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Resistance training in young men induces muscle transcriptome-wide changes associated with muscle structure and metabolism refining the response to exercise-induced stress

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Abstract

Background

Gene expression is an important process underpinning the acute and chronic adaptive response to resistance exercise (RE) training.

Purpose

To investigate the effect of training status on vastus lateralis muscle global transcriptome at rest and following acute RE.

Methods

Muscle biopsies of nine young men (age: 26(2) years; body mass: 69(9) kg; height 172(6) cm) who undertook RE training for 10 weeks were collected pre and 24 h post-RE in the untrained (W1) and trained (W10) states and analysed using microarray. Tests of differential expression were conducted for rested and after RE contrasts in both training states. To control for false discovery rate (FDR), multiple testing correction was performed at a cut-off of FDR < 0.05.

Results

Unaccustomed RE (at W1) upregulated muscle gene transcripts related to stress (e.g., heat shock proteins), damage and inflammation, structural remodelling, protein turnover and increased translational capacity. Trained muscles (at W10) showed changes in the transcriptome signature regarding the regulation of energy metabolism, favouring a more oxidative one, upregulated antioxidant- and immune-related genes/terms, and gene transcripts related to the cytoskeleton and extracellular matrix, muscle contraction, development and growth.

Conclusions

These results highlight that chronic repetition of RE changes muscle transcriptome response towards a more refined response to RE-induced stress.

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Abbreviations

FDR:

False discovery rate

GO:

Gene ontology

HSP:

Heat shock proteins

mTOR:

Mechanistic target of rapamycin

p70S6K:

p70 Ribosomal S6 kinase

RE:

Resistance exercise

KEGG:

Kyoto Encyclopedia of Genes and Genomes

W1:

Untrained state

W10:

Trained state

References

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Acknowledgements

We acknowledge all the volunteers that participated in this study. This study was supported by the São Paulo Research Foundation (FAPESP) Grants (#2013/21218-4 and #2017/04299-1 to CAL), CAPES-PROEX and Natural Science and Engineering Research Council (NSERC) of Canada (RGPIN-2015-04613 to SMP). SMP also acknowledges support from the Canada Research Chairs program. FD was supported by FAPESP Grants (#2012/24499-1, #2014/19594-0, #2016/24259-1 and #2018/13064-0). CU, HR and VT are supported by the National Council for Scientific and Technological Development (CNPq) Grant (CU: #303085/2015-0 and #448387/2014-0; HR: #307023/2014-1; VT: #310823/2013-7).

Author information

Authors and Affiliations

Authors

Contributions

FD had original idea of the study and the final study design was developed by FD, CU, CAL, MEL, FCV, VT, HR and SMP. Participants were recruited and trained at the School of Physical Education and Sport, University of São Paulo, by FD, MEL, FCV and PRJ. AJH and CM conducted the RNA preparation to the microarray procedure. HM performed the biostatistical procedures and analyses. All authors participated in the interpretation of the data. FD, HM and PRJ designed the figures and supplementary tables. FD wrote the first version of the manuscript. All authors contributed to the manuscript, reviewed it, and approved the content of the final version.

Corresponding author

Correspondence to Carlos Ugrinowitsch.

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Conflict of interest

The authors do not have any conflicts of interest financial or otherwise to declare.

Ethical standard

All procedures performed herein were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

Additional information

Communicated by Phillip D. Chilibeck.

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Damas, F., Ugrinowitsch, C., Libardi, C.A. et al. Resistance training in young men induces muscle transcriptome-wide changes associated with muscle structure and metabolism refining the response to exercise-induced stress. Eur J Appl Physiol 118, 2607–2616 (2018). https://doi.org/10.1007/s00421-018-3984-y

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  • DOI: https://doi.org/10.1007/s00421-018-3984-y

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