A new system to measure the trunk angle and pelvis angle during wheelchair propulsion

Atsumi Takeo, Hideto Okazaki, Kotaro Takeda, Yuki Nakagawa, Shigeru Sonoda

研究成果: ジャーナルへの寄稿学術論文査読

1 被引用数 (Scopus)


BACKGROUND: The number of wheelchair users is increasing as the population ages. However, there is still lack of tools to objectively assess posture during wheelchair propulsion. OBJECTIVE: The purpose of this study was to develop a system to measure trunk and pelvis ROM (range of motion) while driving a wheelchair and to assess the reproducibility of the measured posture changes and cyclic fluctuations during propulsion. METHODS: Motion recorders were attached to the sternum and pelvis of fifteen healthy adults, and a pressure sensor was attached to the right heel. Subjects drove a standard wheelchair using their right leg and trunk and pelvis ROM was measured in two separate sessions. To detect the trend of postural changes during propulsion, a trend curve was computed from the measured ROM using a low-pass filter and then subtracted from the measured ROM waveforms. The resulting curves were normalized and averaged, and the maximum, minimum, and amplitude of the cyclic variation during propulsion were assessed for reproducibility. RESULTS: Intraclass correlation coefficients of the maximum, minimum, and amplitude ranged from 0.65 to 0.84. CONCLUSIONS: The proposed method can estimate the posture change and the periodic fluctuation during wheelchair propulsion with high reproducibility.

ジャーナルTechnology and Health Care
出版ステータス出版済み - 2023

All Science Journal Classification (ASJC) codes

  • 生物理学
  • バイオエンジニアリング
  • 生体材料
  • 情報システム
  • 生体医工学
  • 健康情報学


「A new system to measure the trunk angle and pelvis angle during wheelchair propulsion」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。