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刘丽玲,倪朝民,岳 童,刘 孟,刘 郑,陈 进,范文祥,穆景颂,王 丽.脑卒中患者步行时足底压力中心不对称性及其与步速的相关性[J].中国康复医学杂志,2017,(4):409~413
脑卒中患者步行时足底压力中心不对称性及其与步速的相关性    点此下载全文
刘丽玲  倪朝民  岳 童  刘 孟  刘 郑  陈 进  范文祥  穆景颂  王 丽
安徽医科大学附属省立医院康复医学科,合肥,230000
基金项目:安徽省科技厅年度重点科研项目(11070403064)
DOI:
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摘要:
      摘要 目的:探讨脑卒中偏瘫患者步行时足底压力中心(COP)时空参数的不对称性及其与步速的相关性。 方法:选取能够独立步行的脑卒中偏瘫患者(偏瘫组)及健康中老年人(正常组)各30例,每组受试者均以自然步速进行步态测试,提取并计算步速、单支撑时间、双支撑时间、单支撑期COP在前后方向的位移(AP-COPDS)及速度(AP-COPVS)、双支撑期COP在前后方向的位移(AP-COPDD)及速度(AP-COPVD),计算COP时空参数的对称性比,组内进行两侧下肢COP时空参数比较,组间进行COP时空参数对称性比比较,并分析偏瘫组各步态参数对称性比与步速的相关程度。 结果:与健侧相比,患侧单支撑时间、AP-COPDS、AP-COPVS减小,AP-COPDD增加,差异均有显著性意义(P<0.05)。与正常组相比,偏瘫组单支撑时间、AP-COPDS、AP-COPVS三者的对称性比均减小,AP-COPDD对称性比增大,差异均有显著性意义(P<0.05)。偏瘫组步速与单支撑时间对称性比呈高度正相关(r=0.76,P<0.05),与AP-COPDS、AP-COPVS两者的对称性比呈中度正相关(r=0.682,r=0.442,P<0.05),与AP-COPVD对称性比存在负相关趋势(r=-0.363,P=0.053)。 结论:脑卒中偏瘫患者步行时COP时空参数呈不对称性模式,且其不对称性与步速存在相关性。
关键词:卒中  足底压力中心  步速  步态不对称性
Center of foot pressure asymmetry and its correlation with walk velocity among hemiplegic stroke survivors    Download Fulltext
Department of Rehabilitation Medicine, the Affiliated Provincial Hospital of Anhui Medical University, Hefei, 230000
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Abstract:
      Abstract Objective: To explore the asymmetry of center of foot pressure and its correlation with walk velocity among hemiplegic stroke survivors. Method: Thirty hemiplegic stroke survivors who could walk at least 10 meters were recruited as experimental group and thirty healthy elderly persons as control group. All participants were asked to walk across a walkway with embedded pressure sensitive mat. Outcome measures include walk velocity and the following parameters of each limb: single support time, double support time, anterior-posterior (AP) COP displacement during single-support phase (AP-COPDS), AP-COP velocity during single-support phase (AP-COPVS), AP-COPD during double-support phase (AP-COPDD), AP-COPV during double-support phase (AP-COPVD). Symmetry ratios of the parameters above were calculated. Student's t test was used to compare the symmetry ratios between two groups. Pearson correlation coefficients were required to determine the correlation between symmetry ratio and walk velocity. Result: Among the experimental group, single support time, AP-COPDS, AP-COPVS decreased and AP-COPDD increased on the affected side were significantly different from the unaffected side(P<0.05). Compared with the control group, symmetry ratio of single support time, AP-COPDS, AP-COPVS decreased and AP-COPDD increased in the experimental group significantly(P<0.05). Walk velocity was highly positively correlated with the symmetry ratios of single support time,(r=0.76,P<0.01), moderately positively correlated with symmetry ratio of AP-COPDS and AP-COPVS(r=0.682,r=0.442,P<0.05), and a trendency of negatively correlated with the symmetry ratio of AP-COPVD(r=-0.363,P=0.053). Conclusion: The parameters of center of foot pressure are asymmetry and correlated with gait velocity among hemiplegic stroke survivors.
Keywords:stroke  center of pressure  velocity  gait asymmetry
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