Objective: To determine the influence of a cognitive dual task on postural sway and balance errors during the Concussion Balance Test (COBALT). Methods: Twenty healthy adults (12 females, eight males; aged 21.95 ± 3.77 years; height = 169.95 ± 9.95 cm; weight = 69.58 ± 15.03 kg) partook in this study and completed single- and dual-task versions of a reduced COBALT. Results: Sway velocity decreased during dual-task head rotations on foam condition (p = .021, ES = −0.57). A greater number of movement errors occurred during dual-task head rotations on firm surface (p = .005, ES = 0.71), visual field flow on firm surface (p = .008, ES = 0.68), and head rotations on foam surface (p < .001, ES = 1.61) compared with single-task conditions. Cognitive performance was preserved throughout different sensory conditions of the COBALT (p = .985). Discussion: Cognitive dual tasks influenced postural control and destabilized movements during conditions requiring advanced sensory integration and reweighting demands. Dual-task versions of the COBALT should be explored as a clinical tool to identify residual deficits past the acute stages of concussion recovery.

目的：确定脑震荡平衡测试（COBALT）中认知双重任务对姿势摇摆和平衡误差的影响。方法： 20名健康成年人（12名女性，8名男性；年龄21.95±3.77岁；身高= 169.95±9.95 cm；体重= 69.58±15.03 kg）参加了这项研究，并完成了减少COBALT的单任务和双任务方案。结果：在泡沫条件下双任务头旋转期间摇摆速度降低（ p  = .021，ES = -0.57）。在坚硬表面上进行双任务头旋转时，发生大量运动错误（ p  = .005，ES = 0.71），在坚硬表面上出现了视野流动（ p = 0.008，ES = 0.68），并且 与单任务条件相比，泡沫表面上的头部旋转（p <.001，ES = 1.61）。在COBALT的所有不同感官条件下，认知能力得以保持（p  = .985）。讨论：在需要高级感官整合和重新称重的情况下，认知双重任务影响了姿势控制和不稳定的动作。应探索双任务版本的COBALT作为临床工具，以识别脑震荡恢复急性期后的残余缺陷。