Relationship between coordination ability of the finger and upper limb performance ability and muscle activity

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K11319
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 59010:Rehabilitation science-related
• Research Institution: Kanazawa University
• Principal Investigator: Nishimura Seiji 金沢大学, 保健学系, 教授 (70251965)
• Co-Investigator(Kenkyū-buntansha): 立矢 宏 金沢大学, フロンティア工学系, 教授 (10216989)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 母指 / 手指 / 運動調節能 / オコナー巧緻テスト / パーデューペグボードテスト

Outline of Final Research Achievements

This study used an original measurement system to measure the motor control capacity of 25% of the maximal muscle strength of the thumb, index, and middle fingers, and to examine its relationship with the O'Connor dexterity test and the Perdue Pegboard test.
The correlations between thumb flexion and the right hand and assembly of the O'Connor's dexterity test and the Perdue-Pegboard test were r = 0.25, r = -0.15, and r = 0.06, respectively. The flexion of the index finger was r = 0.48, r = -0.36, and r = -0.31, respectively, and that of the middle finger was r = 0.05, r = 0.12, and r = 0.19, respectively. Only the index finger showed a weak correlation (P<0.05) with the right hand in the O'Connor's dexterity test and the Perdue Pegboard test.In other words, the results suggest that flexion of the index finger contributes most to hand dexterity in light force pinching movements.

Free Research Field

リハビリテーション

Academic Significance and Societal Importance of the Research Achievements

母指，示指，中指屈曲の最大筋力25％の運動調節能とオコナー巧緻テスト，パーデューペグボードテストとの関連性を検証し，示指は軽度のつまみ動作で最も手の巧緻能力に寄与していることが示唆された．また今回の研究から，母指，手指の運動調節能の計測は，手の巧緻能力を推測できる可能性を示しており，さらに外傷手のリハビリテーションで運動調節能を高めることは，手の機能の再獲得の効果が期待できる可能性が示唆された．