Use of electromyography to assess pain in the upper trapezius and lower back muscles within a fatigue protocol
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| Format: | Artículo científico |
| Language: | en |
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Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia
2009
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| author | CT Candotti |
| author_facet | CT Candotti |
| contents | Use of electromyography to assess pain in the upper trapezius and lower back muscles within a fatigue protocol CT Candotti JF Loss M La Torre MO Melo LD Araújo VV Marcks Salud pain fatigue electromyography lower back muscles upper trapezius muscle OBJECTIVE: The aim of this study was to investigate whether muscle fatigue indices obtained using surface electromyography and calculated in the time and frequency domains would be capable of objectively diagnosing pain and discriminating between subjects with and without pain in the upper trapezius muscle and the lower back muscles. METHODS: Forty-seven individuals underwent a muscle fatigue test for thirty-five seconds at 80% of the maximal voluntary contraction (MVC), while EMG and muscle force data were recorded. The RMS value and the median frequency (MF) were calculated within consecutive one-second windows. Linear regression analysis was used to obtain the slope coefficients and the respective y-axis intercept values, which were considered to be localized muscle fatigue indices. RESULTS: In the frequency domain, the slope coefficients were negative for both muscles, while in the time domain, the coefficient for the upper trapezius was positive and the coefficient for the lower back muscles was negative (p<0.01). Significant differences were also found in the frequency domain between subjects with and without pain in the upper trapezius (p<0.01). The subjects with pain had significantly lower force values than the subjects without pain (p<0.05), in both the upper trapezius and the lower back muscles. CONCLUSION: The force values associated with the fatigue indices (MF slope and y-axis intercept) were able to predict the presence of pain in the upper trapezius (p<0.05), but not in the lower back muscles. 2009 artículo científico 1413-3555 https://www.redalyc.org/articulo.oa?id=235016468009 en http://www.redalyc.org/revista.oa?id=2350 Revista Brasileira de Fisioterapia application/pdf Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia Revista Brasileira de Fisioterapia (Brasil) Num.2 Vol.13 |
| format | Artículo científico |
| id | redalyc_235016468009 |
| institution | Redalyc |
| language | en |
| publishDate | 2009 |
| publisher | Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia |
| spellingShingle | Use of electromyography to assess pain in the upper trapezius and lower back muscles within a fatigue protocol CT Candotti Salud pain fatigue electromyography lower back muscles upper trapezius muscle Use of electromyography to assess pain in the upper trapezius and lower back muscles within a fatigue protocol CT Candotti JF Loss M La Torre MO Melo LD Araújo VV Marcks Salud pain fatigue electromyography lower back muscles upper trapezius muscle OBJECTIVE: The aim of this study was to investigate whether muscle fatigue indices obtained using surface electromyography and calculated in the time and frequency domains would be capable of objectively diagnosing pain and discriminating between subjects with and without pain in the upper trapezius muscle and the lower back muscles. METHODS: Forty-seven individuals underwent a muscle fatigue test for thirty-five seconds at 80% of the maximal voluntary contraction (MVC), while EMG and muscle force data were recorded. The RMS value and the median frequency (MF) were calculated within consecutive one-second windows. Linear regression analysis was used to obtain the slope coefficients and the respective y-axis intercept values, which were considered to be localized muscle fatigue indices. RESULTS: In the frequency domain, the slope coefficients were negative for both muscles, while in the time domain, the coefficient for the upper trapezius was positive and the coefficient for the lower back muscles was negative (p<0.01). Significant differences were also found in the frequency domain between subjects with and without pain in the upper trapezius (p<0.01). The subjects with pain had significantly lower force values than the subjects without pain (p<0.05), in both the upper trapezius and the lower back muscles. CONCLUSION: The force values associated with the fatigue indices (MF slope and y-axis intercept) were able to predict the presence of pain in the upper trapezius (p<0.05), but not in the lower back muscles. 2009 artículo científico 1413-3555 https://www.redalyc.org/articulo.oa?id=235016468009 en http://www.redalyc.org/revista.oa?id=2350 Revista Brasileira de Fisioterapia application/pdf Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia Revista Brasileira de Fisioterapia (Brasil) Num.2 Vol.13 |
| title | Use of electromyography to assess pain in the upper trapezius and lower back muscles within a fatigue protocol |
| topic | Salud pain fatigue electromyography lower back muscles upper trapezius muscle |
| url | https://www.redalyc.org/articulo.oa?id=235016468009 |