心理的プレッシャーが 1 歩踏み出し運動の初期姿勢ならびに予測的姿勢制御に及ぼす影響

• 佐々木 丈予

  広島大学大学院総合科学研究科

• 関矢 寛史

  広島大学大学院総合科学研究科

書誌事項

タイトル別名

• Influence of psychological pressure on initial posture and anticipatory postural adjustment when performing a single forward step movement
• シンリテキ プレッシャー ガ 1ポ フミダシ ウンドウ ノ ショキ シセイ ナラビニ ヨソクテキ シセイ セイギョ ニ オヨボス エイキョウ

抄録

  The objective of the present study was to investigate the influences of psychological pressure on initial posture and anticipatory postural adjustment (APA) when performing a single forward step movement. Fourteen participants performed a single step toward a circular target (10 cm in diameter) in response to a beep sound. The trials were conducted under non-pressure and pressure conditions, with 10 attempts for each. In performing the task, participants were required to respond rapidly to the beep sound, to be as brief as possible with the stepping movement, and to place their foot accurately in the landing position on the target. Pressure was induced by a small audience and false instructions of starting over the same experiment on another day and the presentation of video-taped performance in a sports science lecture if performance does not reach a criteria. The results showed that state anxiety (state-trait anxiety inventory: STAI Y-1) increased from 42.4 (±7.0) to 53.7 (±8.7) and that heart rate also increased from 76.2 (±7.0) bpm to 83.4 (±9.3) bpm when the participants were under pressure. Significant increases in mean radial error and bivariate variable error were found, indicating that accuracy of stepping in the landing position was reduced under pressure. Kinematic analysis showed that, in the initial posture phase, significant trunk inclination was observed under pressure. Kinetic data obtained using a force plate showed that mean and maximal force in the posterior direction increased when under pressure. Furthermore, the EMG activity levels of the tibialis anterior muscles increased under pressure. These results indicate that pressure affects both the initial posture and APA when performing a single forward step movement.<br>

収録刊行物

• 体育学研究

  体育学研究 59 (2), 577-589, 2014

  一般社団法人 日本体育・スポーツ・健康学会

キーワード

• あがり
• 姿勢準備
• 踏み出し

詳細情報

• CRID: 1390001204101153792
• NII論文ID: 130004687787
• NII論文ID: 40020312899
• NII書誌ID: AN00409623
• DOI: 10.5432/jjpehss.14011
• ISSN: 18817718
• ISSN: 04846710
• NDL書誌ID: 026002766
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026002766
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可