大学スポーツ後の5年間で脳震盪の回数が増えるほど脳の健康状態が悪化する(More concussions equal worse brain health 5 years after college sports)

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2026-03-12  ミシガン大学

University of Michigan研究チームは、大学スポーツ脳震盪(コンカッション)回数長期健康関係調査した。大学アスリート対象卒業5時点健康状態分析した結果、脳震盪経験回数多いほど認知機能低下、うつ症状、生活低下など顕著なる傾向確認た。また、複数脳震盪経験した選手では神経学的症状リスク高まることた。研究は、競技脳震盪予防早期対応、長期健康管理重要性示し、学生アスリート安全対策強化必要性示唆いる。

大学スポーツ後の5年間で脳震盪の回数が増えるほど脳の健康状態が悪化する(More concussions equal worse brain health 5 years after college sports)

<関連情報>

元大学アスリートにおけるスポーツ関連の頭部外傷特性と健康転帰: CAREコンソーシアム研究 Sport-Related Head Exposure Characteristics and Health Outcomes in Former Collegiate Athletes A CARE Consortium Study

Adrian J. Boltz, Landon B. Lempke, Reid Syrydiuk, Allyssa K. Memmini, Chengyun Li, Jie Ren, Susan M. Perkins, … Show All … for the CARE Consortium Investigators
Neurology  Published:March 11, 2026
DOI:https://doi.org/10.1212/WNL.0000000000214783

Abstract

Background and Objectives

Sport-related head exposure characteristics (i.e., concussion history, sport contact classification, and total years of sport participation) are suggested to be associated with short-term and long-term health outcomes in competitive athletes. However, their relationship with intermediate health outcomes (specifically within 5 years of collegiate sport retirement) remains unknown. Therefore, we examined associations between sport-related head exposure characteristics and physical, mental, cognitive, and behavioral health measures among former collegiate athletes.

Methods

Former collegiate athletes who completed a baseline evaluation between 2018 and 2021 and were evaluated within 5 years of collegiate graduation were included. Primary predictors included lifetime concussion history (0 [referent], 1–2, 3+), sport contact classification (unexposed [ref.], low, high), and total years of sport participation (continuous). Outcome measures collected included the Alcohol Use Disorders Identification Test, Brief Symptom Inventory-18 (BSI-18), Neuro-Quality of Life cognitive domain (Neuro-QoL), Patient Health Questionnaire (PHQ-9), Pittsburgh Sleep Quality Index (PSQI), Sport Concussion Assessment Tool (SCAT) symptom inventory, 12-Item Short Form Survey (SF-12), and Satisfaction with Life Scale. Twelve multivariable linear regression models with bootstrapping were constructed, with adjusted unstandardized beta coefficients (BAdj) and standard errors (SEs) estimated.

Results

Overall, 3,910 former collegiate student-athletes were examined; 48.6% were female, 73.0% attended a Division I school, 36.2% self-reported ≥1 lifetime diagnosed concussion, 38.1% participated in a high-exposure sport, and the median years since college graduation to assessment was 5.0. Independently, scores of BSI anxiety (BAdj = 1.24, SE = 0.36), BSI depression (BAdj = 0.88, SE = 0.37), global severity index [GSI] (BAdj = 2.66, SE = 0.91), PHQ-9 (BAdj = 1.34, SE = 0.40), PSQI (BAdj = 0.69, SE = 0.29), SCAT total symptom severity (BAdj = 5.14, SE = 1.31), and SF-12 mental composite score (BAdj = −3.39, SE = 0.83) were worse in athletes with 3+ concussions compared with athletes without a history of concussion. Athletes with 1–2 concussions vs no concussion history similarly had worse scores independently for BSI-18 GSI (BAdj = 0.88, SE = 0.35), anxiety (BAdj = 0.40, SE = 0.15), Neuro-QoL (BAdj = −0.97, SE = 0.36), PHQ-9 (BAdj = 0.77, SE = 0.19), PSQI (BAdj = 0.27, SE = 0.13), SCAT total symptom severity (BAdj = 2.13, SE = 0.55), and SF-12 mental composite score (BAdj = −1.80, SE = 0.41).

Discussion

Lifetime concussion history was the most common predictor of adverse self-reported health outcomes compared with other exposure characteristics, within 5 years of collegiate sport retirement. Despite the associations, most former athletes remained within normal clinical levels during this early postretirement period.

医療・健康
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