集成技术2016，Vol.5Issue(6)：52-61,10.
老年人身体平衡能力与坐起-行走地反力的样本熵特性的实证研究
Empirical Study of Sample Entropy Characteristics of Sit-to-Walk Motion and Physical Functions of Elderly Humans
摘要
Abstract
Sit-to-walk (STW) motion is one of the most common action in daily life. Falls frequently occur, when there is impaired ability to perform STW movements. In this study, the relationships between dynamical characteristics of STW motion and physical functions of elderly people were investigated. The experiments were conducted in Malianwa community, one of the highest proportion of the elderly population of Beijing. 128 elderly (51 males and 77 females, above 65 years) participated in this experiment. Participants were classiifed into four groups (normal, mild, moderate and severe group) based on physical function test and were instructed to perform STW motion at comfortable state. The data of ground reaction force (GRF) and moment (GRM) between left and right foot was recorded, and quantiifed by sample entropy. The results showed that there were statistical differences among sample entropies of GRF or GRM between left and right foot. In addition, a subset of variables was significant difference among four groups. Statistical difference was found for the following variables: sample entropies of medial-lateral, anterior-posterior, and superior-inferior GRF of left foot during walking (LFx,P=0.049;LFy,P=0.025;LFz,P=0.036, respectively); sample entropies of anterior-posterior, and superior-inferior GRF of right foot during walking (RFy,P=0.043;RFz,P=0.006, respectively); sample entropies of medial-lateral GRM of right foot during walking (RMx,P=0.041). Therefore, the data of GRF and GRM between left and right foot should be acquired and analyzed separately.关键词
老年人/坐起-行走/地面反作用力/力矩Key words
elderly people/sit-to-walk/ground reaction force/ground reaction moment分类
医药卫生引用本文复制引用
马英楠,李慧奇,梁升云,赵国如,高星..老年人身体平衡能力与坐起-行走地反力的样本熵特性的实证研究[J].集成技术,2016,5(6):52-61,10.基金项目
国家自然科学基金项目(51105359)；北京市市级财政项目(PXM2016_178215_000003_00221360_XMCG) （51105359）
