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BMC Neurology
Published in: BMC Neurology 1/2013

Open Access 01-12-2013 | Research article

Motor system alterations in retired former athletes: the role of aging and concussion history

Authors: Louis De Beaumont, Sébastien Tremblay, Luke C Henry, Judes Poirier, Maryse Lassonde, Hugo Théoret

Published in: BMC Neurology | Issue 1/2013

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Abstract

Background

Retired athletes with a history of sports concussions experience cognitive and motor declines with aging, and the risk of severe neurodegenerative conditions is magnified in this population. The present study investigated the effects of aging on motor system metabolism and function in former university-level athletes who sustained their last concussion several decades prior to testing.

Methods

To test the hypothesis that age and remote concussions induce functional as well as metabolic alterations of the motor system, we used proton magnetic resonance spectroscopy to detect metabolic abnormalities in the primary motor cortex and the serial reaction time task (SRTT) to evaluate motor learning.

Results

Our results indicate that motor learning is significantly reduced in former concussed athletes relative to controls. In addition, glutamate/H2O ratio in M1 was disproportionately reduced in concussed athletes with advancing age and was found to strongly correlate with motor learning impairments.

Conclusion

Findings from this study provide evidence that the acquisition of a repeated motor sequence is compromised in the aging concussed brain and that its physiological underpinnings could implicate disproportionate reductions of M1 glutamate concentrations with advancing age.
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Metadata
Title
Motor system alterations in retired former athletes: the role of aging and concussion history
Authors
Louis De Beaumont
Sébastien Tremblay
Luke C Henry
Judes Poirier
Maryse Lassonde
Hugo Théoret
Publication date
01-12-2013
Publisher
BioMed Central
Published in
BMC Neurology / Issue 1/2013
Electronic ISSN: 1471-2377
DOI
https://doi.org/10.1186/1471-2377-13-109

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