摘要
目的探讨老年人在执行认知-平衡双任务时平衡能力和大脑皮质激活的特征。方法2023年1月至4月,不定向招募健康老年人20例,佩戴功能性近红外光谱采集帽,自然站于动静态平衡仪上,完成闭眼稳定平面站立(CF)、闭眼稳定平面站立同时进行计算任务(CFc)、睁眼不稳定平面站立(OS)、睁眼不稳定平面站立同时进行计算任务(OSc)、闭眼不稳定平面站立(CS)、闭眼不稳定平面站立同时进行计算任务(CSc)6项任务,动静态平衡仪测量总稳定性指数;设双侧运动前区、感觉运动区和前额叶区为感兴趣区,计算皮质激活β值。结果CFc时总稳定性指数大于CF时(Z=-2.014,P<0.05),CSc时小于CS时(Z=-2.063,P<0.05)。CFc时双侧各感兴趣区β值均大于CF时(|Z|>2.464,|t|>3.733,P<0.05),OSc时均大于OS时(|t|>2.308,P<0.05);CSc时右感觉运动区β值大于CS时(t=-2.912,P<0.05)。CSc时计算正确次数显著小于CFc时和OSc时(|Z|>3.643,P<0.001)。结论老年人双任务下平衡能力下降,大脑皮质激活增加。随着平衡任务难度提升,老年人在双任务下会优先保持姿势平衡,认知表现下降,可能与双任务下大脑皮质激活程度不能进一步增加有关。
Objective To explore the characteristics of balance and cortical activation in older adults when performing cognition-balance dual tasks.Methods From January to April,2023,20 healthy older adults were non-targeted recruited.They completed six tasks of close eyes&fixed platform(CF),close eyes&fixed platform&cognitive task(CFc),open eyes&sway-referenced platform(OS),open eyes&sway-referenced platform&cognitive task(OSc),close eyes&sway-referenced platform(CS),and close eyes&sway-referenced platform&cognitive task(CSc)on the Balance SD,wearing functional near-infrared spectroscopy caps.The overal stability index(OSI)was measured with Balance SD.The premotor cortex(PMC),sensorimotor cortex(SMC)and prefrontal cortex(PFC)were as regions of in‐terest(ROIs),and theβvalues were calculated.Results The OSI was more as CFc than as CF(Z=-2.014,P<0.05),and was less as CSc than as CS(Z=-2.063,P<0.05).Theβvalues of bilateral ROIs were all more as CFc than as CF(|Z|>2.464,|t|>3.733,P<0.05),and as OSc than as OS(|t|>2.308,P<0.05);theβvalue of the right SMC was more as CSc than as CS(t=-2.912,P<0.05).The number of correct counts was less as CSc than as CFc and OSc(|Z|>3.643,P<0.001).Conclusion Balance has been impaired under dual tasks for older adults,while activation of cerebral cortex increases.However,for more difficult balance task,older adults would preferentially maintain postural balance under dual tasks,while cognitive performance decreases,which may be the results from no more activation of cerebral cor‐tex under dual tasks.
作者
阚超杰
郭川
朱仕哲
眭有昕
王庆雷
庄任
耿阿燕
王彤
KAN Chaojie;GUO Chuan;ZHU Shizhe;SUI Youxin;WANG Qinglei;ZHUANG Ren;GENG Ayan;WANG Tong(School of Rehabilitation Medicine,Nanjing Medical University,Nanjing,Jiangsu 210000,China;Changzhou De'an Hospital,Changzhou,Jiangsu 213000,China;The First Affiliated Hospital of Nanjing Medical University,Nanjing,Jiangsu 210000,China)
出处
《中国康复理论与实践》
CSCD
北大核心
2023年第10期1189-1194,共6页
Chinese Journal of Rehabilitation Theory and Practice
基金
国家重点研发计划项目(No.2018YFC2001600,No.2018YFC2001603)
常州市卫健委青年人才科技项目(No.QN202244)。
关键词
老年人
平衡
双任务
皮质激活
功能性近红外光谱技术
older adults
balance
dual task
cortical activation
functional near-infrared spectroscopy
