Velocity-dependent EMG activity of masseter and sternocleidomastoideus muscles during a ballistic arm thrusting movement

Two experiments were conducted to investigate the functional relationship between the general somatic motor function and the oral motor function. In Experiment 1, we analyzed the relationship between the amount of masseter muscle (MSS) activity and the velocity of a ballistic, ‘karate-do’ arm thrust...

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Bibliographic Details
Published in:Human movement science 2007-02, Vol.26 (1), p.48-67
Main Authors: Kimura, Keisuke, Murakami, Hiroshi, Yamamoto, Morimasa, Yokoyama, Takasi, Morita, Takumi, Ito, Yutaka, Hiraba, Katsunari
Format: Article
Language:English
Subjects:
Adult
Arm - physiology
Ballistic arm movement
Biological and medical sciences
Electromyography
Fundamental and applied biological sciences. Psychology
Humans
Male
Martial Arts
Masseter muscle
Masseter Muscle - physiology
Motor Activity
Movement
Movement velocity
Muscle, Skeletal - physiology
Remote facilitation
Teeth clenching
Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports
Weight Lifting - physiology
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Summary:Two experiments were conducted to investigate the functional relationship between the general somatic motor function and the oral motor function. In Experiment 1, we analyzed the relationship between the amount of masseter muscle (MSS) activity and the velocity of a ballistic, ‘karate-do’ arm thrusting movement (ThrMov). ThrMov velocity was measured from video images taken with a high-speed CCD camera at a frequency of 500Hz. EMGs of MSS and sternocleidomastoideus (SCM) muscles as well as other related muscles were recorded simultaneously with video images in 6 varsity ‘karate-do’ athletes. Pearson’s correlation coefficients were calculated between EMG amplitude and movement velocity. EMG activity of MSS as well as the other muscles increased as a function of ThrMov velocity in all participants, as evidenced by highly significant (p
ISSN:0167-9457
1872-7646
DOI:10.1016/j.humov.2006.08.001