Myofascial trigger points alter the modular control during the execution of a reaching task: a pilot study
Autor: | Tommaso Geri, Marco Testa, Anna Di Marco, Leonardo Gizzi |
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Rok vydání: | 2019 |
Předmět: |
Adult
Male Shoulder Skeletal muscle lcsh:Medicine Pilot Projects Electromyography Biology Article Task (project management) 03 medical and health sciences 0302 clinical medicine 030202 anesthesiology medicine Humans Muscle activity Muscle Skeletal lcsh:Science Control (linguistics) Pain Measurement Spinal cord Multidisciplinary medicine.diagnostic_test business.industry lcsh:R Trigger Points Motor control Reciprocal inhibition Modular design Cross-Sectional Studies medicine.anatomical_structure Arm Shoulder girdle Female lcsh:Q business Biomedical engineering Neuroscience 030217 neurology & neurosurgery |
Zdroj: | Scientific Reports, Vol 9, Iss 1, Pp 1-13 (2019) Scientific Reports |
ISSN: | 2045-2322 |
Popis: | Myofascial trigger points (TP) constitute a conundrum in research and clinical practice as their etiopathogenesis is debated. Several studies investigating one or few muscles have shown that both active and latent TP causes an increased muscle activity, however the influence of TP on modular motor control during a reaching task is still unclear. Electromyographic signals, recorded from the muscles of the shoulder girdle and upper arm during a reaching task, were decomposed with Non-Negative Matrix Factorization algorithm. The extracted matrices of motor modules and activation signals were used to label the muscles condition as dominant or non-dominant. The presence of latent and active TP was detected in each muscle with manual examination. Despite a similar muscle activity was observed, we found that muscles with active TP had increased weighting coefficients when labeled in the dominant condition. No influences were found when muscles were in the non-dominant condition. These findings suggest that TP altered the motor control without co-contraction patterns. As a preliminary evidence, the present results suggest that the increased weighting coefficients in presence of TPs are associated with an alteration of the modular motor control without affecting the dimensionality of motor modules for each individual and reciprocal inhibition. |
Databáze: | OpenAIRE |
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