Gera Geetanjali, Chesnutt Jim, Mancini Martina, Horak Fay B, King Laurie A
Department of Rehabilitation Sciences, University of Kentucky, 900 South Limestone, Lexington, KY 40536.
Department of Orthopedics and Rehabilitation, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239.
Mil Med. 2018 Mar 1;183(suppl_1):327-332. doi: 10.1093/milmed/usx162.
Optimal balance control requires a complex integration of sensory information from the visual, vestibular, and proprioceptive systems. The goal of this study is to determine if the instrumented modified Clinical Test of Sensory Integration and Balance (mCTSIB) was impaired acutely after mild traumatic brain injury (mTBI) when postural sway under varying sensory conditions was measured with a wearable inertial sensor.
Postural sway was assessed in athletes who had sustained a mTBI within the past 2-3 d (n = 38) and control athletes (n = 81). Postural sway was quantified with a wearable inertial sensor (Opal; APDM, Inc.) during four varying sensory conditions of quiet stance: (1) eyes open (EO) firm surface, (2) eyes closed (EC) firm surface, (3) eyes open (EO) foam surface, and (4) eyes closed (EC) foam surface. Sensory reweighting deficits were computed by comparing the postural sway area in eyes closed versus eyes open conditions for firm and foam condition.
Postural sway was higher for mTBI compared with the control group during three of the four conditions of instrumented mCTSIB (EO firm, EC firm, and EC foam; p < 0.05). Sensory reweighting deficits were evident for mTBI individuals compared with control group on foam surface (EC firm vs EO firm; p < 0.05) and not on firm surface (EC firm vs EO firm; p = 0.63).
The results from this study highlight the importance of detecting postural sway deficits during sensorimotor integration in mild TBI individuals.
最佳平衡控制需要视觉、前庭和本体感觉系统的感觉信息进行复杂整合。本研究的目的是确定当使用可穿戴惯性传感器测量不同感觉条件下的姿势摆动时，轻度创伤性脑损伤（mTBI）后仪器化改良感觉统合与平衡临床测试（mCTSIB）是否会急性受损。
对过去2 - 3天内发生mTBI的运动员（n = 38）和对照运动员（n = 81）进行姿势摆动评估。在安静站立的四种不同感觉条件下，使用可穿戴惯性传感器（Opal；APDM公司）对姿势摆动进行量化：（1）睁眼（EO）在坚实表面，（2）闭眼（EC）在坚实表面，（3）睁眼（EO）在泡沫表面，（4）闭眼（EC）在泡沫表面。通过比较坚实和泡沫条件下闭眼与睁眼条件下的姿势摆动面积来计算感觉重新加权缺陷。
在仪器化mCTSIB的四种条件中的三种条件下（EO坚实、EC坚实和EC泡沫；p < 0.05），mTBI组的姿势摆动高于对照组。与对照组相比，mTBI个体在泡沫表面（EC坚实与EO坚实；p < 0.05）而非坚实表面（EC坚实与EO坚实；p = 0.63）存在明显的感觉重新加权缺陷。
本研究结果突出了在轻度TBI个体的感觉运动整合过程中检测姿势摆动缺陷的重要性。
