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Effects of trunk extensor eccentric exercise on lipid profile and glycaemic response
OBJECTIVES: A number of previous studies reported physiological responses and adaptations after eccentric muscle contraction of limb muscles. In contrast, no study has determined physiological response after eccentric contraction of trunk muscles. The purpose of the present study was to compare the...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BMJ Publishing Group
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7642235/ https://www.ncbi.nlm.nih.gov/pubmed/33178444 http://dx.doi.org/10.1136/bmjsem-2020-000861 |
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author | Lee, Ho-Seong Akimoto, Takayuki Kim, Ah-Ram |
author_facet | Lee, Ho-Seong Akimoto, Takayuki Kim, Ah-Ram |
author_sort | Lee, Ho-Seong |
collection | PubMed |
description | OBJECTIVES: A number of previous studies reported physiological responses and adaptations after eccentric muscle contraction of limb muscles. In contrast, no study has determined physiological response after eccentric contraction of trunk muscles. The purpose of the present study was to compare the functional and metabolic changes after eccentric or concentric exercises of trunk extensor muscles. METHODS: In this randomised, crossover study, 10 men performed a single bout of 50 maximal voluntary concentric and eccentric contractions of the trunk extensor with an interval of 2 weeks between bouts. The activities of the paraspinal muscles were recorded during concentric and eccentric contractions. Muscle soreness, muscle function, blood lipid profiles and glycaemic responses were measured before, immediately after and at 24, 48, 72 and 96 hours after each bout. RESULTS: The lumbar multifidus and iliocostalis lumborum activities during eccentric contractions were significantly higher than those during concentric contractions (p<0.05). The maximal strength and muscle endurance of the trunk extensor were not decreased even after the eccentric contractions. Compared with concentric contractions, muscle soreness was significantly increased at 24, 48, 72 and 96 hours after eccentric contractions (p<0.05). The TG, TC and LDL-C were significantly lower at 48, 72 and 96 hours after eccentric contractions (p<0.05), while blood glucose levels and HOMA-IR were significantly greater at 48 and 72 hours after eccentric contractions (p<0.05). CONCLUSION: This study indicated that eccentric contractions of the trunk extensor had positive effects on the lipid profile and the glycaemic response. |
format | Online Article Text |
id | pubmed-7642235 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | BMJ Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-76422352020-11-10 Effects of trunk extensor eccentric exercise on lipid profile and glycaemic response Lee, Ho-Seong Akimoto, Takayuki Kim, Ah-Ram BMJ Open Sport Exerc Med Original Research OBJECTIVES: A number of previous studies reported physiological responses and adaptations after eccentric muscle contraction of limb muscles. In contrast, no study has determined physiological response after eccentric contraction of trunk muscles. The purpose of the present study was to compare the functional and metabolic changes after eccentric or concentric exercises of trunk extensor muscles. METHODS: In this randomised, crossover study, 10 men performed a single bout of 50 maximal voluntary concentric and eccentric contractions of the trunk extensor with an interval of 2 weeks between bouts. The activities of the paraspinal muscles were recorded during concentric and eccentric contractions. Muscle soreness, muscle function, blood lipid profiles and glycaemic responses were measured before, immediately after and at 24, 48, 72 and 96 hours after each bout. RESULTS: The lumbar multifidus and iliocostalis lumborum activities during eccentric contractions were significantly higher than those during concentric contractions (p<0.05). The maximal strength and muscle endurance of the trunk extensor were not decreased even after the eccentric contractions. Compared with concentric contractions, muscle soreness was significantly increased at 24, 48, 72 and 96 hours after eccentric contractions (p<0.05). The TG, TC and LDL-C were significantly lower at 48, 72 and 96 hours after eccentric contractions (p<0.05), while blood glucose levels and HOMA-IR were significantly greater at 48 and 72 hours after eccentric contractions (p<0.05). CONCLUSION: This study indicated that eccentric contractions of the trunk extensor had positive effects on the lipid profile and the glycaemic response. BMJ Publishing Group 2020-10-28 /pmc/articles/PMC7642235/ /pubmed/33178444 http://dx.doi.org/10.1136/bmjsem-2020-000861 Text en © Author(s) (or their employer(s)) 2020. Re-use permitted under CC BY. Published by BMJ. https://creativecommons.org/licenses/by/4.0/ https://creativecommons.org/licenses/by/4.0/This is an open access article distributed in accordance with the Creative Commons Attribution 4.0 Unported (CC BY 4.0) license, which permits others to copy, redistribute, remix, transform and build upon this work for any purpose, provided the original work is properly cited, a link to the licence is given, and indication of whether changes were made. See: https://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Original Research Lee, Ho-Seong Akimoto, Takayuki Kim, Ah-Ram Effects of trunk extensor eccentric exercise on lipid profile and glycaemic response |
title | Effects of trunk extensor eccentric exercise on lipid profile and glycaemic response |
title_full | Effects of trunk extensor eccentric exercise on lipid profile and glycaemic response |
title_fullStr | Effects of trunk extensor eccentric exercise on lipid profile and glycaemic response |
title_full_unstemmed | Effects of trunk extensor eccentric exercise on lipid profile and glycaemic response |
title_short | Effects of trunk extensor eccentric exercise on lipid profile and glycaemic response |
title_sort | effects of trunk extensor eccentric exercise on lipid profile and glycaemic response |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7642235/ https://www.ncbi.nlm.nih.gov/pubmed/33178444 http://dx.doi.org/10.1136/bmjsem-2020-000861 |
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