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

2014 Fiscal Year Final Research Report

• 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
• 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

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.

Free Research Field

解剖学、神経解剖学