Publicação
EMG signal processing for the study of localized muscle fatigue—pilot study to explore the applicability of a novel method
| Resumo: | This pilot study aimed to explore a method for characterization of the electromyogram frequency spectrum during a sustained exertion task, performed by the upper limb. Methods: Nine participants underwent an isometric localized muscle fatigue protocol on an isokinetic dynamometer until exhaustion, while monitored with surface electromyography (sEMG) of the shoulder’s external rotators. Firstly, three methods of signal energy analysis based on primer frequency contributors were compared to the energy of the entire spectrum. Secondly, the chosen method of analysis was used to characterize the signal energy at beginning (T1), in the middle (T2) and at the end (T3) of the fatigue protocol and compared to the torque output and the shift in the median frequencies during the trial. Results: There were statistically significant differences between T1 and T3 for signal energy (p < 0.007) and for central frequency of the interval (p = 0.003). Moreover, the isometric peak torque was also different between T1 and T3 (p < 0.001). Overall, there were no differences between the signal energy enclosed in the 40 primer frequency contributors and the analysis of the full spectrum energy; consequently, it was the method of choice. The reported fatigue and the decrease in the produced muscle torque was consistent with fatigue-induced alterations in the electromyogram frequency spectrum. In conclusion, the developed protocol has potential to be considered as an easy-to-use method for EMG-based analysis of isometric muscle exertion until fatigue. Thus, the novelty of the proposed method is to explore, in muscle fatigue, the use of only the main contributors in the frequency domain of the EMG spectrum, avoiding surplus information, that may not represent muscle functioning. However, further studies are needed to investigate the stability of the present findings in a more comprehensive sample. |
|---|---|
| Autores principais: | Rodrigues, Sandra Beatriz |
| Outros Autores: | Faria, Luís Palermo; Monteiro, A.M.; Lima, José; Barbosa, Tiago M.; Duarte, José Alberto |
| Assunto: | Surface electromyography sEMG Frequency spectrum Fast Fourier transformation Fatigue Signal processing Isokinetic dynamometer Research Subject Categories::INTERDISCIPLINARY RESEARCH AREAS::Sports |
| Ano: | 2022 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Instituto Politécnico de Bragança |
| Idioma: | inglês |
| Origem: | Biblioteca Digital do IPB |
| _version_ | 1863850655777554432 |
|---|---|
| author | Rodrigues, Sandra Beatriz |
| author2 | Faria, Luís Palermo Monteiro, A.M. Lima, José Barbosa, Tiago M. Duarte, José Alberto |
| author2_role | author author author author author |
| author_facet | Rodrigues, Sandra Beatriz Faria, Luís Palermo Monteiro, A.M. Lima, José Barbosa, Tiago M. Duarte, José Alberto |
| author_role | author |
| contributor_name_str_mv | Biblioteca Digital do IPB |
| country_str | PT |
| creators_json_str | [{\"Person.name\":\"Rodrigues, Sandra Beatriz\"},{\"Person.name\":\"Faria, Luís Palermo\"},{\"Person.name\":\"Monteiro, A.M.\",\"Person.identifier.orcid\":\"0000-0003-4467-1722\"},{\"Person.name\":\"Lima, José\",\"Person.identifier.orcid\":\"0000-0001-7902-1207\"},{\"Person.name\":\"Barbosa, Tiago M.\",\"Person.identifier.orcid\":\"0000-0001-7071-2116\"},{\"Person.name\":\"Duarte, José Alberto\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | Biblioteca Digital do IPB |
| datacite.creators.creator.creatorName.fl_str_mv | Rodrigues, Sandra Beatriz Faria, Luís Palermo Monteiro, A.M. Lima, José Barbosa, Tiago M. Duarte, José Alberto |
| datacite.date.Accepted.fl_str_mv | 2022-01-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2022-12-06T10:27:41Z |
| datacite.date.embargoed.fl_str_mv | 2022-12-06T10:27:41Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | Surface electromyography sEMG Frequency spectrum Fast Fourier transformation Fatigue Signal processing Isokinetic dynamometer Research Subject Categories::INTERDISCIPLINARY RESEARCH AREAS::Sports |
| datacite.titles.title.fl_str_mv | EMG signal processing for the study of localized muscle fatigue—pilot study to explore the applicability of a novel method |
| dc.contributor.none.fl_str_mv | Biblioteca Digital do IPB |
| dc.creator.none.fl_str_mv | Rodrigues, Sandra Beatriz Faria, Luís Palermo Monteiro, A.M. Lima, José Barbosa, Tiago M. Duarte, José Alberto |
| dc.date.Accepted.fl_str_mv | 2022-01-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2022-12-06T10:27:41Z |
| dc.date.embargoed.fl_str_mv | 2022-12-06T10:27:41Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://hdl.handle.net/10198/26150 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | MDPI |
| dc.rights.cclincense.fl_str_mv | http://creativecommons.org/licenses/by/4.0/ |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | Surface electromyography sEMG Frequency spectrum Fast Fourier transformation Fatigue Signal processing Isokinetic dynamometer Research Subject Categories::INTERDISCIPLINARY RESEARCH AREAS::Sports |
| dc.title.fl_str_mv | EMG signal processing for the study of localized muscle fatigue—pilot study to explore the applicability of a novel method |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | This pilot study aimed to explore a method for characterization of the electromyogram frequency spectrum during a sustained exertion task, performed by the upper limb. Methods: Nine participants underwent an isometric localized muscle fatigue protocol on an isokinetic dynamometer until exhaustion, while monitored with surface electromyography (sEMG) of the shoulder’s external rotators. Firstly, three methods of signal energy analysis based on primer frequency contributors were compared to the energy of the entire spectrum. Secondly, the chosen method of analysis was used to characterize the signal energy at beginning (T1), in the middle (T2) and at the end (T3) of the fatigue protocol and compared to the torque output and the shift in the median frequencies during the trial. Results: There were statistically significant differences between T1 and T3 for signal energy (p < 0.007) and for central frequency of the interval (p = 0.003). Moreover, the isometric peak torque was also different between T1 and T3 (p < 0.001). Overall, there were no differences between the signal energy enclosed in the 40 primer frequency contributors and the analysis of the full spectrum energy; consequently, it was the method of choice. The reported fatigue and the decrease in the produced muscle torque was consistent with fatigue-induced alterations in the electromyogram frequency spectrum. In conclusion, the developed protocol has potential to be considered as an easy-to-use method for EMG-based analysis of isometric muscle exertion until fatigue. Thus, the novelty of the proposed method is to explore, in muscle fatigue, the use of only the main contributors in the frequency domain of the EMG spectrum, avoiding surplus information, that may not represent muscle functioning. However, further studies are needed to investigate the stability of the present findings in a more comprehensive sample. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | article |
| fulltext.url.fl_str_mv | https://bibliotecadigital.ipb.pt/bitstreams/e889495f-9625-4ac8-abbd-5008926578de/download |
| funding.funder.alternateName_str_mv | FCT FCT |
| funding.funder.identifier_str_mv | http://doi.org/10.13039/501100001871 http://doi.org/10.13039/501100001871 |
| funding.funder.name_str_mv | Fundação para a Ciência e a Tecnologia Fundação para a Ciência e a Tecnologia |
| funding.name_str_mv | 6817 - DCRRNI ID 6817 - DCRRNI ID |
| id | ipb_a8e5aa5cd1da49d720d8b65247a2d3cb |
| identifier.url.fl_str_mv | http://hdl.handle.net/10198/26150 |
| instacron_str | ipb |
| institution | Instituto Politécnico de Bragança |
| instname_str | Instituto Politécnico de Bragança |
| language | eng |
| network_acronym_str | ipb |
| network_name_str | Biblioteca Digital do IPB |
| oai_identifier_str | oai:bibliotecadigital.ipb.pt:10198/26150 |
| organization_str_mv | urn:organizationAcronym:ipb |
| person_str_mv | Rodrigues, Sandra Beatriz Faria, Luís Palermo Monteiro, A.M. Monteiro, A.M. https://www.ciencia-id.pt/C41C-6CCD-A1F0 C41C-6CCD-A1F0 http://orcid.org/0000-0003-4467-1722 0000-0003-4467-1722 Lima, José Lima, José https://www.ciencia-id.pt/6016-C902-86A9 6016-C902-86A9 http://orcid.org/0000-0001-7902-1207 0000-0001-7902-1207 Barbosa, Tiago M. Barbosa, Tiago M. https://www.ciencia-id.pt/8B11-BDC4-F6FF 8B11-BDC4-F6FF http://orcid.org/0000-0001-7071-2116 0000-0001-7071-2116 Duarte, José Alberto |
| publishDate | 2022 |
| publisher.none.fl_str_mv | MDPI |
| reponame_str | Biblioteca Digital do IPB |
| repository_id_str | urn:repositoryAcronym:ipb |
| service_str_mv | urn:repositoryAcronym:ipb |
| spelling | engMDPIpt_PTThis pilot study aimed to explore a method for characterization of the electromyogram frequency spectrum during a sustained exertion task, performed by the upper limb. Methods: Nine participants underwent an isometric localized muscle fatigue protocol on an isokinetic dynamometer until exhaustion, while monitored with surface electromyography (sEMG) of the shoulder’s external rotators. Firstly, three methods of signal energy analysis based on primer frequency contributors were compared to the energy of the entire spectrum. Secondly, the chosen method of analysis was used to characterize the signal energy at beginning (T1), in the middle (T2) and at the end (T3) of the fatigue protocol and compared to the torque output and the shift in the median frequencies during the trial. Results: There were statistically significant differences between T1 and T3 for signal energy (p < 0.007) and for central frequency of the interval (p = 0.003). Moreover, the isometric peak torque was also different between T1 and T3 (p < 0.001). Overall, there were no differences between the signal energy enclosed in the 40 primer frequency contributors and the analysis of the full spectrum energy; consequently, it was the method of choice. The reported fatigue and the decrease in the produced muscle torque was consistent with fatigue-induced alterations in the electromyogram frequency spectrum. In conclusion, the developed protocol has potential to be considered as an easy-to-use method for EMG-based analysis of isometric muscle exertion until fatigue. Thus, the novelty of the proposed method is to explore, in muscle fatigue, the use of only the main contributors in the frequency domain of the EMG spectrum, avoiding surplus information, that may not represent muscle functioning. However, further studies are needed to investigate the stability of the present findings in a more comprehensive sample.application/pdfpt_PTEMG signal processing for the study of localized muscle fatigue—pilot study to explore the applicability of a novel methodRodrigues, Sandra BeatrizFaria, Luís PalermoPersonalMonteiro, A.M.DSpacehttp://dspace.org/items/5b5d8601-e683-42d5-a1b5-c8e29a4e0a41DSpacehttp://dspace.org/items/5b5d8601-e683-42d5-a1b5-c8e29a4e0a41MonteiroAntónio M.Ciência IDhttps://www.ciencia-id.ptC41C-6CCD-A1F0ORCIDhttp://orcid.org0000-0003-4467-1722PersonalLima, JoséDSpacehttp://dspace.org/items/d88c2b2a-efc2-48ef-b1fd-1145475e0055DSpacehttp://dspace.org/items/d88c2b2a-efc2-48ef-b1fd-1145475e0055LimaJoséCiência IDhttps://www.ciencia-id.pt6016-C902-86A9ORCIDhttp://orcid.org0000-0001-7902-1207Researcher IDhttps://www.researcherid.comL-3370-2014Scopus Author IDhttps://www.scopus.com55851941311PersonalBarbosa, Tiago M.DSpacehttp://dspace.org/items/941a6f14-cfba-458a-a2e3-0cbd1846cd42DSpacehttp://dspace.org/items/941a6f14-cfba-458a-a2e3-0cbd1846cd42BarbosaTiago M.Ciência IDhttps://www.ciencia-id.pt8B11-BDC4-F6FFORCIDhttp://orcid.org0000-0001-7071-2116Scopus Author IDhttps://www.scopus.com10044856400Duarte, José AlbertoHostingInstitutionOrganizationalBiblioteca Digital do IPBe-mailmailto:dspace@ipb.ptdspace@ipb.ptDOIIsPartOf10.3390/ijerph1920132702022-12-06T10:27:41Z20222022-01-01T00:00:00ZHandlehttp://hdl.handle.net/10198/26150http://purl.org/coar/access_right/c_abf2open accessSurface electromyographysEMGFrequency spectrumFast Fourier transformationFatigueSignal processingIsokinetic dynamometerResearch Subject Categories::INTERDISCIPLINARY RESEARCH AREAS::Sports749034 bytesFundação para a Ciência e a TecnologiaResearch Centre in Digitalization and Intelligent Robotics6817 - DCRRNI IDCrossref Funder IDhttp://doi.org/10.13039/501100001871Fundação para a Ciência e a TecnologiaResearch Centre in Digitalization and Intelligent Robotics6817 - DCRRNI IDCrossref Funder IDhttp://doi.org/10.13039/501100001871literaturehttp://purl.org/coar/resource_type/c_6501journal article2022http://creativecommons.org/licenses/by/4.0/http://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://bibliotecadigital.ipb.pt/bitstreams/e889495f-9625-4ac8-abbd-5008926578de/downloadInternational Journal of Environmental Research and Public Health19111 |
| spellingShingle | EMG signal processing for the study of localized muscle fatigue—pilot study to explore the applicability of a novel method Rodrigues, Sandra Beatriz Surface electromyography sEMG Frequency spectrum Fast Fourier transformation Fatigue Signal processing Isokinetic dynamometer Research Subject Categories::INTERDISCIPLINARY RESEARCH AREAS::Sports |
| subject.fl_str_mv | Surface electromyography sEMG Frequency spectrum Fast Fourier transformation Fatigue Signal processing Isokinetic dynamometer Research Subject Categories::INTERDISCIPLINARY RESEARCH AREAS::Sports |
| title | EMG signal processing for the study of localized muscle fatigue—pilot study to explore the applicability of a novel method |
| title_full | EMG signal processing for the study of localized muscle fatigue—pilot study to explore the applicability of a novel method |
| title_fullStr | EMG signal processing for the study of localized muscle fatigue—pilot study to explore the applicability of a novel method |
| title_full_unstemmed | EMG signal processing for the study of localized muscle fatigue—pilot study to explore the applicability of a novel method |
| title_short | EMG signal processing for the study of localized muscle fatigue—pilot study to explore the applicability of a novel method |
| title_sort | EMG signal processing for the study of localized muscle fatigue—pilot study to explore the applicability of a novel method |
| topic | Surface electromyography sEMG Frequency spectrum Fast Fourier transformation Fatigue Signal processing Isokinetic dynamometer Research Subject Categories::INTERDISCIPLINARY RESEARCH AREAS::Sports |
| topic_facet | Surface electromyography sEMG Frequency spectrum Fast Fourier transformation Fatigue Signal processing Isokinetic dynamometer Research Subject Categories::INTERDISCIPLINARY RESEARCH AREAS::Sports |
| url | http://hdl.handle.net/10198/26150 |
| visible | 1 |