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Brain Cortical Activity Is Influenced By Exercise Mode and Intensity.
MedLine Citation:
PMID:  21364475     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
INTRODUCTION:: Previous research suggests that different exercise modes and intensities lead to variations in brain cortical activity. However, due to variability and limitations in previous study designs, the mechanisms behind this link remain unclear. The aim of this study was to evaluate the effects on brain cortical activity that are dependent on exercise mode, intensity and individual preferences, and to localize these changes within the frontal, temporal, parietal and occipital cortexes of the brain. METHODS:: 12 runners were asked to perform four modes of exercise (treadmill, bicycle, arm crank, and isokinetic wrist flexions); each at 50% and 80% of their individual maximum capacity. In a second experiment, 5 handcycling athletes completed an arm crank exercise protocol. Electrocortical activity was recorded for 5 min under rest conditions, before and after exercise. Standardized low-resolution brain electromagnetic tomography (sLORETA) was used to localize changes in electroencephalographic alpha and beta frequency ranges within the brain. RESULTS:: We found effects of exercise mode and intensity. Moderate intensity exercise (50% maximum) was followed by an increase in alpha activity in either somatosensory brain areas following "familiar exercise", or in emotional areas following "unfamiliar exercise" modes. Following high-intensity exercise, changes in alpha and beta frequencies were observed, which also seem to be specific to individual exercise familiarization/preference. When runners completed intense running, and handcyclists the intense arm crank exercise, we observed reductions of frontal beta activity indicating a deactivation of emotional brain regions. CONCLUSION:: In conclusion, these findings demonstrate that cortical activation patterns depend on exercise mode and intensity and that individual exercise preferences may contribute to the positive psycho-physiological response.
Authors:
Vera Brümmer; Stefan Schneider; Thomas Abel; Tobias Vogt; Heiko K Strüder
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-2-28
Journal Detail:
Title:  Medicine and science in sports and exercise     Volume:  -     ISSN:  1530-0315     ISO Abbreviation:  -     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-3-2     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8005433     Medline TA:  Med Sci Sports Exerc     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Dept. of Exercise Neuroscience, Institute of Movement and Neurosciences, German Sport University Cologne.
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