Shah Garima, Oates Alison R, Arora Tarun, Lanovaz Joel L, Musselman Kristin E
a SCI Mobility Lab , Toronto Rehabilitation Institute-University Health Network , Toronto , ON.
b College of Kinesiology, University of Saskatchewan , Saskatoon , SK.
J Spinal Cord Med. 2017 Nov;40(6):768-776. doi: 10.1080/10790268.2017.1369212. Epub 2017 Sep 6.
CONTEXT/OBJECTIVE: The study objectives were to evaluate the test-retest reliability, convergent validity, and discriminative validity of the Activities-specific Balance Confidence (ABC) scale in individuals with incomplete spinal cord injury (iSCI).
Prospective, cross-sectional study.
Laboratory.
Twenty-six community-dwelling individuals with chronic iSCI (20 males, 59.7 + 18.9 years old) and 26 age- and sex-matched able-bodied (AB) individuals participated.
None.
Measures of balance and gait were collected over two days. Clinical measures included the ABC scale, Mini-Balance Evaluation System's Test, 10-meter Walk Test, SCI Functional Ambulation Profile, manual muscle testing of lower extremity muscles, and measures of lower extremity proprioception and cutaneous pressure sensitivity. Biomechanical measures included the velocity and sway area of centre of pressure (COP) movement during quiet standing.
The ABC scale demonstrated high test-retest reliability (intraclass correlation coefficient = 0.93) among participants with iSCI. The minimal detectable change was 14.87%. ABC scale scores correlated with performance on all clinical measures (ρ=0.60-0.80, P<0.01), with the exception of proprioception and cutaneous pressure sensitivity (P=0.20-0.70), demonstrating convergent validity. ABC scale scores also correlated with overall COP velocity (ρ=-0.69, P<0.001) and COP velocity in the anterior-posterior direction (ρ=-0.71, P<0.001). Participants with iSCI scored significantly lower on the ABC scale than the AB participants (P<0.001), and the area under the receiver operating characteristic curve was 0.95, demonstrating discriminative validity.
The ABC scale is a reliable and valid measure of balance confidence in community-dwelling, ambulatory individuals with chronic iSCI.
背景/目的：本研究旨在评估特定活动平衡信心（ABC）量表在不完全性脊髓损伤（iSCI）个体中的重测信度、收敛效度和区分效度。
前瞻性横断面研究。
实验室。
26名社区居住的慢性iSCI个体（20名男性，年龄59.7±18.9岁）和26名年龄及性别匹配的健全个体参与研究。
无。
在两天内收集平衡和步态测量数据。临床测量包括ABC量表、迷你平衡评估系统测试、10米步行测试、SCI功能性步行概况、下肢肌肉的徒手肌力测试以及下肢本体感觉和皮肤压力敏感性测量。生物力学测量包括安静站立时压力中心（COP）运动的速度和摆动面积。
ABC量表在iSCI参与者中显示出较高的重测信度（组内相关系数=0.93）。最小可检测变化为14.87%。ABC量表得分与所有临床测量指标的表现相关（ρ=0.60 - 0.80，P<0.01），但本体感觉和皮肤压力敏感性除外（P=0.20 - 0.70），显示出收敛效度。ABC量表得分还与总体COP速度（ρ=-0.69，P<0.001）和前后方向的COP速度（ρ=-0.71，P<0.001）相关。iSCI参与者在ABC量表上的得分显著低于健全参与者（P<0.001），受试者工作特征曲线下面积为0.95，显示出区分效度。
ABC量表是评估社区居住的慢性iSCI能行走个体平衡信心的可靠且有效的指标。
