Work

Enhancement of Ia synaptic transmission to motoneurons after weight-lifting training in rats

Year: 2025

Type: article

Abstract: We demonstrate using electrophysiology that the synaptic transmission of sensory information from muscle spindles to spinal motoneurons is potentiated after 5 wk of weight-lifting training in rats. In trained animals, monosynaptic excitatory postsynaptic potentials (EPSPs) evoked from both homonymous and synergistic muscle afferents have higher amplitudes compared with controls. Adaptive changes are more pronounced in motoneurons innervating fast motor units, reflecting their more frequent recruitment during training.

Source: Journal of Applied Physiology

DOI: 10.1152/japplphysiol.00568.2025

Authors: Maja Krauze, Marcin Bączyk, Hanna Drzymała-Celichowska, Piotr Krutki

Language: English

Topic: Muscle activation and electromyography studies

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Good health and well-being

Open Access status: hybrid

Funder: Narodowe Centrum Nauki

Award: G3111040628