1. Colour Doppler sonographic analysis of blood-flow velocity in the human facial artery and changes in masseter muscle thickness during low-level static contraction
- Author
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Shigemitsu Sakuma, Eiichiro Ariji, Akitoshi Kawamata, Yoshiko Ariji, Yutaka Ito, Kenichi Kurita, Masahiko Toyama, and Yasuo Kimura
- Subjects
Adult ,Male ,Contraction (grammar) ,Adolescent ,Transducers ,Pain ,Facial artery ,Isometric exercise ,Electromyography ,Statistics, Nonparametric ,Masseter muscle ,medicine.artery ,Medicine ,Edema ,Humans ,Ultrasonography, Doppler, Color ,skin and connective tissue diseases ,General Dentistry ,Muscle fatigue ,medicine.diagnostic_test ,business.industry ,Masseter Muscle ,Cell Biology ,General Medicine ,Anatomy ,Blood flow ,Arteries ,Otorhinolaryngology ,Regional Blood Flow ,Face ,Muscle Fatigue ,Female ,sense organs ,medicine.symptom ,business ,Blood Flow Velocity ,Muscle contraction ,Follow-Up Studies ,Muscle Contraction - Abstract
Muscle oedema, which can be seen as a thickness increment by ultrasonography, is important in provoking pain and fatigue during low-level contraction. Although oedema is related to the balance of inflow and outflow of blood, there are no data on the correlation between muscle thickness change and blood-flow. Blood-flow velocities in the facial artery and the muscle thickness changes were measured by colour Doppler ultrasonography in 30 healthy volunteers during 20 min contraction with 10% of maximum force. Thickness and velocity changes both reached a peak in the initial phase of contraction. The initial change of thickness did not correlate with the velocity in the facial artery, while those immediately after exercise showed a high correlation. The velocity changes in the facial artery might depend on both the general response to contraction and local metabolic or mechanical factors in the contracted masseters.
- Published
- 2001