Quadriceps neuromuscular function in women with patellofemoral pain: Influences of the type of the task and the level of pain
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1371/journal.pone.0205553 http://hdl.handle.net/11449/184927 |
Resumo: | The present study aimed at investigating whether the neuromuscular system behaves differently (in terms of force and muscle activity generation) as a function of the task being performed (i.e. maximal voluntary efforts vs stair negotiation) and the presence of patellofemoral pain (PFP) and possible influences of pain intensity. Thirty-eight women with (n = 19) and without PFP (n = 19) had their knee strength (extension joint torque) measured during maximal voluntary isometric contractions (MVIC) and electromyography (EMG) data recorded during both MVIC and stair ascent tasks, which were performed before and after a loading protocol designed to exacerbate pain symptoms. Women with PFP displayed lower levels of vastus medialis (p = 0.002) and vastus lateralis (p = 0.032) EMG activation during MVIC assessments. Conversely, the PFP group showed higher levels of vastus medialis muscle activity during stair climbing (p = 0.007), which happened exclusively after the loading protocol. Similarly, women with PFP displayed lower knee extensor torque only during the MVIC tests performed after the loading protocol, which was moderately correlated with the increase in self-reported pain (p = 0.041, r = 0.37), whereas the changes in EMG activity during stair ascent were not correlated with changes in pain intensity (p = 0.215, r = 0.12). These results suggest that, in comparison to pain-free controls, women with PFP display lower levels of quadriceps EMG activation during maximal contractions, but higher activation during dynamic tasks (stair ascent). In addition, the moderate association between the decrease in knee extensor torque and increase in self-reported pain indicates that care should be taken by clinicians during quadriceps strength evaluation in women with PFP, as misleading outcomes may emerge if the intensity of knee pain is not considered during screening. Additionally, rehabilitation strategies should focus on both restoring neuromuscular control and increasing muscle strength. |
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Quadriceps neuromuscular function in women with patellofemoral pain: Influences of the type of the task and the level of painThe present study aimed at investigating whether the neuromuscular system behaves differently (in terms of force and muscle activity generation) as a function of the task being performed (i.e. maximal voluntary efforts vs stair negotiation) and the presence of patellofemoral pain (PFP) and possible influences of pain intensity. Thirty-eight women with (n = 19) and without PFP (n = 19) had their knee strength (extension joint torque) measured during maximal voluntary isometric contractions (MVIC) and electromyography (EMG) data recorded during both MVIC and stair ascent tasks, which were performed before and after a loading protocol designed to exacerbate pain symptoms. Women with PFP displayed lower levels of vastus medialis (p = 0.002) and vastus lateralis (p = 0.032) EMG activation during MVIC assessments. Conversely, the PFP group showed higher levels of vastus medialis muscle activity during stair climbing (p = 0.007), which happened exclusively after the loading protocol. Similarly, women with PFP displayed lower knee extensor torque only during the MVIC tests performed after the loading protocol, which was moderately correlated with the increase in self-reported pain (p = 0.041, r = 0.37), whereas the changes in EMG activity during stair ascent were not correlated with changes in pain intensity (p = 0.215, r = 0.12). These results suggest that, in comparison to pain-free controls, women with PFP display lower levels of quadriceps EMG activation during maximal contractions, but higher activation during dynamic tasks (stair ascent). In addition, the moderate association between the decrease in knee extensor torque and increase in self-reported pain indicates that care should be taken by clinicians during quadriceps strength evaluation in women with PFP, as misleading outcomes may emerge if the intensity of knee pain is not considered during screening. Additionally, rehabilitation strategies should focus on both restoring neuromuscular control and increasing muscle strength.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Sao Paulo State Univ, Sch Sci & Technol, Phys Therapy Dept, Presidente Prudente, SP, BrazilState Univ West Parana, Dept Phys Therapy, Res Lab Human Movement, Cascavel, Parana, BrazilUniv Sao Paulo, Sch Arts Sci & Humanities, Sao Paulo, BrazilSao Paulo State Univ, Sch Sci & Technol, Phys Therapy Dept, Presidente Prudente, SP, BrazilPublic Library ScienceUniversidade Estadual Paulista (Unesp)State Univ West ParanaUniversidade de São Paulo (USP)Briani, Ronaldo Valdir [UNESP]Silva, Danilo De Oliveira [UNESP]Floride, Carolina SilvaAragao, Fernando AmancioAlbuquerque, Carlos Eduardo deMagalhaes, Fernando HenriqueAzevedo, Fabio Micolis de [UNESP]2019-10-04T12:31:08Z2019-10-04T12:31:08Z2018-10-10info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article16http://dx.doi.org/10.1371/journal.pone.0205553Plos One. San Francisco: Public Library Science, v. 13, n. 10, 16 p., 2018.1932-6203http://hdl.handle.net/11449/18492710.1371/journal.pone.0205553WOS:000446921100106Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPlos Oneinfo:eu-repo/semantics/openAccess2024-06-18T18:44:01Zoai:repositorio.unesp.br:11449/184927Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:46:40.173664Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Quadriceps neuromuscular function in women with patellofemoral pain: Influences of the type of the task and the level of pain |
title |
Quadriceps neuromuscular function in women with patellofemoral pain: Influences of the type of the task and the level of pain |
spellingShingle |
Quadriceps neuromuscular function in women with patellofemoral pain: Influences of the type of the task and the level of pain Briani, Ronaldo Valdir [UNESP] |
title_short |
Quadriceps neuromuscular function in women with patellofemoral pain: Influences of the type of the task and the level of pain |
title_full |
Quadriceps neuromuscular function in women with patellofemoral pain: Influences of the type of the task and the level of pain |
title_fullStr |
Quadriceps neuromuscular function in women with patellofemoral pain: Influences of the type of the task and the level of pain |
title_full_unstemmed |
Quadriceps neuromuscular function in women with patellofemoral pain: Influences of the type of the task and the level of pain |
title_sort |
Quadriceps neuromuscular function in women with patellofemoral pain: Influences of the type of the task and the level of pain |
author |
Briani, Ronaldo Valdir [UNESP] |
author_facet |
Briani, Ronaldo Valdir [UNESP] Silva, Danilo De Oliveira [UNESP] Floride, Carolina Silva Aragao, Fernando Amancio Albuquerque, Carlos Eduardo de Magalhaes, Fernando Henrique Azevedo, Fabio Micolis de [UNESP] |
author_role |
author |
author2 |
Silva, Danilo De Oliveira [UNESP] Floride, Carolina Silva Aragao, Fernando Amancio Albuquerque, Carlos Eduardo de Magalhaes, Fernando Henrique Azevedo, Fabio Micolis de [UNESP] |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) State Univ West Parana Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Briani, Ronaldo Valdir [UNESP] Silva, Danilo De Oliveira [UNESP] Floride, Carolina Silva Aragao, Fernando Amancio Albuquerque, Carlos Eduardo de Magalhaes, Fernando Henrique Azevedo, Fabio Micolis de [UNESP] |
description |
The present study aimed at investigating whether the neuromuscular system behaves differently (in terms of force and muscle activity generation) as a function of the task being performed (i.e. maximal voluntary efforts vs stair negotiation) and the presence of patellofemoral pain (PFP) and possible influences of pain intensity. Thirty-eight women with (n = 19) and without PFP (n = 19) had their knee strength (extension joint torque) measured during maximal voluntary isometric contractions (MVIC) and electromyography (EMG) data recorded during both MVIC and stair ascent tasks, which were performed before and after a loading protocol designed to exacerbate pain symptoms. Women with PFP displayed lower levels of vastus medialis (p = 0.002) and vastus lateralis (p = 0.032) EMG activation during MVIC assessments. Conversely, the PFP group showed higher levels of vastus medialis muscle activity during stair climbing (p = 0.007), which happened exclusively after the loading protocol. Similarly, women with PFP displayed lower knee extensor torque only during the MVIC tests performed after the loading protocol, which was moderately correlated with the increase in self-reported pain (p = 0.041, r = 0.37), whereas the changes in EMG activity during stair ascent were not correlated with changes in pain intensity (p = 0.215, r = 0.12). These results suggest that, in comparison to pain-free controls, women with PFP display lower levels of quadriceps EMG activation during maximal contractions, but higher activation during dynamic tasks (stair ascent). In addition, the moderate association between the decrease in knee extensor torque and increase in self-reported pain indicates that care should be taken by clinicians during quadriceps strength evaluation in women with PFP, as misleading outcomes may emerge if the intensity of knee pain is not considered during screening. Additionally, rehabilitation strategies should focus on both restoring neuromuscular control and increasing muscle strength. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-10-10 2019-10-04T12:31:08Z 2019-10-04T12:31:08Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1371/journal.pone.0205553 Plos One. San Francisco: Public Library Science, v. 13, n. 10, 16 p., 2018. 1932-6203 http://hdl.handle.net/11449/184927 10.1371/journal.pone.0205553 WOS:000446921100106 |
url |
http://dx.doi.org/10.1371/journal.pone.0205553 http://hdl.handle.net/11449/184927 |
identifier_str_mv |
Plos One. San Francisco: Public Library Science, v. 13, n. 10, 16 p., 2018. 1932-6203 10.1371/journal.pone.0205553 WOS:000446921100106 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Plos One |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
16 |
dc.publisher.none.fl_str_mv |
Public Library Science |
publisher.none.fl_str_mv |
Public Library Science |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808128856161255424 |