Supplementation of specific collagen peptides following high-load resistance exercise upregulates gene expression in pathways involved in skeletal muscle signal transduction
Previous evidence suggests that resistance training in combination with specific collagen peptides (CP) improves adaptive responses of the muscular apparatus. Although beneficial effects have been repeatedly demonstrated, the underlying mechanisms are not well understood. Therefore, the primary obje...
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| Hauptverfasser: | , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
05 April 2022
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| In: |
Frontiers in physiology
Year: 2022, Jahrgang: 13, Pages: 1-11 |
| ISSN: | 1664-042X |
| DOI: | 10.3389/fphys.2022.838004 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.3389/fphys.2022.838004 Verlag, kostenfrei, Volltext: https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2022.838004/full 
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| Verfasserangaben: | Christoph Centner, Simon Jerger, Alistair Mallard, Anna Herrmann, Eugenia Varfolomeeva, Sandra Gollhofer, Steffen Oesser, Carsten Sticht, Norbert Gretz, Per Aagaard, Jakob L. Nielsen, Ulrik Frandsen, Charlotte Suetta, Albert Gollhofer and Daniel König |
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| 245 | 1 | 0 | |a Supplementation of specific collagen peptides following high-load resistance exercise upregulates gene expression in pathways involved in skeletal muscle signal transduction |c Christoph Centner, Simon Jerger, Alistair Mallard, Anna Herrmann, Eugenia Varfolomeeva, Sandra Gollhofer, Steffen Oesser, Carsten Sticht, Norbert Gretz, Per Aagaard, Jakob L. Nielsen, Ulrik Frandsen, Charlotte Suetta, Albert Gollhofer and Daniel König |
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| 520 | |a Previous evidence suggests that resistance training in combination with specific collagen peptides (CP) improves adaptive responses of the muscular apparatus. Although beneficial effects have been repeatedly demonstrated, the underlying mechanisms are not well understood. Therefore, the primary objective of the present randomized trial was to elucidate differences in gene expression pathways related to skeletal muscle signal transduction following acute high-load resistance exercise with and without CP intake. Recreationally active male participants were equally randomized to high-load leg extension exercise in combination with 15 g CP or placebo (PLA) supplementation. Muscle biopsies from the vastus lateralis muscle were obtained at baseline as well as 1, 4 and 24 h post exercise to investigate gene expression using next generation sequencing analysis. Several important anabolic pathways including PI3K-Akt and MAPK pathways were significantly upregulated at 1 and 4 h post-exercise. Significant between-group differences for both pathways were identified at the 4 h time point demonstrating a more pronounced effect after CP intake. Gene expression related to the mTOR pathway demonstrated a higher visual increase in the CP group compared to PLA by trend, but failed to achieve statistically significant group differences. The current findings revealed a significantly higher upregulation of key anabolic pathways (PI3K-Akt, MAPK) in human skeletal muscle 4 h following an acute resistance training combined with intake of 15 g of specific collagen peptides compared to placebo. Further investigations should examine potential relationships between upregulated gene expression and changes in myofibrillar protein synthesis as well as potential long-term effects on anabolic pathways on the protein level. | ||
| 650 | 4 | |a Collagen peptides | |
| 650 | 4 | |a Gene Expression | |
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