General anatomy (including Histology/Embryology)
• Research Institution: Yamagata University
• Principal Investigator: NAITO Akira 山形大学, 医学部, 教授 (90188855)
• Research Collaborator: KATO Katsuhiko ; NAGANUMA Makoto ; YOSHIDA Saori ; HASHIZUME Wataru
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000); Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2012: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
• Keywords: ヒト上肢 / 神経筋電気刺激（ENS） / 手根伸筋群 / 手根屈筋群 / 組合せENS / 組合せ神経筋電気刺激

Outline of Final Research Achievements

A force and motion of the wrist produced by a combined electrical neuromuscular stimulation (ENS) to wrist extensors and flexors were studied in healthy human subjects. The combined ENS was delivered to a pair of two muscles (A, B) of which actions are adjacent to each other. ENS to each muscle with the intensity for the maximum contraction produced a force (AF, BF) and a wrist-bending motion to the maximal range of motion in each individual direction (AM, BM). Simultaneous ENS to the two muscles produced a force in direction between AF and BF, and a wrist-bending motion of the maximum range in direction between AM and BM. Alternating ENS to the two produced and a to-and-flow force between AF and BF, and an arc-drawing motion along a trajectory of the maximum wrist circumduction motion between AM and BM. These findings suggest a possibility that the combined ENS produces a wrist-bending force and motion in every direction and a clockwise and counterclockwise force and motion.

Research Products

• [Journal Article] Strict actions of the human wrist flexors: A study with an electrical neuromuscular stimulation method. (2015)
  • Author(s): Narita A, Sagae M, Suzuki K, Fujita T, Sotokawa T, Nakano H, Naganuma M, Sato T, Fujii H, Nito M, Hashizume W, Ogino T,Naito A
  • Journal Title: J Electromyogr Kinesiol Volume: 印刷中
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Changes of wrist motion range by changing forearm position in healthy men. (2014)
  • Author(s): Naganuma M, Sotokawa T, Fujita T, Sato T, Suzuki K, Akiyama T, Narita A, Nakano H, Fujii H, Nito M, Hashizume W, Naito A
  • Journal Title: Struct Funct Volume: 13 Pages: 8-16
  • NAID: 130005068661
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Changes of wrist-bending force by changing forearm position in men. (2014)
  • Author(s): Sotokawa T, Fujita T, Sato T, Suzuki K, Sagae M, Nakano H, Naganuma M, Narita A, Fujii H, Nito M, Hashizume W, Naito A
  • Journal Title: Struct Funct Volume: 13 Pages: 2-7
  • NAID: 130005068660
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Facilitation between extensor carpi radialis and pronator teres in humans: A study using a post=stimulus time=histogram method. (2014)
  • Author(s): Nakano H, Miyasaka T, Ogino T, Naito A
  • Journal Title: Somatosensory Motor Res Volume: 31 Pages: 214-220
  • Peer Reviewed
• [Presentation] Inhibition from the flexor carpi radialis to the brachioradialis motoneurone pool in humans: a study with an electromyogram-averaging technique. (2015)
  • Author(s): Nito M, Hashizume W, Suzuki K, NaitoA
  • Organizer: 第120回日本解剖学会総会・全国学術集会
  • Place of Presentation: 神戸国際会議場（神戸）
  • Year and Date: 2015-03-23
• [Presentation] Inhibition from the brachioradialis to the flexor carpi radialis motoneurone pool in humans (2014)
  • Author(s): Nito M, Hashizume W, Suzuki K, Sato T, Naito A
  • Organizer: 第37回日本神経科学大会
  • Place of Presentation: パシフィコ横浜（横浜）
  • Year and Date: 2014-09-12
• [Presentation] A trial to measure the motion range of the carpometacarpal joint of the thumb in healthy humans． (2014)
  • Author(s): Nito M, Hashizume W, Kiyoshige Y, Naito A
  • Organizer: 日本解剖学会第60回東北･北海道連合支部学術集会
  • Place of Presentation: 福島学院大学福島駅前キャンパス（福島）
  • Year and Date: 2014-09-06
• [Presentation] 長・短橈側手根伸筋に対する組合せ神経筋電気刺激を用いた手根の動作制御：前腕中間位
  • Author(s): 仁藤充洋、橋爪和足、長沼誠、佐藤寿晃、鈴木克彦、内藤輝
  • Organizer: 日本解剖学会東北・北海道連合支部学術集会
  • Place of Presentation: 北海道大学大学院獣医学研究科講義棟講堂（北海道札幌市）
• [Presentation] 手関節の運動と力の計測装置
  • Author(s): 内藤 輝
  • Organizer: 日本リハビリテーション医学会東北地方会
  • Place of Presentation: 山形市保健センター（山形県山形市）
  • Invited
• [Presentation] Wrist motion and force by combined electrical neuromuscular stimulation to wrist extensors with the semiprone forearm
  • Author(s): Mitsuhiro Nito, Wataru Hashizume, Makoto Naganuma, Toshiaki Sato, Katsuhiko Suzuki, Akira Naito
  • Organizer: 日本解剖学会
  • Place of Presentation: サンポートホール高松・香川国際会議場（香川県高松市）