| Project/Area Number |
16K01731
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Sports science
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| Research Institution | Jobu University |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 野球 / 投手 / 球速 / ボールコントロール / 下肢筋力 / 下肢柔軟性 / バランス能力 / ストライド幅 / 股関節柔軟性 / 股関節筋力 / 動的バランス能力 / 投球動作 / 柔軟性 / 股関節 / 下肢伸展パワー / 下肢 / 筋力 / 筋パワー / 疲労 / 体力 / 投球パフォーマンス |
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| Outline of Final Research Achievements |
The purpose of this study was to evaluate the relationships between lower-extremity fitness, pitching motion, and pitching performance in college baseball pitchers. Abduction and adduction strength in both hips were significantly correlated with maximum ball velocity. Stride length during pitch was not significantly correlated with hip abduction range of motion or maximum ball velocity. Moreover, over the course of a series of repetitive throwing motions corresponding to a single complete game, hip abduction and adduction strength were significantly affected by fatigue.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究は，投手の股関節外転・内転筋力（股関節を開いたり，閉じたりする力）が球速と密接な関係をもつとともに，投球数の増加に伴う疲労の影響を受けやすことを明らかにした．それゆえ，投手のトレーニングにおいて，股関節の外転・内転筋力を強化するプログラムが，投球パフォーマンスの維持向上に有効であると推察できる．加えて，投手の障害予防やコンディショニングにおいても，投手の股関節機能は着目すべき体力要素のひとつであると考えられる．
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