Force reserve immediately after task failure

2022 Fiscal Year Final Research Report

• Project/Area Number: 19K11594
• 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: Joetsu University of Education
• Principal Investigator: Matsuura Ryouta 上越教育大学, 大学院学校教育研究科, 准教授 (10551278)
• Project Period (FY): 2019-04-01 – 2023-03-31
• Keywords: 筋疲労 / 疲労困憊 / 最大筋力

Outline of Final Research Achievements

The purpose of this study was to examine whether task failure induced by a sustained submaximal contraction can be explained by force reserve. Specifically, the effects of (1) no recovery period immediately after task failure, (2) the intensity of the sustained submaximal contraction, (3) the effort of the contraction immediately after task failure, and (4) the speed of contraction with voluntary contraction immediately after task failure were determined. It was found that the voluntary contraction force, immediately after task failure, exceeded the force exerted immediately before task failure, despite the above-mentioned factors.

Free Research Field

運動生理学

Academic Significance and Societal Importance of the Research Achievements

決められた大きさの筋力を発揮し続けた場合に生じる疲労困憊の原因は明らかではない。本研究では，疲労困憊直後に余力が残されており，その余力が疲労困憊直後の超過筋力を生んでいる可能性を指摘した。この成果は，疲労困憊を生じさせている原因が，直接的な筋力発揮能力の低下によるものではない可能性を高めるものである。疲労困憊の原因を解明する研究の進展により，疲労困憊を避けるための方策や疲労困憊を遅延させるトレーニング方法の開発にも期待が高まる。