Objective

To characterize recovery of balance deficits in community-dwelling adults with concussion.

Hypothesis

Balance measures will improve 2 weeks after injury and persist over 12 weeks.

Design

Prospective longitudinal observational study.

Methods

Assessments included the Balance Error Scoring System (BESS) and quiet standing during eyes open, eyes closed, and a cognitive dual task. Recovery was determined using a Hierarchical Growth Curve Model (HGCM) at Week1 (n = 61), Week2 (n = 58), Week4 (n = 53), Week8 (n = 51), and Week12 (n = 39) post-injury. Within-individual follow-up analysis was conducted using the coefficient of variation (quiet standing measures) and a reliable change index (BESS) on 28 individuals with concussion assessed at all 5 time points.

Results

Self-reported symptom score recovered between Week 4–8. Anteroposterior COP velocity (eyes closed) was the only variable to show statistically significant (p < .05) recovery in the HGCM. The within-individual analysis identified fewer than 43% (12/28) of participants recovered by Week 12, relative to their own Week 1 assessment.

Conclusions

While recovery of balance deficits was observed in 1 variable over 12 weeks, less than half of the participants included in all assessments demonstrated improvement in balance outcomes. Future research and clinical practice should focus on the unique characteristics of community-dwelling adults with concussion to optimize recovery in this cohort.

中文翻译：

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多伦多脑震荡研究：对居住在社区的成年人进行脑震荡后的平衡赤字的纵向分析。

目的

表征脑震荡在社区居住的成年人中平衡缺陷的恢复。

假设

平衡措施将在受伤后2周改善，并持续12周以上。

设计

前瞻性纵向观察研究。

方法

评估包括平衡误差评分系统（BESS）以及睁眼，闭眼和认知双重任务时的安静站立。在恢复后的第1周（n = 61），第2周（n = 58），第4周（n = 53），第8周（n = 51）和第12周（n = 39），使用分层增长曲线模型（HGCM）确定恢复。受伤。使用变异系数（静站测度）和可靠变化指数（BESS）对28个个体进行了内部随访分析，并在所有5个时间点评估了脑震荡。

结果

自我报告的症状评分在第4-8周之间恢复。HGCM中，前后COP速度（闭眼）是唯一显示出统计学上显着（p <.05）恢复的变量。相对于他们自己的第1周评估，个人内部分析发现到第12周康复的参与者不到43％（12/28）。

结论

虽然在12周内有1个变量观察到了平衡赤字的恢复，但所有评估中不到一半的参与者表现出平衡结局的改善。未来的研究和临床实践应关注脑震荡的社区居民成年人的独特特征，以优化该队列的康复。