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ORIGINAL ARTICLE EPIDEMIOLOGY AND CLINICAL MEDICINE
The Journal of Sports Medicine and Physical Fitness 2021 January;61(1):102-8
DOI: 10.23736/S0022-4707.20.11076-4
Copyright © 2020 EDIZIONI MINERVA MEDICA
language: English
Irisin and inflammatory cytokines in elite male rowers: adaptation to volume-extended training period
Jaak JÜRIMÄE ✉, Priit PURGE
Institute of Sport Sciences and Physiotherapy, Faculty of Medicine, University of Tartu, Tartu, Estonia
BACKGROUND: This study examined the effect of 6-month volume-extended training period on irisin and inflammatory cytokine concentrations in elite male rowers.
METHODS: Nine elite male rowers (25.3±6.5 yrs; 190.6±5.1 cm; 93.4±7.5 kg; 14.6±2.6% body fat; maximal oxygen consumption [VO
RESULTS: Average weekly training volume was significantly higher (P<0.05) during the 6 months of heavy training compared to relative rest (11.6±1.4 h.week-1 vs. 18.4±1.0 h.week-1), while training intensity remained the same. At the end of training period, body fat% was significantly decreased, and fat free mass and maximal aerobic power significantly increased. Irisin was not changed (P>0.05) as the result of 6-month heavy training period, while training induced significant (P<0.05) increases and decreases in IL-10 and EGF values, respectively.
CONCLUSIONS: Serum irisin concentration was not sensitive to a significant increase in weekly training volume during the volume-extended training period in elite male rowers. An increase in training stress was accompanied by the increase in IL-10 and a decrease in EGF levels, and these inflammatory cytokines could be regarded as markers of heavy training stress during the typical preparatory period in elite male rowers.
KEY WORDS: Biomarkers; Blood; Exercise; Athletes