2020 Fiscal Year Final Research Report
The effect of jaw clenching on sporting activity
Project/Area Number |
19K19964
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Research Category |
Grant-in-Aid for Early-Career Scientists
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Allocation Type | Multi-year Fund |
Review Section |
Basic Section 59020:Sports sciences-related
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Research Institution | Osaka Dental University |
Principal Investigator |
Tanaka Yuto 大阪歯科大学, 歯学部附属病院, 講師 (10711038)
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Project Period (FY) |
2019-04-01 – 2021-03-31
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Keywords | 噛み締め / 予測的姿勢制御 |
Outline of Final Research Achievements |
This study aimed to investigate the effect of jaw clenching on anticipatory postural adjustments (APAs) and reactive postural adjustments (RPAs). Jaw clenching resulted in an earlier onset of APAs and a greater amplitude of trunk and lower limb EMG activities in the APAs and RPAs. There were no differences in COM and COP displacements after the perturbation. Jaw clenching is effective for enhancing APAs and RPAs, although it may not increase postural stability following predictable external perturbation in healthy adults. Our research, which focuses on postural stability, may be important for therapists and researchers working on improving the postural stability in individuals with pathologies of the central nervous system.
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Free Research Field |
スポーツ歯学
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Academic Significance and Societal Importance of the Research Achievements |
これまで同研究分野では、噛み締めは体幹のスポーツパフォーマンスの向上や頭頚部外傷予防に効果的だという研究が多くなされてきているが、これら研究では閉口筋の活動量が増加すれば噛み締めているとして評価されてきたため、噛み締めの効果が誤って解釈されていた可能性があった。本研究では、咬合接触を伴わず開閉咬筋の同時収縮により得られる下顎の固定と、咬頭嵌合位での噛み締めにより得られる下顎の固定とを明確に区別した。一方で本研究により、スポーツ時の下顎位の実態あるいは噛み締めの効果の確からしさが向上したと考える。
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