Corticospinal and intracortical excitability is modulated in the knee extensors after acute strength training
Alibazi, R. J., Frazer, A. K., Pearce, A. J., Tallent, J., Avela, J., & Kidgell, D. J. (2022). Corticospinal and intracortical excitability is modulated in the knee extensors after acute strength training. Journal of Sports Sciences, 40(5), 561-570. https://doi.org/10.1080/02640414.2021.2004681
Published inJournal of Sports Sciences
© 2021 Informa UK Limited, trading as Taylor & Francis Group
The corticospinal responses to high-intensity and low-intensity strength-training of the upper limb are modulated in an intensity-dependent manner. Whether an intensity-dependent threshold occurs following acute strength training of the knee extensors (KE) remains unclear. We assessed the corticospinal responses following high-intensity (85% of maximal strength) or low-intensity (30% of maximal strength) KE strength-training with measures taken during an isometric KE task at baseline, post-5, 30 and 60-min. Twenty-eight volunteers (23 ± 3 years) were randomized to high-intensity (n = 11), low-intensity (n = 10) or to a control group (n = 7). Corticospinal responses were evoked with transcranial magnetic stimulation at intracortical and corticospinal levels. High- or low-intensity KE strength-training had no effect on maximum voluntary contraction force post-exercise (P > 0.05). High-intensity training increased corticospinal excitability (range 130–180%) from 5 to 60 min post-exercise compared to low-intensity training (17–30% increase). Large effect sizes (ES) showed that short-interval cortical inhibition (SICI) was reduced only for the high-intensity training group from 5–60 min post-exercise (24–44% decrease) compared to low-intensity (ES ranges 1–1.3). These findings show a training-intensity threshold is required to adjust CSE and SICI following strength training in the lower limb. ...
Publication in research information system
MetadataShow full item record
- Liikuntatieteiden tiedekunta 
Additional information about fundingThis research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.
Showing items with similar title or keywords.
Mason, Joel; Frazer, Ashlyn K.; Jaberzadeh, Shapour; Ahtiainen, Juha P.; Avela, Janne; Rantalainen, Timo; Leung, Michael; Kidgell, Dawson J. (Lippincott Williams & Wilkins, 2019)Neuroplastic changes in the primary motor cortex accompany performance improvements following motor practice. Recent evidence suggests that the corticospinal responses to strength and skill training are similar, following ...
Mason, Joel; Frazer, Ashlyn K.; Avela, Janne; Pearce, Alan J.; Howatson, Glyn; Kidgell, Dawson J. (Springer, 2020)Purpose The motor cortex (M1) appears to be a primary site of adaptation following both a single session, and repeated strength-training sessions across multiple weeks. Given that a single session of strength-training is ...
Modulations of corticospinal excitability following rapid ankle dorsiflexion in skill- and endurance-trained athletes Hu, Nijia; Avela, Janne; Kidgell, Dawson J.; Piirainen, Jarmo M.; Walker, Simon (Springer, 2022)Purpose Long-term sports training, such as skill and endurance training, leads to specific neuroplasticity. However, it remains unclear if muscle stretch-induced proprioceptive feedback influences corticospinal ...
Priming the Motor Cortex With Anodal Transcranial Direct Current Stimulation Affects the Acute Inhibitory Corticospinal Responses to Strength Training Frazer, Ashlyn; Howatson, Glyn; Ahtiainen, Juha; Avela, Janne; Rantalainen, Timo; Kidgell, Dawson (Lippincott, Williams & Wilkins; National Strength and Conditioning Association, 2019)Synaptic plasticity in the motor cortex (M1) is associated with strength training (ST) and can be modified by transcranial direct current stimulation (tDCS). The M1 responses to ST increase when anodal tDCS is applied ...
The ipsilateral corticospinal responses to cross-education are dependent upon the motor-training intervention Leung, Michael; Rantalainen, Timo; Teo, Wei-Peng; Kidgell, Dawson (Springer Berlin Heidelberg, 2018)This study aimed to identify the ipsilateral corticospinal responses of the contralateral limb following different types of unilateral motor-training. Three groups performing unilateral slow-paced strength training (SPST), ...