Investigation of developmental factor in trunk control during arm flexion

2023 Fiscal Year Final Research Report

• Project/Area Number: 19K11589
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 59030:Physical education, and physical and health education-related
• Research Institution: Osaka University of Comprehensive Children Education
• Principal Investigator: Kiyota Takeo 大阪総合保育大学, 児童保育学部, 教授 (40434956)
• Co-Investigator(Kenkyū-buntansha): 藤原 勝夫 金沢学院大学, 人間健康学部, 教授 (60190089)
• Project Period (FY): 2019-04-01 – 2024-03-31
• Keywords: 上肢屈曲運動時 / 予測的姿勢筋活動 / 幼児 / 重量負荷 / 体幹 / 運動経験 / 筋電図

Outline of Final Research Achievements

This study aimed to investigate the factors that affect the development of trunk control for bilateral arm flexion during standing. The study examined the following factors: (1) arm movement dynamics, (2) postural set of the trunk before the arm movements, (3) behavioral condition, and (4) athletic experience. The analysis focused on the anticipatory postural muscle activity for arm flexion in children. The study found that in children, arm movement dynamics, behavioral condition, and athletic experience influenced muscle activity in the erector spinae, which primarily controls trunk posture, but not in the biceps femoris. However, the study suggested that further investigation is needed on the influence of the postural set of the trunk for the postural activity, as it was challenging to measure its effect in children despite being measurable in adults.

Free Research Field

運動生理学

Academic Significance and Societal Importance of the Research Achievements

本研究では、幼児における立位での上肢屈曲運動時の体幹制御が、上肢運動の力学的要因、行為条件、運動経験による影響を受けることを初めて明らかにした。これは、予測的姿勢制御の発達の研究史の中で、貴重な知見となるものである。この知見は、幼児期の子どもたちのバランス機能の向上を目指した発達段階ごとの運動遊びの考案や、それに関わる環境の設定にも寄与するものと考えられる。