Muscular heat shock protein response and muscle damage after semi-professional football match.

Autor: Wiig H; Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway., Cumming KT; Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway., Handegaard V; Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway., Stabell J; Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway., Spencer M; Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway.; Department of Public Health, Sport & Nutrition, University of Agder, Agder, Norway., Raastad T; Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway.
Jazyk: angličtina
Zdroj: Scandinavian journal of medicine & science in sports [Scand J Med Sci Sports] 2022 Jun; Vol. 32 (6), pp. 984-996. Date of Electronic Publication: 2022 Mar 08.
DOI: 10.1111/sms.14148
Abstrakt: Purpose: A typical football match leads to neuromuscular fatigue and physical performance impairments up to 72-96 h post-match. While muscle damage is thought to be a major factor, damage on the ultrastructural level has never been documented. The purpose of this study was to investigate post-match cellular muscle damage by quantifying the heat shock protein (HSP) response as a proxy for protein damage.
Methods: Muscle biopsies, blood samples, countermovement jumps, and perception of muscle soreness were obtained from twelve semi-professional football players 1, 24, 48, and 72 h after a 90-min football match. Muscle biopsies were analyzed for αB-crystallin and HSP70 in the cytosolic and cytoskeletal sub-cellular fractions by Western blotting. Fiber type-specific αB-crystallin and HSP70 staining intensity, and tenascin-C immunoreactivity were analyzed with immunohistochemistry. Blood samples were analyzed for creatine kinase and myoglobin.
Results: Within 24 h post-match, a 2.7- and 9.9-fold increase in creatine kinase and myoglobin were observed, countermovement jump performance decreased by -9.7% and muscle soreness increased by 0.68 units. αB-crystallin and HSP70 accumulated in cytoskeletal structures evident by a 3.6- and 1.8-fold increase in the cytoskeletal fraction and a parallel decrease in the cytosolic fraction. In type I and II fibers, αB-crystallin staining intensity increased by 15%-41% and remained elevated at 72 h post-match. Lastly, the percentage of fibers with granular staining of αB-crystallin increased 2.2-fold.
Conclusions: Football match play induced a muscular HSP stress response 1-72 h post-match. Specifically, the accumulation of HSPs in cytoskeletal structures and the granular staining of αB-crystallin suggests occurrence of ultrastructural damage. The damage, indicated by the HSP response, might be one reason for the typically 72 h decrease in force-generating capacity after football matches.
(© 2022 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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