Publications by authors named "C Martignon"
Purpose: Theta-burst stimulation (TBS) over the primary motor cortex modulates activity of the underlying neural tissue, but little is known about its consequence on neuromuscular fatigue (NMF) and its neural correlates. This study aimed to compare the effects of facilitatory versus inhibitory TBS on the NMF and excitability/inhibition of the corticospinal pathway in an unfatigued/fatigued muscle.
Methods: The effects of three TBS protocols (facilitatory/intermittent: iTBS; inhibitory/continuous: cTBS, and sham: sTBS) were tested on exercise performance, neuromuscular function, corticospinal excitability and inhibition in twenty young healthy participants.
Article Synopsis
- This study examines the influence of sex on fatigue resistance during single-limb dynamic exercises, focusing on performance fatigability (PF), cardiovascular responses, and muscle metabolism.
- Twenty-four young healthy participants (12 males and 12 females) performed knee extension exercises while their neuromuscular performance and muscle oxidative characteristics were assessed.
- Results showed that while both sexes performed similarly in total work and time to exhaustion, females exhibited less decline in muscle strength post-exercise, higher mitochondrial capacity, and different cardiovascular responses compared to males.
Skeletal muscle fiber type and TMS-induced muscle relaxation in unfatigued and fatigued knee-extensor muscles.
Am J Physiol Regul Integr Comp Physiol
May 2024
The force drop after transcranial magnetic stimulation (TMS) delivered to the motor cortex during voluntary muscle contractions could inform about muscle relaxation properties. Because of the physiological relation between skeletal muscle fiber-type distribution and size and muscle relaxation, TMS could be a noninvasive index of muscle relaxation in humans. By combining a noninvasive technique to record muscle relaxation in vivo (TMS) with the gold standard technique for muscle tissue sampling (muscle biopsy), we investigated the relation between TMS-induced muscle relaxation in unfatigued and fatigued states, and muscle fiber-type distribution and size.
View Article and Find Full Text PDFIn studying neuromuscular fatigability, researchers commonly use functional criteria to position and hold the transcranial magnetic stimulation (TMS) coil during testing sessions. This could influence the magnitude of corticospinal excitability and inhibition responses due to imprecise and unsteady positions of the coil. To reduce coil position and orientation variability, neuronavigated TMS (nTMS) could be used.
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