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Changes in Muscle Architecture of Vastus Lateralis Muscle during Fatiguing Contractions
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- SODA Naoki
- Physical Therapy major, Deparment of Rehabilitation, Heisei College of Health Sciences
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- ISHIDA Hiroyasu
- Physical Therapy major, Deparment of Rehabilitation, Heisei College of Health Sciences
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- IKEDO Yasuyo
- Physical Therapy major, Deparment of Rehabilitation, Heisei College of Health Sciences
Bibliographic Information
- Other Title
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- 疲労課題における外側広筋の形態学的変化について ─羽状角,筋厚,筋束長の経時的変化─
- 疲労課題における外側広筋の形態学的変化について : 羽状角,筋厚,筋束長の経時的変化
- ヒロウ カダイ ニ オケル ソトガワコウキン ノ ケイタイガクテキ ヘンカ ニ ツイテ : ウジョウカク,キンコウ,キン ソクチョウ ノ ケイジテキ ヘンカ
- ─羽状角,筋厚,筋束長の経時的変化─
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Description
[Purpose] The purpose of this study was to examine whether vastus lateralis muscle (VL) fascicle length and pennation angle alter during and after sustained submaximal isometric knee extention. [Subjects and Methods] Twelve female subjects performed maximal voluntary knee extensions (MVC) on a Biodex. This task consisted of a sustained submaximal isometric fatiguing contraction (75% MVC) until failure to hold the defined moment. Ultrasound (US) was used to visualize the muscle belly of the VL. [Results] The fascicle length of the VL decreased from 92.9 mm at the beginning to 81.3 mm at the end of fatigue, and the pennation angle increased from12.1°to14.5°. The root mean square (RMS) of the EMG signal of the VL increased signicantly with fatigue. [Conclusion] The results demonstrated that the architectural change of muscles detected using US could potentially provide complementary information for EMG for the muscle fatigue assessment.
Journal
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- Rigakuryoho Kagaku
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Rigakuryoho Kagaku 26 (6), 781-784, 2011
The Society of Physical Therapy Science
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Keywords
Details 詳細情報について
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- CRID
- 1390282679623260160
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- NII Article ID
- 130004432790
- 10031137492
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- NII Book ID
- AN10472896
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- ISSN
- 24342807
- 13411667
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- NDL BIB ID
- 023454908
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL Search
- Crossref
- CiNii Articles
- OpenAIRE
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- Abstract License Flag
- Disallowed