身体運動時のクレンチングに関する研究  [in Japanese] Involuntary Teeth Clenching during Physical Exercise  [in Japanese]

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Author(s)

    • 横山 雄一 YOKOYAMA Yuichi
    • 北海道医療大学歯学部歯科補綴学第1講座 Department of Removable Prosthodontics,Health Sciences University of Hokkaido School of Dentistry

Abstract

Involuntary clenching is common during physical exercise; therefore, the purposeof this study was to elucidate the relationship between stomatognathic function and physical exercise as well as role and mechanism of involuntary teeth clenching during physical exercise.<BR>In 15 healthy, fully dentate males (mean age 26.5±2.1), electromyographic activities from jaw closing (JM), sternocleidomastoid, biceps brachial (BB), and rectus femoral (RF) muscles; mandibular positions; and muscle strength during both isometric elbow flexion and knee extensionexercises were recorded and analyzed.<BR>From the analysis of electromyographic activities and mandibular position, the subjects were divided into two groups, Clenching group (n=9) and Non-clenching group (n=6). The subjects in the Clenching group showed involuntary clenching during the exercise and their mandibular positions were located at the inter-cuspal position. The onset of electromyographic activity of JM was earlier than that of the agonist (BB, RF) in the 7 subjectsof the Clenching group. In the Clenching group, both elbow flexion and knee extension strength with involuntary clenching were lowered when voluntary mouth opening was directed during the exercise.<BR>These results suggested that stomatognathic function and physical exercise had an interdependent relationship and involuntary clenching during physical exercise could be explained by a so-called feedforward mechanism.

Journal

  • Nihon Hotetsu Shika Gakkai Zasshi

    Nihon Hotetsu Shika Gakkai Zasshi 42(1), 90-101, 1998-02-01

    Japan Prosthodontic Society

References:  50

Cited by:  21

Codes

  • NII Article ID (NAID)
    10008168560
  • NII NACSIS-CAT ID (NCID)
    AN00197911
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    03895386
  • Data Source
    CJP  CJPref  J-STAGE 
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