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https://hdl.handle.net/2440/136511
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dc.contributor.author | Hand, B.J. | - |
dc.contributor.author | Opie, G.M. | - |
dc.contributor.author | Sidhu, S.K. | - |
dc.contributor.author | Semmler, J.G. | - |
dc.date.issued | 2022 | - |
dc.identifier.citation | Journal of Applied Physiology, 2022; 133(4):932-944 | - |
dc.identifier.issn | 8750-7587 | - |
dc.identifier.issn | 1522-1601 | - |
dc.identifier.uri | https://hdl.handle.net/2440/136511 | - |
dc.description | First published September 8, 2022 | - |
dc.description.abstract | Previous research using transcranial magnetic stimulation (TMS) has shown that plasticity within primary motor cortex (M1) is greater in people who undertake regular exercise, and a single session of aerobic exercise can increase M1 plasticity in untrained participants. This study aimed to examine the effect of an acute bout of exercise on M1 plasticity in endurance-trained (cyclists) and sedentary individuals. 14 endurance-trained cyclists (mean ± SD; 23 ± 3.8 years) and 14 sedentary individuals (22 ± 1.8 years) performed two experimental sessions. One session included an acute bout of high-intensity interval training (HIIT) exercise involving stationary cycling, while another session involved no-exercise (control). Following exercise (or control), I-wave periodicity repetitive TMS (iTMS) was used (1.5 ms interval, 180 pairs) to induce plasticity within M1. Motor evoked potentials (MEP) induced by single and paired-pulse TMS over M1 were recorded from a hand muscle at baseline, after HIIT (or control) exercise, and after iTMS. Corticospinal and intracortical excitability was not influenced by HIIT exercise in either group (all P > 0.05). There was an increase in MEP amplitude after iTMS, and this was greater after HIIT exercise (compared with control) for all subjects (P < 0.001). However, the magnitude of this response was larger in endurance cyclists compared with the sedentary group (P < 0.05). These findings indicate that M1 plasticity induced by iTMS was greater in endurance-trained cyclists following HIIT. Prior history of exercise training is, therefore, an important consideration for understanding factors that contribute to exercise-induced plasticity. | - |
dc.description.statementofresponsibility | Brodie J. Hand, George M. Opie, Simranjit K. Sidhu and John G. Semmler | - |
dc.language.iso | en | - |
dc.publisher | American Physiological Society | - |
dc.rights | © 2022, Journal of Applied Physiology | - |
dc.source.uri | http://dx.doi.org/10.1152/japplphysiol.00213.2022 | - |
dc.subject | Transcranial magnetic stimulation; exercise; physical activity; plasticity | - |
dc.title | Motor cortex plasticity is greater in endurance-trained cyclists following acute exercise | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1152/japplphysiol.00213.2022 | - |
dc.relation.grant | http://purl.org/au-research/grants/nhmrc/1139723 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Hand, B.J. [0000-0002-9778-343X] | - |
dc.identifier.orcid | Opie, G.M. [0000-0001-7771-7569] | - |
dc.identifier.orcid | Sidhu, S.K. [0000-0002-4797-8298] | - |
dc.identifier.orcid | Semmler, J.G. [0000-0003-0260-8047] | - |
Appears in Collections: | Physiology publications |
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