Evaluation of gait dynamics by nonlinear analysis and its clinical application

• Project/Area Number: 26350620
• 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: Yamagata Prefectural University of Health Science
• Principal Investigator: Makabe Hitoshi 山形県立保健医療大学, 保健医療学部, 教授 (60363743)
• Co-Investigator(Renkei-kenkyūsha): KANZAKI HIDETO 山形県立保健医療大学, 保健医療学部, 教授 (10381352) ; MINAMISAWA TADAYOSHI 山形県立保健医療大学, 保健医療学部, 講師 (40347208)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
• Keywords: 歩行 / ストライドインターバル / 非線形解析 / スケーリング指数 / 近似エントロピー / 認知課題 / 長期相関 / 規則性 / エントロピー / 杖歩行 / 脚長差

Outline of Final Research Achievements

This study was aimed at analyzing stride interval (SI) variability during gait by using nonlinear analysis and examining its clinical usefulness. The scaling exponent (α) and approximate entropy (ApEn) were determined as evaluation parameters in the nonlinear analysis. α showed long-range correlation in SI variability, while ApEn presented regularity in SI variability. The results of this study showed a significant difference in α and ApEn by walking stick use and leg-length difference. Significant differences were observed in α and ApEn, depending on age, and the difference became remarkable, especially by loading a cognitive task. Those may be caused by deterioration of brain network function during gait due to aging. Hence, α and ApEn may be useful indicators of deterioration of brain network function.

Research Products

• [Journal Article] 杖歩行パターンがストライドインターバルの変動に及ぼす影響 (2014)
  • Author(s): 高橋裕香，真壁寿
  • Journal Title: 山形理学療法学 Volume: 11 Pages: 23-28
  • Peer Reviewed
• [Presentation] Influence of using t-cane on variability of stride interval at a self-selected gait speed (2016)
  • Author(s): Makabe H, Takahashi Y, Take H, Kaneko K, Sakamoto K
  • Organizer: International Society of Electrophysiology and Kinesiology
  • Place of Presentation: Chicago
  • Year and Date: 2016-07-05
  • Int'l Joint Research
• [Presentation] Influence of using t-cane on variability of stride interval at a self-selected gait speed (2016)
  • Author(s): Hitoshi Makabe, Yuka Takahashi, Hitomi Take, Kenichi Kaneko, Sakamoto Kazuyoshi
  • Organizer: The 21th International Society of Electrophysiology and Kinesiology Congress
  • Place of Presentation: Chicago
  • Year and Date: 2016-07-05
  • Int'l Joint Research
• [Presentation] Effect of leg length discrepancy on the dynamics of stride interval during self-paced walking (2015)
  • Author(s): Take H, Makabe H, Takahashi Y.
  • Organizer: World Confederation for Physical Therapy Congress 2015
  • Place of Presentation: Singapore
  • Year and Date: 2015-05-01 – 2015-05-04
• [Presentation] T字杖歩行がストライドインターバルの変動に及ぼす影響 (2014)
  • Author(s): 高橋裕香，真壁寿
  • Organizer: 第23回山形県理学療法学術大会
  • Place of Presentation: 山形市
  • Year and Date: 2014-06-21 – 2014-06-22