Whole body periodic acceleration improves muscle recovery after eccentric exercise
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Introduction: The aim of this study was to determine whether whole body periodic acceleration (pGz) could improve muscle recovery after unaccustomed eccentric exercise (EE).
Methods: Downhill treadmill running was used to elicit EE-induced muscle damage in mice, and pGz treatment (480 cycles per minute, 1 h·d -1) was applied daily for 10 d after the initial EE bout (day 0). Every 2 d during the pGz treatment course starting at day 0, we 1) assessed intracellular Ca 2+ and Na + concentrations and membrane potential (as indicators of intracellular ion dysfunction) in vivo in gastrocnemius muscle from anesthetized animals and 2) quantified creatine kinase (CK), tumor necrosis factor α (TNF-α), monocyte chemoattractant protein-1 (MCP-1), interleukin-6 (IL-6), and interleukin-10 (IL-10) concentrations in plasma or muscle lysates (as indicators of muscle damage and inflammation).
Results: EE significantly increased intracellular Ca 2+ and Na +, CK, TNF-α, MCP-1, IL-6, and IL-10, all of which peaked on day 2 with the exception of IL-10 and declined slowly over 10 d of recovery. pGz treatment after the EE bout mitigated ion dyshomeostasis and expedited recuperation to control values after 6 d of treatment. pGz treatment also accelerated the normalization of CK, TNF-α, MCP-1, and IL-6 while further increasing IL-10 concentrations. The nitric oxide synthase inhibitor L-N G -nitroarginine methyl ester, administered in drinking water before and maintained throughout the treatment course, was sufficient to abrogate the salutary effects of pGz after EE.
Conclusions: The present study demonstrates whole body periodic acceleration as an effective therapeutic strategy to accelerate muscle recovery after EE-induced skeletal muscle injury, as indicated by a faster normalization of all the studied parameters.
Originalsprog | Engelsk |
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Tidsskrift | Medicine and Science in Sports and Exercise |
Vol/bind | 48 |
Udgave nummer | 8 |
Sider (fra-til) | 1485-1494 |
Antal sider | 10 |
ISSN | 0195-9131 |
DOI | |
Status | Udgivet - 2016 |
Eksternt udgivet | Ja |
Bibliografisk note
(Ekstern)
Publisher Copyright:
Copyright © 2016 by the American College of Sports Medicine.
ID: 306300556