Volume 10, Issue 6 (November & December 2019)                   BCN 2019, 10(6): 631-640 | Back to browse issues page


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Ghorbani M, Ghazalian F, Ebrahim K, Abednatanzi H. Altered Neural Response Induced by Central-Fatigue in the Cortical Area During High-intensity Interval Pedaling. BCN. 2019; 10 (6) :631-640
URL: http://bcn.iums.ac.ir/article-1-1387-en.html
1- Department of Physical Education and Sport Sciences, Faculty of Humanities and Social Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran. & Department of Physical Education and Sport Sciences, Bijar Branch, Islamic Azad University, Bijar, Iran.
2- Department of Physical Education and Sport Sciences, Faculty of Humanities and Social Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran.
3- Department of Physical Education and Sport Sciences, Faculty of Humanities, Shahid Beheshti University, Tehran, Iran.
Abstract:  
Introduction: The central-governor model explains the mechanism of endurance exercise-induced central fatigue, but high-intensity exercise-induced central fatigue has not been investigated yet. This study aimed to research how central fatigue during high-intensity intermittent pedaling alters the neural response, which results in electroencephalography (EEG) recordings.
Methods: We assessed neural response by measuring the alternation of brainwave spectral power during an intermittent high-intensity 60-minute exercise on an ergometer cycle. The cadences were changed every 10 minutes according to intermittent pattern altering (90-120-60-120-60-90 rpm). EEG was used to analyze altering brain function. Heart rate (HR), blood lactate (BL), and rating of perceived exertion (RPE) were measured after the change in cadences.
Results: HR, BL, and RPE increased at a cadence of 120 rpm compared with 60 rpm on the ergometer cycle. The spectral power of EEG, according to cadence × brainwaves, significantly increased (P˂0.01) in the alpha and beta frequency ranges with a change in cadences between 60 rpm and 120 rpm. The spectral power of the EEG significantly increased (P˂0.01) over the whole frequency range from rest to warming (theta: 251%, alpha: 165%, beta: 145%) and significantly reduced in theta, alpha, and beta (theta: 176%, alpha: 142%, beta: 77%) (P≤0.01).
Conclusion: High-intensity exercises (90 and 120 cadences) increased brain function, regardless of fatigue occurrence. High-intensity interval training (HIIT) led to altering the neural response. It would be required to investigate the usefulness of HIIT to treat some of the psychotic disorders.
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Type of Study: Original | Subject: Behavioral Neuroscience
Received: 2018/12/22 | Accepted: 2019/06/30 | Published: 2019/11/1

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