School of Community Health Sciences, University of Nevada, Reno, NV, United States of America. Author to whom any correspondence should be addressed.
Physiol Meas. 2019 Feb 20;40(2):024001. doi: 10.1088/1361-6579/aafcd8.
Postural control deficits have been extensively reported following sport-related concussions. Concussed athletes demonstrate these deficits as early as 24 h post-concussion and may persist for up to six months. Many of these prior studies have included mixed samples with prior injury history that may affect the postural control data. The purpose of this investigation was to evaluate the effect of concussion history on postural control 24-48 h following sport-related concussion in Division I athletes.
Twenty-eight Division I athletes (seven athlete controls (CON), seven no history (SRC0), seven with a previous concussion (SRC1), and seven with 2-3 concussions (SRC3) participated in this study. All participants were assessed within 24-48 h post-subsequent SRC and performed three trials of quiet stance in the eyes closed (EC) conditions for 30 s each on a force platform (1000 Hz). The data were analyzed with root mean square (RMS) and mean excursion velocity (MEV) in the anteroposterior (AP) and mediolateral (ML) directions. Two 3 × 2 MANOVAs were run by direction for group comparisons.
SRC2 had significantly greater RMS than CON, SRC0, and SRC1 in the AP direction and ML direction. SRC2 exhibited significantly greater AP and ML MEV than CON, SRC0, and SRC1.
These results demonstrate that having 2-3 prior concussions negatively affects the postural system after a subsequent head injury. Sports medicine staff should approach the recovery process with caution with those that have a prior history of concussion, due to the negative effects that history of concussion has on postural control strategies.
运动相关性脑震荡后，姿势控制缺陷已被广泛报道。脑震荡运动员在脑震荡后 24 小时内就表现出这些缺陷，并且可能持续长达六个月。许多先前的研究都包含了有先前受伤史的混合样本，这可能会影响姿势控制数据。本研究的目的是评估脑震荡史对 I 级运动员运动相关性脑震荡后 24-48 小时内姿势控制的影响。
28 名 I 级运动员（7 名运动员对照组（CON）、7 名无既往史（SRC0）、7 名有既往脑震荡史（SRC1）和 7 名有 2-3 次脑震荡史（SRC3）参加了这项研究。所有参与者均在后续 SRC 后 24-48 小时内进行评估，并在力平台（1000 Hz）上闭眼（EC）条件下进行 30 秒的 3 次安静站立试验。数据采用均方根（RMS）和前后（AP）和左右（ML）方向的平均偏移速度（MEV）进行分析。通过方向进行了 2 个 3 × 2 的 MANOVA 来进行组间比较。
SRC2 在 AP 和 ML 方向的 RMS 明显大于 CON、SRC0 和 SRC1。SRC2 在 AP 和 ML 方向的 MEV 明显大于 CON、SRC0 和 SRC1。
这些结果表明，有 2-3 次既往脑震荡会对随后的头部受伤后的姿势系统产生负面影响。由于脑震荡史对姿势控制策略的负面影响，运动医学人员在处理有既往脑震荡史的患者时应谨慎对待他们的康复过程。
