Sprint interval training (SIT) reduces serum epidermal growth factor (EGF), but not other inflammatory cytokines in trained older men

Zerbu Yasar, Bradley T. Elliott, Yvoni Kyriakidou, Chiazor T. Nwokoma, Ruth D. Postlethwaite, Christopher J. Gaffney, Susan Dewhurst, Lawrence D. Hayes

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Purpose: The present study aimed to investigate the effect of age on circulating pro- and anti-inflammatory cytokines and growth factors. A secondary aim was to investigate whether a novel sprint interval training (SIT) intervention (3 × 20 s ‘all out’ static sprints, twice a week for 8 weeks) would affect inflammatory markers in older men. Methods: Nine older men [68 (1) years] and eleven younger men [28 (2) years] comprised the younger group. Aerobic fitness and inflammatory markers were taken at baseline for both groups and following the SIT intervention for the older group. Results: Interleukin (IL)-8, vascular endothelial growth factor (VEGF), and monocyte chemoattractant protein-1 (MCP-1) were unchanged for the older and younger groups at baseline (IL-8, p = 0.819; MCP-1, p = 0.248; VEGF, p = 0.264). Epidermal growth factor (EGF) was greater in the older group compared to the younger group at baseline [142 (20) pg mL−1 and 60 (12) pg mL−1, respectively, p = 0.001, Cohen's d = 1.64]. Following SIT, older men decreased EGF to 100 (12) pg mL−1 which was similar to that of young men who did not undergo training (p = 0.113, Cohen's d = 1.07). Conclusion: Older aerobically trained men have greater serum EGF than younger aerobically trained men. A novel SIT intervention in older men can shift circulating EGF towards trained younger concentrations. As lower EGF has previously been associated with longevity in C. elegans, the manipulative effect of SIT on EGF in healthy ageing in the human may be of further interest.

    Original languageEnglish
    JournalEuropean Journal of Applied Physiology
    Early online date16 Mar 2021
    DOIs
    Publication statusE-pub ahead of print - 16 Mar 2021

    Bibliographical note

    Funding Information:
    ZY received a PhD scholarship from the University of Cumbria. The cytokine arrays used within this work were funded by the University of Cumbria and the University of Westminster.

    Publisher Copyright:
    © 2021, The Author(s).

    Copyright:
    Copyright 2021 Elsevier B.V., All rights reserved.

    Keywords

    • Ageing
    • Cytokines
    • Exercise
    • Growth factors
    • HIIT
    • Inflammation

    ASJC Scopus subject areas

    • Orthopedics and Sports Medicine
    • Public Health, Environmental and Occupational Health
    • Physiology (medical)

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