Effects of Transverse Friction Massage on the Electromechanical Delay Components and Fractal Dimension of Surface Electromyography in Quadriceps Muscles

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dc.authoridDemir, Pınar/0000-0002-7644-0075en_US
dc.contributor.authorÖzturk, Necla
dc.contributor.authorBegovic, Haris
dc.contributor.authorDemir, Pınar
dc.contributor.authorCan, Filiz
dc.contributor.authorYagcioğlu, Suha
dc.date.accessioned2024-07-12T21:37:29Z
dc.date.available2024-07-12T21:37:29Z
dc.date.issued2023en_US
dc.department[Belirlenecek]en_US
dc.description.abstractThe purpose of this study was to assess the effects of transverse friction massage (TFM) on the electromechanical delay components and complexity of the surface electromechanical activity in the rectus femoris (RF) and vastus medialis (VM) muscles and to identify possible mechanisms behind TFM-induced alterations in the dynamics of RF and VM activity. Seven female and five male healthy subjects participated in this study. The subjects generated five maximal voluntary isometric contractions (MVICs) consecutively before and after TFM. Meanwhile, electromyography (EMG), mechanomyography (MMG), and force were recorded. The onset times of the recorded signals were detected offline by setting the threshold to three times the SD of the baseline. The delays between EMG and MMG (At(EMG-MMG)), MMG and force (At(MMG-Force)), and EMG and force (At(EMG-Force)) were computed from the detected onsets. The fractal dimension (FD) of the EMG time series was computed using the correlation dimension method. TFM increased At(MMG-Force) and At(EMG-Force) significantly in the RF but decreased At(EMG-MMG) and increased At(MMG-Force) in the VM. TFM decreased the FD in the RF and increased it in the VM. The results imply that TFM decreased the stiffness of both the RF and VM and decreased the duration of the electrochemical processes in the VM. It is proposed that the decrease in EMG complexity in the RF may be associated with the decreased stiffness of the RF, and the increase in EMG complexity in the VM may be associated with the decreased electrochemical processes in this muscle. It is also suggested that the opposite changes in EMG complexity in the RF and VM can be used as a discriminating parameter to search for the effects of an intervention in the quadriceps muscles. The present study also demonstrates how to discriminate the nonlinear dynamics of a complex muscle system from a noisy time series.en_US
dc.description.sponsorshipNecla Özturk, Filiz Can and Pınar Demir wrote this study in memory of Haris Begovic and Suha Yagcioğlu. We are grateful to Haris Begovic and Suha Yagcioğlu for conceptualization of the study and for their contributions to intense discussions. This study woen_US
dc.description.sponsorshipNecla Özturk, Filiz Can and Pınar Demir wrote this study in memory of Haris Begovic and Suha Yagcioğlu. We are grateful to Haris Begovic and Suha Yagcioğlu for conceptualization of the study and for their contributions to intense discussions. This study would not have been possible without the enormous affords of Haris Begovic and the technical support of Suha Yagcioğlu.en_US
dc.identifier.doi10.3390/fractalfract7080620
dc.identifier.issn2504-3110
dc.identifier.issue8en_US
dc.identifier.scopus2-s2.0-85169039578en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.3390/fractalfract7080620
dc.identifier.urihttps://hdl.handle.net/20.500.12415/6811
dc.identifier.volume7en_US
dc.identifier.wosWOS:001055387100001en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoenen_US
dc.publisherMdpien_US
dc.relation.ispartofFractal And Fractionalen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.snmzKY04153
dc.subjectTransverse Friction Massageen_US
dc.subjectElectromyographyen_US
dc.subjectMechanomyographyen_US
dc.subjectCorrelation Dimensionen_US
dc.subjectComplexityen_US
dc.subjectElectromechanical Delayen_US
dc.subjectRectus Femorisen_US
dc.subjectVastus Medialisen_US
dc.titleEffects of Transverse Friction Massage on the Electromechanical Delay Components and Fractal Dimension of Surface Electromyography in Quadriceps Musclesen_US
dc.typeArticle
dspace.entity.typePublication

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