Differences in muscle strength after ACL reconstruction do not influence cardiorespiratory responses to isometabolic exercise
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNIFESP |
Texto Completo: | http://repositorio.unifesp.br/handle/11600/8382 http://dx.doi.org/10.1590/S1413-35552012005000153 |
Resumo: | Objectives: To investigate whether the muscle strength decrease that follows anterior cruciate ligament (ACL) reconstruction would lead to different cardiorespiratory adjustments during dynamic exercise.Method: Eighteen active male subjects were submitted to isokinetic evaluation of knee flexor and extensor muscles four months after ACL surgery. Thigh circumference was also measured and an incremental unilateral cardiopulmonary exercise test was performed separately for both involved and uninvolved lower limbs in order to compare heart rate, oxygen consumption, minute ventilation, and ventilatory pattern (breath rate, tidal volume, inspiratory time, expiratory time, tidal volume/inspiratory time) at three different workloads (moderate, anaerobic threshold, and maximal).Results:There was a significant difference between isokinetic extensor peak torque measured in the involved (116.5±29.1 Nm) and uninvolved (220.8±40.4 Nm) limbs, p=0.000. Isokinetic flexor peak torque was also lower in the involved limb than in the uninvolved limb (107.8±15.4 and 132.5±26.3 Nm, p=0.004, respectively). Lower values were also found in involved thigh circumference as compared with uninvolved limb (46.9±4.3 and 48.5±3.9 cm, p=0.005, respectively). No differences were found between the lower limbs in any of the variables of the incremental cardiopulmonary tests at all exercise intensities.Conclusions: Our findings indicate that, four months after ACL surgery, there is a significant deficit in isokinetic strength in the involved limb, but these differences in muscle strength requirement do not produce differences in the cardiorespiratory adjustments to exercise. Based on the hypotheses from the literature which explain the differences in the physiological responses to exercise for different muscle masses, we can deduce that, after 4 months of a rehabilitation program after an ACL reconstruction, individuals probably do not present differences in muscle oxidative and peripheral perfusion capacities that could elicit higher levels of peripheral cardiorepiratory stimulus during exercise. |
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Andrade, Marilia dos Santos [UNIFESP]Lira, Claudio Andre Barbosa deVancini, Rodrigo Luiz [UNIFESP]Nakamoto, Fernanda Patti [UNIFESP]Cohen, Moises [UNIFESP]Silva, Antonio Carlos da [UNIFESP]Universidade Federal de São Paulo (UNIFESP)Universidade Federal de Goiás Faculty of Physical Education Department of Human and Exercise PhysiologyUniversidade Federal do Espírito Santo Center for Physical Education and Sport2015-06-14T13:47:06Z2015-06-14T13:47:06Z2014-05-16Brazilian Journal of Physical Therapy. Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia , v. 18, n. 2, p. 144-151, 2014.1413-3555http://repositorio.unifesp.br/handle/11600/8382http://dx.doi.org/10.1590/S1413-35552012005000153S1413-35552014000200144.pdfS1413-3555201400020014410.1590/S1413-35552012005000153WOS:000337944500006Objectives: To investigate whether the muscle strength decrease that follows anterior cruciate ligament (ACL) reconstruction would lead to different cardiorespiratory adjustments during dynamic exercise.Method: Eighteen active male subjects were submitted to isokinetic evaluation of knee flexor and extensor muscles four months after ACL surgery. Thigh circumference was also measured and an incremental unilateral cardiopulmonary exercise test was performed separately for both involved and uninvolved lower limbs in order to compare heart rate, oxygen consumption, minute ventilation, and ventilatory pattern (breath rate, tidal volume, inspiratory time, expiratory time, tidal volume/inspiratory time) at three different workloads (moderate, anaerobic threshold, and maximal).Results:There was a significant difference between isokinetic extensor peak torque measured in the involved (116.5±29.1 Nm) and uninvolved (220.8±40.4 Nm) limbs, p=0.000. Isokinetic flexor peak torque was also lower in the involved limb than in the uninvolved limb (107.8±15.4 and 132.5±26.3 Nm, p=0.004, respectively). Lower values were also found in involved thigh circumference as compared with uninvolved limb (46.9±4.3 and 48.5±3.9 cm, p=0.005, respectively). No differences were found between the lower limbs in any of the variables of the incremental cardiopulmonary tests at all exercise intensities.Conclusions: Our findings indicate that, four months after ACL surgery, there is a significant deficit in isokinetic strength in the involved limb, but these differences in muscle strength requirement do not produce differences in the cardiorespiratory adjustments to exercise. Based on the hypotheses from the literature which explain the differences in the physiological responses to exercise for different muscle masses, we can deduce that, after 4 months of a rehabilitation program after an ACL reconstruction, individuals probably do not present differences in muscle oxidative and peripheral perfusion capacities that could elicit higher levels of peripheral cardiorepiratory stimulus during exercise.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Universidade Federal de São Paulo (UNIFESP) Department of PhysiologyUniversidade Federal de Goiás Faculty of Physical Education Department of Human and Exercise PhysiologyUniversidade Federal do Espírito Santo Center for Physical Education and SportUniversidade Federal de São Paulo (UNIFESP) Department of Orthopedics and TraumatologyUNIFESP, Department of PhysiologyUNIFESP, Department of Orthopedics and TraumatologyFAPESP: 99/07746-9SciELO144-151engAssociação Brasileira de Pesquisa e Pós-Graduação em FisioterapiaBrazilian Journal of Physical Therapyrehabilitationanterior cruciate ligamentisokinetic testingphysical therapyoxygen uptakeventilatory responseDifferences in muscle strength after ACL reconstruction do not influence cardiorespiratory responses to isometabolic exerciseinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UNIFESPinstname:Universidade Federal de São Paulo (UNIFESP)instacron:UNIFESPORIGINALS1413-35552014000200144.pdfapplication/pdf709535${dspace.ui.url}/bitstream/11600/8382/1/S1413-35552014000200144.pdfae8f1b31e5822f3ae420124ab7ecaa83MD51open accessTEXTS1413-35552014000200144.pdf.txtS1413-35552014000200144.pdf.txtExtracted texttext/plain37331${dspace.ui.url}/bitstream/11600/8382/21/S1413-35552014000200144.pdf.txtb7b0ef6c17c59150fe5ebeb0154fab28MD521open accessTHUMBNAILS1413-35552014000200144.pdf.jpgS1413-35552014000200144.pdf.jpgIM Thumbnailimage/jpeg7219${dspace.ui.url}/bitstream/11600/8382/23/S1413-35552014000200144.pdf.jpg159dec580853a50208fb6465a94b712bMD523open access11600/83822023-06-05 19:22:27.314open accessoai:repositorio.unifesp.br:11600/8382Repositório InstitucionalPUBhttp://www.repositorio.unifesp.br/oai/requestopendoar:34652023-06-05T22:22:27Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP)false |
dc.title.en.fl_str_mv |
Differences in muscle strength after ACL reconstruction do not influence cardiorespiratory responses to isometabolic exercise |
title |
Differences in muscle strength after ACL reconstruction do not influence cardiorespiratory responses to isometabolic exercise |
spellingShingle |
Differences in muscle strength after ACL reconstruction do not influence cardiorespiratory responses to isometabolic exercise Andrade, Marilia dos Santos [UNIFESP] rehabilitation anterior cruciate ligament isokinetic testing physical therapy oxygen uptake ventilatory response |
title_short |
Differences in muscle strength after ACL reconstruction do not influence cardiorespiratory responses to isometabolic exercise |
title_full |
Differences in muscle strength after ACL reconstruction do not influence cardiorespiratory responses to isometabolic exercise |
title_fullStr |
Differences in muscle strength after ACL reconstruction do not influence cardiorespiratory responses to isometabolic exercise |
title_full_unstemmed |
Differences in muscle strength after ACL reconstruction do not influence cardiorespiratory responses to isometabolic exercise |
title_sort |
Differences in muscle strength after ACL reconstruction do not influence cardiorespiratory responses to isometabolic exercise |
author |
Andrade, Marilia dos Santos [UNIFESP] |
author_facet |
Andrade, Marilia dos Santos [UNIFESP] Lira, Claudio Andre Barbosa de Vancini, Rodrigo Luiz [UNIFESP] Nakamoto, Fernanda Patti [UNIFESP] Cohen, Moises [UNIFESP] Silva, Antonio Carlos da [UNIFESP] |
author_role |
author |
author2 |
Lira, Claudio Andre Barbosa de Vancini, Rodrigo Luiz [UNIFESP] Nakamoto, Fernanda Patti [UNIFESP] Cohen, Moises [UNIFESP] Silva, Antonio Carlos da [UNIFESP] |
author2_role |
author author author author author |
dc.contributor.institution.none.fl_str_mv |
Universidade Federal de São Paulo (UNIFESP) Universidade Federal de Goiás Faculty of Physical Education Department of Human and Exercise Physiology Universidade Federal do Espírito Santo Center for Physical Education and Sport |
dc.contributor.author.fl_str_mv |
Andrade, Marilia dos Santos [UNIFESP] Lira, Claudio Andre Barbosa de Vancini, Rodrigo Luiz [UNIFESP] Nakamoto, Fernanda Patti [UNIFESP] Cohen, Moises [UNIFESP] Silva, Antonio Carlos da [UNIFESP] |
dc.subject.eng.fl_str_mv |
rehabilitation anterior cruciate ligament isokinetic testing physical therapy oxygen uptake ventilatory response |
topic |
rehabilitation anterior cruciate ligament isokinetic testing physical therapy oxygen uptake ventilatory response |
description |
Objectives: To investigate whether the muscle strength decrease that follows anterior cruciate ligament (ACL) reconstruction would lead to different cardiorespiratory adjustments during dynamic exercise.Method: Eighteen active male subjects were submitted to isokinetic evaluation of knee flexor and extensor muscles four months after ACL surgery. Thigh circumference was also measured and an incremental unilateral cardiopulmonary exercise test was performed separately for both involved and uninvolved lower limbs in order to compare heart rate, oxygen consumption, minute ventilation, and ventilatory pattern (breath rate, tidal volume, inspiratory time, expiratory time, tidal volume/inspiratory time) at three different workloads (moderate, anaerobic threshold, and maximal).Results:There was a significant difference between isokinetic extensor peak torque measured in the involved (116.5±29.1 Nm) and uninvolved (220.8±40.4 Nm) limbs, p=0.000. Isokinetic flexor peak torque was also lower in the involved limb than in the uninvolved limb (107.8±15.4 and 132.5±26.3 Nm, p=0.004, respectively). Lower values were also found in involved thigh circumference as compared with uninvolved limb (46.9±4.3 and 48.5±3.9 cm, p=0.005, respectively). No differences were found between the lower limbs in any of the variables of the incremental cardiopulmonary tests at all exercise intensities.Conclusions: Our findings indicate that, four months after ACL surgery, there is a significant deficit in isokinetic strength in the involved limb, but these differences in muscle strength requirement do not produce differences in the cardiorespiratory adjustments to exercise. Based on the hypotheses from the literature which explain the differences in the physiological responses to exercise for different muscle masses, we can deduce that, after 4 months of a rehabilitation program after an ACL reconstruction, individuals probably do not present differences in muscle oxidative and peripheral perfusion capacities that could elicit higher levels of peripheral cardiorepiratory stimulus during exercise. |
publishDate |
2014 |
dc.date.issued.fl_str_mv |
2014-05-16 |
dc.date.accessioned.fl_str_mv |
2015-06-14T13:47:06Z |
dc.date.available.fl_str_mv |
2015-06-14T13:47:06Z |
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.citation.fl_str_mv |
Brazilian Journal of Physical Therapy. Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia , v. 18, n. 2, p. 144-151, 2014. |
dc.identifier.uri.fl_str_mv |
http://repositorio.unifesp.br/handle/11600/8382 http://dx.doi.org/10.1590/S1413-35552012005000153 |
dc.identifier.issn.none.fl_str_mv |
1413-3555 |
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S1413-35552014000200144.pdf |
dc.identifier.scielo.none.fl_str_mv |
S1413-35552014000200144 |
dc.identifier.doi.none.fl_str_mv |
10.1590/S1413-35552012005000153 |
dc.identifier.wos.none.fl_str_mv |
WOS:000337944500006 |
identifier_str_mv |
Brazilian Journal of Physical Therapy. Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia , v. 18, n. 2, p. 144-151, 2014. 1413-3555 S1413-35552014000200144.pdf S1413-35552014000200144 10.1590/S1413-35552012005000153 WOS:000337944500006 |
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http://repositorio.unifesp.br/handle/11600/8382 http://dx.doi.org/10.1590/S1413-35552012005000153 |
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eng |
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Brazilian Journal of Physical Therapy |
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openAccess |
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144-151 |
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Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia |
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Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia |
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