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[Role of metabosensitive afferent fibers in neuromuscular adaptive mechanisms].

Authors
  • Decherchi, Patrick
  • Dousset, Erick
Type
Published Article
Journal
The Canadian journal of neurological sciences. Le journal canadien des sciences neurologiques
Publication Date
May 01, 2003
Volume
30
Issue
2
Pages
91–97
Identifiers
PMID: 12778889
Source
Medline
License
Unknown

Abstract

Role of metabosensitive afferent fibers in neuromuscular adaptive mechanisms. Adaptation to exercise is provided by central neuron activity adjustments which are regulated partly by activation of group I and II (mechanosensitive) and group III and IV (metabosentitive) afferent fibers. These last two groups are activated by exercise-induced changes in muscle metabolism. The role played by these afferents seems to be crucial to exercise and fatigue tolerance adaptive mechanisms. Nevertheless, many questions remain unresolved. The aim of this review is to focus on the involvement of metabosensitivity in sensorimotor loops and neuromuscular adaptive mechanisms. The existence of an adaptive cardiovascular and respiratory reflex to exercise originating from metabosensitive afferent fiber activation is well established. Furthermore, the mechanism of skeletal muscle protection against fatigue could be due to modulation of central motor command at the spinal and supraspinal levels via these afferent fibers.

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