Multiparameter cortical surface morphology in former amateur contact sport athletes

Author:

Recht Grace1,Hou Jiancheng12,Buddenbaum Claire1,Cheng Hu34,Newman Sharlene D5ORCID,Saykin Andrew J67ORCID,Kawata Keisuke148ORCID

Affiliation:

1. Indiana University School of Public Health-Bloomington Department of Kinesiology, , 1025 E. 10th Street, Bloomington, IN 47405, United States

2. Fujian Normal University Research Center for Cross-Straits Cultural Development, , Cangshan Campus, No. 8 Shangshan Road, Cangshan District, Fuzhou, Fujian 350007, China

3. Indiana University Department of Psychological and Brain Sciences, College of Arts and Sciences, , 1101 E. 10th Street, Bloomington, IN 47405, United States

4. Indiana University Program in Neuroscience, The College of Arts and Sciences, , 1101 East 10th Street, Bloomington, IN 47405, United States

5. University of Alabama Alabama Life Research Institute, College of Arts & Sciences, , 211 Peter Bryce Blvd., Tuscaloosa, AL 35401, United States

6. Indiana University School of Medicine Indiana Alzheimer’s Disease Research Center, , 355 West 16th Street, Indianapolis, IN 46202, United States

7. Indiana University School of Medicine Department of Radiology and Imaging Sciences, , 550 University Blvd, Indianapolis, IN 46202, United States

8. Indiana University School of Medicine Department of Pediatrics, , 1130 W Michigan St, Indianapolis, IN 46202, United States

Abstract

Abstract The lifetime effects of repetitive head impacts have captured considerable public and scientific interest over the past decade, yet a knowledge gap persists in our understanding of midlife neurological well-being, particularly in amateur level athletes. This study aimed to identify the effects of lifetime exposure to sports-related head impacts on brain morphology in retired, amateur athletes. This cross-sectional study comprised of 37 former amateur contact sports athletes and 21 age- and sex-matched noncontact athletes. High-resolution anatomical, T1 scans were analyzed for the cortical morphology, including cortical thickness, sulcal depth, and sulcal curvature, and cognitive function was assessed using the Dementia Rating Scale-2. Despite no group differences in cognitive functions, the contact group exhibited significant cortical thinning particularly in the bilateral frontotemporal regions and medial brain regions, such as the cingulate cortex and precuneus, compared to the noncontact group. Deepened sulcal depth and increased sulcal curvature across all four lobes of the brain were also notable in the contact group. These data suggest that brain morphology of middle-aged former amateur contact athletes differs from that of noncontact athletes and that lifetime exposure to repetitive head impacts may be associated with neuroanatomical changes.

Funder

Indiana State Department of Health

National Institutes of Health—National Institute of Neurological Disorders and Stroke

Publisher

Oxford University Press (OUP)

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