The effects of working memory updating tasks on joint coordinationability in individuals with functional ankle instability

摘要：

[目的]探讨工作记忆更新任务联合落地任务(认知-运动双任务，CMDT)对单侧功能性踝关节不稳(FAD)者单腿落地时下肢关节间协调能力及下肢刚度(K_leg)的影响.[方法]单侧FAI者与健康者对照.计算髋-膝、膝-踝关节对相对相位的绝对平均值(M)与偏差相位(D)以量化协调特征，并计算K_leg评估整体动力学策略.采用2(任务)X2(组别)混合方差分析进行统计比较.[结果]1)在CMDT下的髋-膝指标，FAI组比无认知任务落地的D更大(p=0.007),在无认知任务落地状态下FAI组比对照组的D小(p=0.004);2)各状态下,FAI组的M都小于对照组(p=0.008);3)FAI组的膝-踝指标M(p=0.006)与D(p=0.032)均低于对照组:4)未观察到K_leg指标的统计学差异(p>0.05).[结论]CMDT会损害FAI者近端(髋-膝)关节的协调稳定性，远端(滕-踝)协调则表现为结构性僵化且对认知负荷不敏感.FAI者可能通过异常代偿维持宏观力学稳定，但这以牺牲局部协调效率为代价.增加了神经控制负荷与潜在损伤风险，凸显了评估与康复中引人认知负荷的重要性。

[Objective] To investigate the effects of a working memory updating task combined with a landing task( cognitive-motor dual-task, CMDT) on lower limb interjoint coordination capabilities and leg stiffness(K_leg) during single-leg land-ing in individuals with unilateral functional ankle instability (FAI). [Methods] The Mean Absolute Relative Phase(M) and De-viation Phase (D) of the hip-knee and knee-ankle joint pairs were calculated to quantify coordination characteristics, and K_leg was calculated to assess the overall kinetic strategy. A 2(task) X2(group) mixed measures ANOVA was used for statistical comparison. [Results] Under the CMDT condition, hip-knee D of the FAI group was greater in Single-task Landing(p=0.007). The hip-knee M of the FAI group was lower than the control group (p=0.008), Similarly. both the knee-ankle M and knee-ankle D in the FAI group were lower than those of the control group(p=0.006, p=0.032). No statistical differences were observed in K_leg indices(p>0.05). [Conclusion] CMDT impairs the coordination stability of proximal joints in individuals with FAI, while distal coordination exhibits structural rigidity. Individuals with FAI may maintain macroscopic stability through abnormal compensatory strategies, sacrificing local coordination efficiency and increasing neural load and injury risk.

作者：

王子龙，崔慧子，卢杰，孟令越，吕默然，张秋霞，王向东

Wang Zilong, Cui Huizi, Lu Jie, Meng Lingyue, Li Moran, Zhang Qiuxia, Wang Xiangdong

机构地区：

集美大学体育学院；苏州大学体育学院,

引用本文：

王子龙，崔慧子，卢杰等.工作记忆更新任务对功能性踝关节不稳者关节协调能力的影响[J].河南师范大学学报(自然科学版).2026.54(5):142-148.(Wang Zilong. Cui Huizi.Lu Jie.et al.The effects of working memory updating tasks on joint coordination ability in individuals with functional ankle instability[J].Journal of Henan Normal University(Natural Science Edition).2026.54(5):142-148.DOI:10.16366/j.cnki.1000-2367.2025.12.15.0001.)

基金：

国家社会科学基金

关键词：

功能性踝关节不稳；认知-运动双任务；关节协调；落地生物力学；工作记忆

functional ankle instability; cognitive motor dual-task; joint coordination; landing biomechanics; working memory

分类号：

G804.6

工作记忆更新任务对功能性踝关节不稳者关节协调能力的影响.pdf