MR spectroscopy findings in retired professional rugby league players

Andrew J. Gardner, Grant L. Iverson, Magdalena Wojtowicz, Christopher R. Levi, Frances Kay-Lambkin, Peter W. Schofield, Ross Zafonte, Sandy R. Shultz, Alexander P. Lin, Peter Stanwell

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The aim of this study was to examine brain neurometabolite concentrations in retired rugby league players who had a history of numerous self-reported concussions. Participants were 16 retired professional rugby league players (ages 30-45 years) with an extensive history of concussion and participation in contact sports, and 16 age- and education-matched controls who had no history of neurotrauma or participation in contact sports. All completed a clinical interview, psychological and cognitive testing, and magnetic resonance spectroscopy (MRS) investigation. MRS voxels were placed in posterior cingulate grey matter and parietal white matter. Neurometabolite concentrations were quantified using LCModel. It was hypothesized that retired athletes would differ on N-acetyl aspartate, myo-inositol, choline, glutamate, and glutathione. Retired players had significantly lower concentrations of grey matter glutathione (p=0.02, d=0.91). They did not significantly differ in concentrations of other neurometabolites. There were no significant differences between groups on measures of depression, anxiety, or cognitive functioning. The retired athletes reported significantly greater alcohol use (p<0.01; Cohen's d=1.49), and they had worse manual dexterity using their non-dominant hand (p=0.03; d=1.08). These preliminary findings suggest that MRS might be modestly sensitive to biochemical differences in athletes after their athletic careers have ended in the absence of clinical differences in cognitive performance and self-reported psychological functioning.

Original languageEnglish
Pages (from-to)241-252
Number of pages12
JournalInternational Journal of Sports Medicine
Volume38
Issue number3
DOIs
Publication statusPublished - 1 Mar 2017
Externally publishedYes

Keywords

  • concussion
  • neuroimaging
  • retired athletes
  • spectroscopy

Cite this

Gardner, A. J., Iverson, G. L., Wojtowicz, M., Levi, C. R., Kay-Lambkin, F., Schofield, P. W., ... Stanwell, P. (2017). MR spectroscopy findings in retired professional rugby league players. International Journal of Sports Medicine, 38(3), 241-252. https://doi.org/10.1055/s-0042-120843
Gardner, Andrew J. ; Iverson, Grant L. ; Wojtowicz, Magdalena ; Levi, Christopher R. ; Kay-Lambkin, Frances ; Schofield, Peter W. ; Zafonte, Ross ; Shultz, Sandy R. ; Lin, Alexander P. ; Stanwell, Peter. / MR spectroscopy findings in retired professional rugby league players. In: International Journal of Sports Medicine. 2017 ; Vol. 38, No. 3. pp. 241-252.
@article{42797510908d49c6b4be1acc902892ed,
title = "MR spectroscopy findings in retired professional rugby league players",
abstract = "The aim of this study was to examine brain neurometabolite concentrations in retired rugby league players who had a history of numerous self-reported concussions. Participants were 16 retired professional rugby league players (ages 30-45 years) with an extensive history of concussion and participation in contact sports, and 16 age- and education-matched controls who had no history of neurotrauma or participation in contact sports. All completed a clinical interview, psychological and cognitive testing, and magnetic resonance spectroscopy (MRS) investigation. MRS voxels were placed in posterior cingulate grey matter and parietal white matter. Neurometabolite concentrations were quantified using LCModel. It was hypothesized that retired athletes would differ on N-acetyl aspartate, myo-inositol, choline, glutamate, and glutathione. Retired players had significantly lower concentrations of grey matter glutathione (p=0.02, d=0.91). They did not significantly differ in concentrations of other neurometabolites. There were no significant differences between groups on measures of depression, anxiety, or cognitive functioning. The retired athletes reported significantly greater alcohol use (p<0.01; Cohen's d=1.49), and they had worse manual dexterity using their non-dominant hand (p=0.03; d=1.08). These preliminary findings suggest that MRS might be modestly sensitive to biochemical differences in athletes after their athletic careers have ended in the absence of clinical differences in cognitive performance and self-reported psychological functioning.",
keywords = "concussion, neuroimaging, retired athletes, spectroscopy",
author = "Gardner, {Andrew J.} and Iverson, {Grant L.} and Magdalena Wojtowicz and Levi, {Christopher R.} and Frances Kay-Lambkin and Schofield, {Peter W.} and Ross Zafonte and Shultz, {Sandy R.} and Lin, {Alexander P.} and Peter Stanwell",
year = "2017",
month = "3",
day = "1",
doi = "10.1055/s-0042-120843",
language = "English",
volume = "38",
pages = "241--252",
journal = "International Journal of Sports Medicine",
issn = "0172-4622",
publisher = "Thieme Publishing",
number = "3",

}

Gardner, AJ, Iverson, GL, Wojtowicz, M, Levi, CR, Kay-Lambkin, F, Schofield, PW, Zafonte, R, Shultz, SR, Lin, AP & Stanwell, P 2017, 'MR spectroscopy findings in retired professional rugby league players' International Journal of Sports Medicine, vol. 38, no. 3, pp. 241-252. https://doi.org/10.1055/s-0042-120843

MR spectroscopy findings in retired professional rugby league players. / Gardner, Andrew J.; Iverson, Grant L.; Wojtowicz, Magdalena; Levi, Christopher R.; Kay-Lambkin, Frances; Schofield, Peter W.; Zafonte, Ross; Shultz, Sandy R.; Lin, Alexander P.; Stanwell, Peter.

In: International Journal of Sports Medicine, Vol. 38, No. 3, 01.03.2017, p. 241-252.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - MR spectroscopy findings in retired professional rugby league players

AU - Gardner, Andrew J.

AU - Iverson, Grant L.

AU - Wojtowicz, Magdalena

AU - Levi, Christopher R.

AU - Kay-Lambkin, Frances

AU - Schofield, Peter W.

AU - Zafonte, Ross

AU - Shultz, Sandy R.

AU - Lin, Alexander P.

AU - Stanwell, Peter

PY - 2017/3/1

Y1 - 2017/3/1

N2 - The aim of this study was to examine brain neurometabolite concentrations in retired rugby league players who had a history of numerous self-reported concussions. Participants were 16 retired professional rugby league players (ages 30-45 years) with an extensive history of concussion and participation in contact sports, and 16 age- and education-matched controls who had no history of neurotrauma or participation in contact sports. All completed a clinical interview, psychological and cognitive testing, and magnetic resonance spectroscopy (MRS) investigation. MRS voxels were placed in posterior cingulate grey matter and parietal white matter. Neurometabolite concentrations were quantified using LCModel. It was hypothesized that retired athletes would differ on N-acetyl aspartate, myo-inositol, choline, glutamate, and glutathione. Retired players had significantly lower concentrations of grey matter glutathione (p=0.02, d=0.91). They did not significantly differ in concentrations of other neurometabolites. There were no significant differences between groups on measures of depression, anxiety, or cognitive functioning. The retired athletes reported significantly greater alcohol use (p<0.01; Cohen's d=1.49), and they had worse manual dexterity using their non-dominant hand (p=0.03; d=1.08). These preliminary findings suggest that MRS might be modestly sensitive to biochemical differences in athletes after their athletic careers have ended in the absence of clinical differences in cognitive performance and self-reported psychological functioning.

AB - The aim of this study was to examine brain neurometabolite concentrations in retired rugby league players who had a history of numerous self-reported concussions. Participants were 16 retired professional rugby league players (ages 30-45 years) with an extensive history of concussion and participation in contact sports, and 16 age- and education-matched controls who had no history of neurotrauma or participation in contact sports. All completed a clinical interview, psychological and cognitive testing, and magnetic resonance spectroscopy (MRS) investigation. MRS voxels were placed in posterior cingulate grey matter and parietal white matter. Neurometabolite concentrations were quantified using LCModel. It was hypothesized that retired athletes would differ on N-acetyl aspartate, myo-inositol, choline, glutamate, and glutathione. Retired players had significantly lower concentrations of grey matter glutathione (p=0.02, d=0.91). They did not significantly differ in concentrations of other neurometabolites. There were no significant differences between groups on measures of depression, anxiety, or cognitive functioning. The retired athletes reported significantly greater alcohol use (p<0.01; Cohen's d=1.49), and they had worse manual dexterity using their non-dominant hand (p=0.03; d=1.08). These preliminary findings suggest that MRS might be modestly sensitive to biochemical differences in athletes after their athletic careers have ended in the absence of clinical differences in cognitive performance and self-reported psychological functioning.

KW - concussion

KW - neuroimaging

KW - retired athletes

KW - spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=85012870578&partnerID=8YFLogxK

U2 - 10.1055/s-0042-120843

DO - 10.1055/s-0042-120843

M3 - Article

VL - 38

SP - 241

EP - 252

JO - International Journal of Sports Medicine

JF - International Journal of Sports Medicine

SN - 0172-4622

IS - 3

ER -

Gardner AJ, Iverson GL, Wojtowicz M, Levi CR, Kay-Lambkin F, Schofield PW et al. MR spectroscopy findings in retired professional rugby league players. International Journal of Sports Medicine. 2017 Mar 1;38(3):241-252. https://doi.org/10.1055/s-0042-120843