Effect of Swimming Training on the Rectus Abdominis Muscle of rats: Morphological and Histochemical Aspects

We investigated the effect of swimming training in rats on morphological characteristics, hypertrophy levels and metabolic and contractile adaptations of different fiber types in rat the rectus abdominis muscle. Rats were randoverly assigned to one of three groups (N = 5 each): a) swimming training...

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Autores principales:	Alvarez Rosa,Maria José, Dal Pai,Vitalino, Bremer Neto,Hermann, Azoubel,Reinaldo, Nouailhetas,Viviane Louise Andree
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2007
Materias:	Aerobic exercise Type fibers Muscle
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000300027
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spelling	oai:scielo:S0717-950220070003000272007-10-30Effect of Swimming Training on the Rectus Abdominis Muscle of rats: Morphological and Histochemical AspectsAlvarez Rosa,Maria JoséDal Pai,VitalinoBremer Neto,HermannAzoubel,ReinaldoNouailhetas,Viviane Louise Andree Aerobic exercise Type fibers Muscle We investigated the effect of swimming training in rats on morphological characteristics, hypertrophy levels and metabolic and contractile adaptations of different fiber types in rat the rectus abdominis muscle. Rats were randoverly assigned to one of three groups (N = 5 each): a) swimming training for 1 h, twice a week (2x/w), b) 1 h five times a week (5x/w) for 9 consecutive weeks, or c) without any swimming training (Control). Body weight increased in 2x/w rats and decreased in the 5x/w ones. Muscle fiber diameters increased in both trained groups, with higher values in the 2x/w group. Aerobic exercise increased slow oxidative (SO) + fast-oxidative-glycolytic (FOG) fibers and decreased fast glycolytic (FG) fibers. In addition, SO fibers were increased and FOG + FG fibers were decreased in trained rats. Small and angulated atrophic fibers were also observed. These results corroborate that swimming exercise increases aerobic metabolism and thus oxidative and low contraction fibers. However, the used protocol induced, to a variable degree, changes in the muscle fiber morphologyinfo:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.25 n.3 20072007-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000300027en10.4067/S0717-95022007000300027
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Aerobic exercise Type fibers Muscle
spellingShingle	Aerobic exercise Type fibers Muscle Alvarez Rosa,Maria José Dal Pai,Vitalino Bremer Neto,Hermann Azoubel,Reinaldo Nouailhetas,Viviane Louise Andree Effect of Swimming Training on the Rectus Abdominis Muscle of rats: Morphological and Histochemical Aspects
description	We investigated the effect of swimming training in rats on morphological characteristics, hypertrophy levels and metabolic and contractile adaptations of different fiber types in rat the rectus abdominis muscle. Rats were randoverly assigned to one of three groups (N = 5 each): a) swimming training for 1 h, twice a week (2x/w), b) 1 h five times a week (5x/w) for 9 consecutive weeks, or c) without any swimming training (Control). Body weight increased in 2x/w rats and decreased in the 5x/w ones. Muscle fiber diameters increased in both trained groups, with higher values in the 2x/w group. Aerobic exercise increased slow oxidative (SO) + fast-oxidative-glycolytic (FOG) fibers and decreased fast glycolytic (FG) fibers. In addition, SO fibers were increased and FOG + FG fibers were decreased in trained rats. Small and angulated atrophic fibers were also observed. These results corroborate that swimming exercise increases aerobic metabolism and thus oxidative and low contraction fibers. However, the used protocol induced, to a variable degree, changes in the muscle fiber morphology
author	Alvarez Rosa,Maria José Dal Pai,Vitalino Bremer Neto,Hermann Azoubel,Reinaldo Nouailhetas,Viviane Louise Andree
author_facet	Alvarez Rosa,Maria José Dal Pai,Vitalino Bremer Neto,Hermann Azoubel,Reinaldo Nouailhetas,Viviane Louise Andree
author_sort	Alvarez Rosa,Maria José
title	Effect of Swimming Training on the Rectus Abdominis Muscle of rats: Morphological and Histochemical Aspects
title_short	Effect of Swimming Training on the Rectus Abdominis Muscle of rats: Morphological and Histochemical Aspects
title_full	Effect of Swimming Training on the Rectus Abdominis Muscle of rats: Morphological and Histochemical Aspects
title_fullStr	Effect of Swimming Training on the Rectus Abdominis Muscle of rats: Morphological and Histochemical Aspects
title_full_unstemmed	Effect of Swimming Training on the Rectus Abdominis Muscle of rats: Morphological and Histochemical Aspects
title_sort	effect of swimming training on the rectus abdominis muscle of rats: morphological and histochemical aspects
publisher	Sociedad Chilena de Anatomía
publishDate	2007
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000300027
work_keys_str_mv	AT alvarezrosamariajose effectofswimmingtrainingontherectusabdominismuscleofratsmorphologicalandhistochemicalaspects AT dalpaivitalino effectofswimmingtrainingontherectusabdominismuscleofratsmorphologicalandhistochemicalaspects AT bremernetohermann effectofswimmingtrainingontherectusabdominismuscleofratsmorphologicalandhistochemicalaspects AT azoubelreinaldo effectofswimmingtrainingontherectusabdominismuscleofratsmorphologicalandhistochemicalaspects AT nouailhetasvivianelouiseandree effectofswimmingtrainingontherectusabdominismuscleofratsmorphologicalandhistochemicalaspects
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Effect of Swimming Training on the Rectus Abdominis Muscle of rats: Morphological and Histochemical Aspects

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