Whole body heat stress increases motor cortical excitability and skill acquisition in humans
| Autor: | Andrew E. Littmann, Richard K. Shields |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Adult
Male 0301 basic medicine Hot Temperature Central nervous system Pilot Projects Plasticity Article Body Temperature Dreyfus model of skill acquisition Cohort Studies Young Adult 03 medical and health sciences 0302 clinical medicine Physiology (medical) medicine Humans Heat shock Motor skill Motor Cortex Evoked Potentials Motor Sensory Systems Heat stress 030104 developmental biology medicine.anatomical_structure Neurology Motor Skills Female Neurology (clinical) Psychology Motor learning Neuroscience Heat-Shock Response Photic Stimulation 030217 neurology & neurosurgery Motor cortex |
| Zdroj: | Clinical Neurophysiology. 127:1521-1529 |
| ISSN: | 1388-2457 |
| DOI: | 10.1016/j.clinph.2015.11.001 |
| Popis: | Vigorous systemic exercise stimulates a cascade of molecular and cellular processes that enhance central nervous system (CNS) plasticity and performance. The influence of heat stress on CNS performance and learning is novel. We designed two experiments to determine whether passive heat stress (1) facilitated motor cortex excitability and (2) improved motor task acquisition compared to no heat stress.Motor evoked potentials (MEPs) from the first dorsal interosseus (FDI) were collected before and after 30 min of heat stress at 73 °C. A second cohort of subjects performed a motor learning task using the FDI either following heat or the no heat condition.Heat stress increased heart rate to 65% of age-predicted maximum. After heat, mean resting MEP amplitude increased 48% (p0.05). MEP stimulus-response amplitudes did not differ according to stimulus intensity. In the second experiment, heat stress caused a significant decrease in absolute and variable error (p0.05) during a novel movement task using the FDI.Passive environmental heat stress (1) increases motor cortical excitability, and (2) enhances performance in a motor skill acquisition task.Controlled heat stress may prime the CNS to enhance motor skill acquisition during rehabilitation. |
| Databáze: | OpenAIRE |
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