Repercussions on sarcomeres of the myotendinous junction and the myofibrillar type adaptations in response to different trainings on vertical ladder
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1002/jemt.23510 http://hdl.handle.net/11449/198933 |
Resumo: | The myofibrillary types establish to the skeletal muscle functional and adaptive properties that influence the sarcomeric arrangement during muscle contraction and may have repercussions on an important related force transmission region of the locomotor apparatus, the myotendinous junction (MTJ). This study aimed to describe changes in myofibrillary type and sarcomeric lengths in the belly muscle and MTJ of the soleus and plantaris muscles associated with training protocols in vertical ladder. Thirty adults male Wistar rats were divided into three groups (n = 10): Control (CTR), No-load Training (NLT), and Load Training (LT). Morphoquantitative analysis of different fibers types and sarcomere lengths were performed in distinct regions of plantaris and soleus muscles. In the plantaris muscle with both trainings, there was an increase in the cross-sectional area (CSA) in Type I and II fibers (p <.0001) while sarcomeric lengths revealed greater lengths in the proximal and distal sarcomeres of NLT, although in the LT we found greater lengths in the belly and MTJ sarcomeres. The soleus muscle showed an increase in CSA muscle fiber only in the NLT (p <.0001) and revealed alterations in belly and MTJ sarcomere lengths with training. We concluded that plantaris muscle has an adaptive effect directly associated with training load, with hypertrophy in both trainings and sarcomere length inverse from belly and MTJ, in LT associated with increased force generation and transmission at the MTJ, although soleus muscle has a lower adaptive response to training stimuli with variation in the belly and distal sarcomere of the MTJ. |
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Repercussions on sarcomeres of the myotendinous junction and the myofibrillar type adaptations in response to different trainings on vertical ladderdistal sarcomerefiber typehypertrophymyotendinous interfaceresistance trainingThe myofibrillary types establish to the skeletal muscle functional and adaptive properties that influence the sarcomeric arrangement during muscle contraction and may have repercussions on an important related force transmission region of the locomotor apparatus, the myotendinous junction (MTJ). This study aimed to describe changes in myofibrillary type and sarcomeric lengths in the belly muscle and MTJ of the soleus and plantaris muscles associated with training protocols in vertical ladder. Thirty adults male Wistar rats were divided into three groups (n = 10): Control (CTR), No-load Training (NLT), and Load Training (LT). Morphoquantitative analysis of different fibers types and sarcomere lengths were performed in distinct regions of plantaris and soleus muscles. In the plantaris muscle with both trainings, there was an increase in the cross-sectional area (CSA) in Type I and II fibers (p <.0001) while sarcomeric lengths revealed greater lengths in the proximal and distal sarcomeres of NLT, although in the LT we found greater lengths in the belly and MTJ sarcomeres. The soleus muscle showed an increase in CSA muscle fiber only in the NLT (p <.0001) and revealed alterations in belly and MTJ sarcomere lengths with training. We concluded that plantaris muscle has an adaptive effect directly associated with training load, with hypertrophy in both trainings and sarcomere length inverse from belly and MTJ, in LT associated with increased force generation and transmission at the MTJ, although soleus muscle has a lower adaptive response to training stimuli with variation in the belly and distal sarcomere of the MTJ.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Laboratory of Morphology and Physical Activity (LAMAF) Institute of Biosciences São Paulo State University (UNESP)Department of Physical Education Laboratory of Morphoquantitative Studies and Immunohistochemistry São Judas Tadeu UniversityDepartment of Anatomy Institute of Biomedical Sciences-III University of São Paulo (USP)Laboratory of Morphology and Physical Activity (LAMAF) Institute of Biosciences São Paulo State University (UNESP)FAPESP: 17/21977–3FAPESP: 18/09199–8FAPESP: 7/12525–1Universidade Estadual Paulista (Unesp)São Judas Tadeu UniversityUniversidade de São Paulo (USP)Rocha, Lara Caetano [UNESP]Pimentel Neto, Jurandyr [UNESP]de Sant'Ana, Jossei Soares [UNESP]Jacob, Carolina dos Santos [UNESP]Barbosa, Gabriela Klein [UNESP]Krause Neto, WalterWatanabe, Ii-seiCiena, Adriano Polican [UNESP]2020-12-12T01:25:52Z2020-12-12T01:25:52Z2020-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1190-1197http://dx.doi.org/10.1002/jemt.23510Microscopy Research and Technique, v. 83, n. 10, p. 1190-1197, 2020.1097-00291059-910Xhttp://hdl.handle.net/11449/19893310.1002/jemt.235102-s2.0-85085946372Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMicroscopy Research and Techniqueinfo:eu-repo/semantics/openAccess2021-10-22T21:03:14Zoai:repositorio.unesp.br:11449/198933Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:23:41.045682Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Repercussions on sarcomeres of the myotendinous junction and the myofibrillar type adaptations in response to different trainings on vertical ladder |
title |
Repercussions on sarcomeres of the myotendinous junction and the myofibrillar type adaptations in response to different trainings on vertical ladder |
spellingShingle |
Repercussions on sarcomeres of the myotendinous junction and the myofibrillar type adaptations in response to different trainings on vertical ladder Rocha, Lara Caetano [UNESP] distal sarcomere fiber type hypertrophy myotendinous interface resistance training |
title_short |
Repercussions on sarcomeres of the myotendinous junction and the myofibrillar type adaptations in response to different trainings on vertical ladder |
title_full |
Repercussions on sarcomeres of the myotendinous junction and the myofibrillar type adaptations in response to different trainings on vertical ladder |
title_fullStr |
Repercussions on sarcomeres of the myotendinous junction and the myofibrillar type adaptations in response to different trainings on vertical ladder |
title_full_unstemmed |
Repercussions on sarcomeres of the myotendinous junction and the myofibrillar type adaptations in response to different trainings on vertical ladder |
title_sort |
Repercussions on sarcomeres of the myotendinous junction and the myofibrillar type adaptations in response to different trainings on vertical ladder |
author |
Rocha, Lara Caetano [UNESP] |
author_facet |
Rocha, Lara Caetano [UNESP] Pimentel Neto, Jurandyr [UNESP] de Sant'Ana, Jossei Soares [UNESP] Jacob, Carolina dos Santos [UNESP] Barbosa, Gabriela Klein [UNESP] Krause Neto, Walter Watanabe, Ii-sei Ciena, Adriano Polican [UNESP] |
author_role |
author |
author2 |
Pimentel Neto, Jurandyr [UNESP] de Sant'Ana, Jossei Soares [UNESP] Jacob, Carolina dos Santos [UNESP] Barbosa, Gabriela Klein [UNESP] Krause Neto, Walter Watanabe, Ii-sei Ciena, Adriano Polican [UNESP] |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) São Judas Tadeu University Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Rocha, Lara Caetano [UNESP] Pimentel Neto, Jurandyr [UNESP] de Sant'Ana, Jossei Soares [UNESP] Jacob, Carolina dos Santos [UNESP] Barbosa, Gabriela Klein [UNESP] Krause Neto, Walter Watanabe, Ii-sei Ciena, Adriano Polican [UNESP] |
dc.subject.por.fl_str_mv |
distal sarcomere fiber type hypertrophy myotendinous interface resistance training |
topic |
distal sarcomere fiber type hypertrophy myotendinous interface resistance training |
description |
The myofibrillary types establish to the skeletal muscle functional and adaptive properties that influence the sarcomeric arrangement during muscle contraction and may have repercussions on an important related force transmission region of the locomotor apparatus, the myotendinous junction (MTJ). This study aimed to describe changes in myofibrillary type and sarcomeric lengths in the belly muscle and MTJ of the soleus and plantaris muscles associated with training protocols in vertical ladder. Thirty adults male Wistar rats were divided into three groups (n = 10): Control (CTR), No-load Training (NLT), and Load Training (LT). Morphoquantitative analysis of different fibers types and sarcomere lengths were performed in distinct regions of plantaris and soleus muscles. In the plantaris muscle with both trainings, there was an increase in the cross-sectional area (CSA) in Type I and II fibers (p <.0001) while sarcomeric lengths revealed greater lengths in the proximal and distal sarcomeres of NLT, although in the LT we found greater lengths in the belly and MTJ sarcomeres. The soleus muscle showed an increase in CSA muscle fiber only in the NLT (p <.0001) and revealed alterations in belly and MTJ sarcomere lengths with training. We concluded that plantaris muscle has an adaptive effect directly associated with training load, with hypertrophy in both trainings and sarcomere length inverse from belly and MTJ, in LT associated with increased force generation and transmission at the MTJ, although soleus muscle has a lower adaptive response to training stimuli with variation in the belly and distal sarcomere of the MTJ. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-12T01:25:52Z 2020-12-12T01:25:52Z 2020-10-01 |
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/10.1002/jemt.23510 Microscopy Research and Technique, v. 83, n. 10, p. 1190-1197, 2020. 1097-0029 1059-910X http://hdl.handle.net/11449/198933 10.1002/jemt.23510 2-s2.0-85085946372 |
url |
http://dx.doi.org/10.1002/jemt.23510 http://hdl.handle.net/11449/198933 |
identifier_str_mv |
Microscopy Research and Technique, v. 83, n. 10, p. 1190-1197, 2020. 1097-0029 1059-910X 10.1002/jemt.23510 2-s2.0-85085946372 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Microscopy Research and Technique |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1190-1197 |
dc.source.none.fl_str_mv |
Scopus 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 |
|
_version_ |
1808129062310248448 |