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Aerobic interval exercise with an eccentric contraction induces muscular hypertrophy and augmentation of muscular strength in rats

[Purpose] The purpose of this study was to examine whether an aerobic interval exercise using an eccentric contraction would result in skeletal muscular hypertrophy and augmentation of muscular strength in rats. [Subjects and Methods] Twenty-one female Wistar rats were used in this study. The rats w...

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Autores principales: Tsumiyama, Wakako, Oki, Sadaaki, Takamiya, Naomi, Umei, Namiko, Shimizu, Michele Eisemann, Ono, Takeya, Otsuka, Akira
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Society of Physical Therapy Science 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4433983/
https://www.ncbi.nlm.nih.gov/pubmed/25995562
http://dx.doi.org/10.1589/jpts.27.1083
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author Tsumiyama, Wakako
Oki, Sadaaki
Takamiya, Naomi
Umei, Namiko
Shimizu, Michele Eisemann
Ono, Takeya
Otsuka, Akira
author_facet Tsumiyama, Wakako
Oki, Sadaaki
Takamiya, Naomi
Umei, Namiko
Shimizu, Michele Eisemann
Ono, Takeya
Otsuka, Akira
author_sort Tsumiyama, Wakako
collection PubMed
description [Purpose] The purpose of this study was to examine whether an aerobic interval exercise using an eccentric contraction would result in skeletal muscular hypertrophy and augmentation of muscular strength in rats. [Subjects and Methods] Twenty-one female Wistar rats were used in this study. The rats were randomly divided into three groups. The control group performed no exercise. The aerobic endurance exercise group ran for 90 min. The aerobic interval exercise group ran for a total of 90 minutes in 5 minute bouts separated by 2 minute rest periods. The exercise groups ran on a downhill treadmill incline, once every three days, for a total of twenty sessions. [Results] The muscle wet weights, the muscle fiber cross-section minor axes, and the tetanus tension results of the aerobic endurance and aerobic interval exercise groups were significantly larger than those of the control group. [Conclusion] These results indicate that aerobic interval exercise may be an effective method of inducing hypertrophy and augmenting muscular strength in skeletal muscle.
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spelling pubmed-44339832015-05-20 Aerobic interval exercise with an eccentric contraction induces muscular hypertrophy and augmentation of muscular strength in rats Tsumiyama, Wakako Oki, Sadaaki Takamiya, Naomi Umei, Namiko Shimizu, Michele Eisemann Ono, Takeya Otsuka, Akira J Phys Ther Sci Original Article [Purpose] The purpose of this study was to examine whether an aerobic interval exercise using an eccentric contraction would result in skeletal muscular hypertrophy and augmentation of muscular strength in rats. [Subjects and Methods] Twenty-one female Wistar rats were used in this study. The rats were randomly divided into three groups. The control group performed no exercise. The aerobic endurance exercise group ran for 90 min. The aerobic interval exercise group ran for a total of 90 minutes in 5 minute bouts separated by 2 minute rest periods. The exercise groups ran on a downhill treadmill incline, once every three days, for a total of twenty sessions. [Results] The muscle wet weights, the muscle fiber cross-section minor axes, and the tetanus tension results of the aerobic endurance and aerobic interval exercise groups were significantly larger than those of the control group. [Conclusion] These results indicate that aerobic interval exercise may be an effective method of inducing hypertrophy and augmenting muscular strength in skeletal muscle. The Society of Physical Therapy Science 2015-04-30 2015-04 /pmc/articles/PMC4433983/ /pubmed/25995562 http://dx.doi.org/10.1589/jpts.27.1083 Text en 2015©by the Society of Physical Therapy Science. Published by IPEC Inc. http://creativecommons.org/licenses/by-nc-nd/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives (by-nc-nd) License.
spellingShingle Original Article
Tsumiyama, Wakako
Oki, Sadaaki
Takamiya, Naomi
Umei, Namiko
Shimizu, Michele Eisemann
Ono, Takeya
Otsuka, Akira
Aerobic interval exercise with an eccentric contraction induces muscular hypertrophy and augmentation of muscular strength in rats
title Aerobic interval exercise with an eccentric contraction induces muscular hypertrophy and augmentation of muscular strength in rats
title_full Aerobic interval exercise with an eccentric contraction induces muscular hypertrophy and augmentation of muscular strength in rats
title_fullStr Aerobic interval exercise with an eccentric contraction induces muscular hypertrophy and augmentation of muscular strength in rats
title_full_unstemmed Aerobic interval exercise with an eccentric contraction induces muscular hypertrophy and augmentation of muscular strength in rats
title_short Aerobic interval exercise with an eccentric contraction induces muscular hypertrophy and augmentation of muscular strength in rats
title_sort aerobic interval exercise with an eccentric contraction induces muscular hypertrophy and augmentation of muscular strength in rats
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4433983/
https://www.ncbi.nlm.nih.gov/pubmed/25995562
http://dx.doi.org/10.1589/jpts.27.1083
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