协和医学杂志2025，Vol.16Issue(3)：598-605,8.DOI:10.12290/xhyxzz.2025-0170
静态平衡能力对不同任务介入下老年人步行双任务成本的影响
Effect of Static Balance Ability on Dual-Task Costs Under Different Walking Task Interventions in Chinese Older Adults
摘要
Abstract
Objective To compare gait parameters during single-task and dual-task walking in older adults,and to examine differences in dual-task costs between individuals with high versus low balance abilities under different task conditions.Methods From November to December 2024,community-dwelling older adults were recruited through Hebei Province's national physical fitness monitoring network across multiple communities in Shijiazhuang and Xiong'an New Area.An inertial sensor-based gait analysis system was used to collect spatio-temporal gait parameters during three conditions:single-task walking,motor dual-task walking(simultaneous car-rying task),and cognitive dual-task walking(serial subtraction task).Participants were stratified into high-bal-ance and low-balance groups based on median eyes-closed single-leg stance duration(cut-off:18.40 seconds).Dual-task costs(DTC)were calculated and compared between groups.Results The study included 133 eligible participants[30 male,103 female;mean age(66.95±4.75)years].The low-balance group 66 participants,and the high-balance group 67 participants.Compared to single-task walking,motor dual-task conditions significantly increased stride time and double support phase duration(all P＜0.05),while decreasing stride length,gait veloc-ity,and cadence(all P＜0.05).Cognitive dual-task conditions prolonged all temporal parameters(stride time,single/double support,swing time;all P＜0.05)and reduced spatial parameters(stride length,velocity,ca-dence;all P＜0.05).Under the dual-task intervention condition,compared to the low-balance group,the high-balance group exhibited an increase in single support time cost(0.35％vs.-1.51％,P=0.019)and swing time cost(0.33％vs.-1.20％,P=0.044),along with a reduction in stride frequency cost(-0.85％vs.0.14％,P=0.042).Conclusions While dual-task conditions generally impair gait parameters in older adults,individu-als with higher balance abilities maintain more stable gait patterns during motor dual-tasks,demonstrating greater resilience to interference.These findings highlight the importance of balance capacity in preserving functional mobility during daily multitasking activities.关键词
平衡能力/步态/双任务成本/老年人Key words
balance ability/gait/dual-task costs/older adult分类
医药卫生引用本文复制引用
王成龙,聂明剑,肖辰辉,吴依妮,王晶晶..静态平衡能力对不同任务介入下老年人步行双任务成本的影响[J].协和医学杂志,2025,16(3):598-605,8.基金项目
国家体育总局体育科学研究所基本科研业务费(基本24-57) Fundamental Research Fund of China Institute of Sport Science(Basic 24-57) （基本24-57）
