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Title: Lifelong training improves anti-inflammatory environment and maintains the number of regulatory T cells in masters athletes
Authors: Minuzzi, Luciele G.
Rama, Luis
Bishop, Nicolette
Rosado, Fatima
Martinho, Antonio
Paiva, Artur
Teixeira, Ana Maria
Keywords: Treg cells
Master athletes
Issue Date: 2017
Publisher: © Springer
Citation: MINUZZI, L.G. ... et al, 2017. Lifelong training improves anti-inflammatory environment and maintains the number of regulatory T cells in masters athletes. European Journal of Applied Physiology, 117 (6), pp. 1131–1140.
Abstract: Purpose: The purpose of this study was to quantify and characterize peripheral blood regulatory T cells (Tregs), as well as the IL-10 plasma concentration, in Masters athletes at rest and after an acute exhaustive exercise test. Methods: Eighteen Masters athletes (self-reported training: 24.6 ± 1.83 years; 10.27 ± 0.24 months and 5.45 ± 0.42 h/week per each month trained) and an age-matched control group of ten subjects (that never took part in regular physical training) volunteered for this study. All subjects performed an incremental test to exhaustion on a cycle ergometer. Blood samples were obtained before (Pre), 10 min into recovery (Post), and 1 h after the test (1 h). Results: Absolute numbers of Tregs were similar in both groups at rest. Acute exercise induced a significant increase in absolute numbers of Tregs at Post (0.049 ± 0.021 to 0.056 ± 0.024 × 109/L, P = 0.029 for Masters; 0.048 ± 0.017 to 0.058 ± 0.020 × 109/L, P = 0.037 for control) in both groups. Treg mRNA expression for FoxP3, IL-10, and TGF-β in sorted Tregs was similar throughout the trials in both groups. Masters athletes showed a higher percentage of subjects expressing the FoxP3 (100% for Masters vs. 78% for Controls, P = 0.038) and TGF-β (89% for Masters vs. 56% for Controls, P = 0.002) after exercise and a higher plasma IL-10 concentration (15.390 ± 7.032 for Masters vs. 2.411 ± 1.117 for control P = 0.001, ES = 2.57) at all timepoints. KLRG1 expression in Tregs was unchanged. Conclusion: Our findings showed that Masters athletes have elevated anti-inflammatory markers and maintain the number of Tregs, and may be an adaptive response to lifelong training.
Description: This is a post-peer-review, pre-copyedit version of an article published in European Journal of Applied Physiology. The final authenticated version is available online at: http://dx.doi.org/10.1007/s00421-017-3600-6
Sponsor: The study was funded by the Faculty of Sport Sciences and Physical Education, University of Coimbra. In addition, the present manuscript was accomplished with support from CAPES, Coordination for the Improvement of Higher Education Personnel, Brazil (LGM—Grants Number BEX-1417/13−4). AMT and LR are registered in the unit UID/DTP/04213/2016.
Version: Accepted for publication
DOI: 10.1007/s00421-017-3600-6
URI: https://dspace.lboro.ac.uk/2134/24919
Publisher Link: http://dx.doi.org/10.1007/s00421-017-3600-6
ISSN: 1439-6319
Appears in Collections:Published Articles (Sport, Exercise and Health Sciences)

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