論文

査読有り 国際誌
2019年7月

The kinetic mechanisms of vertical pointing movements.

Heliyon
  • Shinji Yamamoto
  • ,
  • Keisuke Fujii
  • ,
  • Kisho Zippo
  • ,
  • Keisuke Kushiro
  • ,
  • Masanobu Araki

5
7
開始ページ
e02012
終了ページ
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/j.heliyon.2019.e02012

The present study utilized induced acceleration analysis to clarify the contributions of muscular and gravitational torques to the kinematics of vertical pointing movements performed by the upper limb. The study included eight healthy men with a mean age of 25 years. The experiment was divided into three blocks with ten trials in each, comprising five upward and five downward, randomly executed movements. The movements were recorded by a motion capture system and were subsequently analyzed. During the deceleration phase of the upward movement and the acceleration phase of the downward movement, the angular acceleration induced by gravitational torque contributed more to the generation of net induced angular acceleration than the angular acceleration induced by muscular torque. In addition, the difference between the net induced angular acceleration profiles during the upward and downward movements was mainly attributable to the difference between the respective angular acceleration profiles induced by muscular torque. These findings suggest that the central nervous system considers the gravitational effect on the upper limb in a phase-specific manner and accordingly generates a torque-derived kinematic difference with respect to the movement direction.

リンク情報
DOI
https://doi.org/10.1016/j.heliyon.2019.e02012
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/31360781
PubMed Central
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6637177
ID情報
  • DOI : 10.1016/j.heliyon.2019.e02012
  • PubMed ID : 31360781
  • PubMed Central 記事ID : PMC6637177

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