The relation between spectral changes of the myoelectric signal and the intramuscular pressure of human skeletal muscle
| Autor: | P. Herberts, L. Körner, Philip A. Parker, C. Almström, Roland Kadefors |
|---|---|
| Rok vydání: | 1984 |
| Předmět: |
Adult
Male Physiology Electromyography Isometric exercise Submaximal contraction Isometric Contraction Physiology (medical) Pressure Humans Medicine Orthopedics and Sports Medicine Intramuscular pressure medicine.diagnostic_test business.industry Muscles Public Health Environmental and Occupational Health Skeletal muscle General Medicine Anatomy Electrophysiology medicine.anatomical_structure Muscular fatigue Myoelectric signal business Biomedical engineering |
| Zdroj: | European Journal of Applied Physiology and Occupational Physiology. 52:202-206 |
| ISSN: | 1439-6327 0301-5548 |
| DOI: | 10.1007/bf00433393 |
| Popis: | The purpose of the present study was to investigate if the intramuscular pressure generated during an isometric muscle contraction is important for the appearance of EMG spectral changes accompanying localized muscular fatigue. The EMG and intramuscular pressure of the left biceps brachii in eight volunteers were recorded during standardized isometric contractions by means of intramuscular wire electrodes and infusion catheters, respectively. Spectral changes were elicited by a submaximal contraction and the intramuscular pressure at which the induced spectral changes were able to recover was determined. It was found that significant recovery was possible only if the intramuscular pressure dropped below a level of about 2.7 kPa (20 mm Hg). It is concluded that the intramuscular pressure during a sustained isometric contraction is relevant for the generation of fatigue induced spectral changes, and that measurement of the intramuscular pressure makes possible predetermination of whether or not an isometric muscle contraction is liable to result in localized muscular fatigue. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink