Theory construction for choice of motor strategy under functional restriction based on optimization

• Project/Area Number: 25350614
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Rehabilitation science/Welfare engineering
• Research Institution: Tohoku Bunka Gakuen University
• Principal Investigator: FUJISAWA HIROYUKI 東北文化学園大学, 健康社会システム研究科, 教授 (20316425)
• Co-Investigator(Kenkyū-buntansha): 鈴木 博人 東北文化学園大学, 医療福祉学部, 助教 (50635430) ; 村上 賢一 東北文化学園大学, 医療福祉学部, 講師 (60433520)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2013: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
• Keywords: 最適化 / 運動軌道 / 運動パターン / エネルギーコスト / 機能制限モデル / 歩行再建 / 立ち上がり動作 / またぎ動作 / 急速歩行 / 荷重分布 / 速度最適性 / COG-COPモーメントアーム / 体節傾斜角 / 障害物クリアランス / 関節運動パターン / 非対称性 / 足部接地 / 立ち上がり / jerk cost / 重心軌道 / 形成 / 機能制限

Outline of Final Research Achievements

The purpose of this study was to construct theory for choice of motor strategy under functional restriction based on optimization. At the first experiment, the relationship between the joint movement pattern and the energy cost (EC) during walking under a functional restriction of the hip flexion was examined. At the second experiment, we examined the relationship between jerk cost and the formation of the center of gravity trajectory during sit-to-stand motion with asymmetrical foot placement. At the third experiment, the relationship between stepping-over motion and floor reaction force under the restriction of knee flexion was examined. In conclusion, it was indicated that EC greatly contributed to the formation of joint movement pattern under functional restriction. On the other hand, it was shown that safety is given priority if they must avoid risk such as falls.

Research Products

• [Journal Article] The role of interaction torque and muscle torque in the control of downward squatting (2016)
  • Author(s): Fujisawa H, Suzuki H, Murakami K, Kawakami S, Suzuki M
  • Journal Title: J Phys Ther Sci Volume: 28 Pages: 613-620
  • NAID: 130005127353
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The relationship between energy cost and the center of gravity trajectoryduring sit-to-stand motion (2015)
  • Author(s): Fujisawa H, Suzuki H, Murakami K, Kawakmi S, Suzuki M
  • Journal Title: J Phys Ther Sci Volume: 27 Pages: 3883-3886
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Presentation] 急速歩行開始時における運動パターンの研究 (2017)
  • Author(s): 吉田高幸
  • Organizer: Human Movement 研究会
  • Place of Presentation: 北海道科学大学
• [Presentation] Relationship between gait and energy cost under functional restriction (2015)
  • Author(s): Higuchi Asami
  • Organizer: World Confederation for Physical Therapy Congress 2015
  • Place of Presentation: Singaore
  • Year and Date: 2015-05-01 – 2015-05-05
• [Presentation] A study on the formation of center of gravity trajectory during sit-to-stand motion with asymmetrical foot placement (2015)
  • Author(s): Fujisawa H, Takahashi R, Kanda M, Sugawara M, Yasuda M, Suzuki H, Suzuki M
  • Organizer: World Confederation for Physical Therapy Congress 2015
  • Place of Presentation: Singapore
  • Year and Date: 2015-05-01
  • Int'l Joint Research
• [Presentation] Relationship between gait pattern and energy cost under functional restriction (2015)
  • Author(s): Higuchi A, Suzuki H, Kawakami S, Fujisawa H
  • Organizer: World Confederation for Physical Therapy Congress 2015
  • Place of Presentation: Singapore
  • Year and Date: 2015-05-01
  • Int'l Joint Research