Modulations of corticospinal excitability following rapid ankle dorsiflexion in skill- and endurance-trained athletes
Hu, N., Avela, J., Kidgell, D. J., Piirainen, J. M., & Walker, S. (2022). Modulations of corticospinal excitability following rapid ankle dorsiflexion in skill- and endurance-trained athletes. European Journal of Applied Physiology, 122(9), 2099-2109. https://doi.org/10.1007/s00421-022-04981-9
Published in
European Journal of Applied PhysiologyDate
2022Copyright
© The Author(s) 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 facilitation/inhibition differently between skill- and endurance-trained athletes. This study investigated modulation of corticospinal excitability following rapid ankle dorsiflexion between well-trained skill and endurance athletes.
Methods
Ten skill- and ten endurance-trained athletes participated in the study. Corticospinal excitability was tested by single- and paired-pulse transcranial magnetic stimulations (TMS) at three different latencies following passive rapid ankle dorsiflexion. Motor evoked potential (MEP), short-latency intracortical inhibition (SICI), intracortical facilitation (ICF), and long-latency intracortical inhibition (LICI) were recorded by surface electromyography from the soleus muscle.
Results
Compared to immediately before ankle dorsiflexion (Onset), TMS induced significantly greater MEPs during the supraspinal reaction period (~ 120 ms after short-latency reflex, SLR) in the skill group only (from 1.7 ± 1.0 to 2.7 ± 1.8%M-max, P = 0.005) despite both conditions being passive. ICF was significantly greater over all latencies in skill than endurance athletes (F (3, 45) = 4.64, P = 0.007), although no between-group differences for stimulations at specific latencies (e.g., at SLR) were observed.
Conclusion
The skill group showed higher corticospinal excitability during the supraspinal reaction phase, which may indicate a “priming” of corticospinal excitability following rapid ankle dorsiflexion for a supraspinal reaction post-stretch, which appears absent in endurance-trained athletes.
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SpringerISSN Search the Publication Forum
1439-6319Keywords
Publication in research information system
https://converis.jyu.fi/converis/portal/detail/Publication/147376080
Metadata
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- Liikuntatieteiden tiedekunta [3130]
Additional information about funding
Open Access funding provided by University of Jyväskylä (JYU). The corresponding author is funded by China Scholarship Council. (Funding number: 201806520024)License
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