Influence of muscle stiffness and stretching effect on exercise-induced muscle damage
| Project/Area Number |
19K19985
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 59020:Sports sciences-related
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| Research Institution | Waseda University (2021-2022)
Shibaura Institute of Technology (2019-2020) |
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Principal Investigator |
Hirata Kosuke 早稲田大学, スポーツ科学学術院, 助教 (00835746)
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| Project Period (FY) |
2019-04-01 – 2023-03-31
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| Project Status |
Completed (Fiscal Year 2022)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 運動誘発性筋損傷 / 筋痛 / ハムストリング / スティフネス / 柔軟性 / ストレッチング / 筋損傷 / 剛性率 / 超音波 |
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| Outline of Research at the Start |
激しい身体運動を行うと，筋肉痛を伴う筋損傷が生じる．この運動誘発性筋損傷は傷害リスクを増大させるため，その影響因子の特定や効果的な軽減方法が求められている．そこで本研究は，運動誘発性筋損傷の程度に筋の硬さが及ぼす影響，および，運動誘発性筋損傷を軽減する効果的なストレッチング方法を考案することを目的とする．本研究により運動誘発性筋損傷の軽減方法が確立されれば，傷害リスク低減，運動継続の一助となると考えられ，健康寿命の増加，競技力向上に繋がることが期待される．
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| Outline of Final Research Achievements |
Twenty young males performed 100 eccentric knee flexions with maximal effort. After the exercise, decrease in isometric knee flexion torque, increase in muscle soreness, and increase in semitendinosus stiffness were obserbed. Increase in semitendinosus stiffness was significantly correlated with decrease in knee flexion torque. These results suggest that semitendinosus is the most susceptible muscle to exercise-induced muscle damage among hamstring. Hamstring stiffness measured before exercise was not significantly correlated with changes in knee flexion torque or muscle soreness. Acute improvement in joint flexibility by static stretching did not affect extent of exercise-induced muscle damage.
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| Academic Significance and Societal Importance of the Research Achievements |
激しい運動による筋痛の発生は身近な現象であり，筋の損傷に由来する．本研究により，ハムストリングの中で半腱様筋が激しい運動により損傷しやすいことが示唆された．半腱様筋に対する運動後のケアの徹底により，運動誘発性筋損傷からの早期回復が期待される．また，半腱様筋に対する何らかのトレーニングにより運動誘発性筋損傷を低減させることができるかもしれない．スポーツ競技者のみならず，多くの人にとって有益な知見を獲得できた．
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Report
(5 results)
Research Products
(33 results)
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[Journal Article] Female Athletes Genetically Susceptible to Fatigue Fracture Are Resistant to Muscle Injury2021
Author(s)
Miyamoto-Mikami E, Kumagai H, Tanisawa K, Taga Y, Hirata K, Kikuchi N, Kamiya N, Kawakami R, Midorikawa T, Kawamura T, Kakigi R, Natsume T, Zempo H, Suzuki K, Kohmura Y, Mizuno K, Torii S, Sakamoto S, Oka K, Higuchi M, Naito H, Miyamoto N, Fuku N
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Journal Title
Medicine & Science in Sports & Exercise
Volume: Publish Ahead of Print
Issue: 9
Pages: 0-0
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] COL5A1 rs12722 polymorphism is not associated with passive muscle stiffness and sports-related muscle injury in Japanese athletes.2019
Author(s)
Miyamoto-Mikami E, Miyamoto N, Kumagai H, Hirata K, Kikuchi N, Zempo H, Kimura N, Kamiya N, Kanehisa H, Naito H, Fuku N.
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Journal Title
BMC Medical Genetics.
Volume: 20
Issue: 1
Pages: 192-192
DOI
Related Report
Peer Reviewed / Open Access
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