范文祥，倪朝民，刘孟，陈进，穆景颂，刘郑，刘丽玲，祁冬晴.年龄对正常人步行时足底压力中心轨迹的影响[J].中华物理医学与康复杂志,2018,40(3):174-178
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| 年龄对正常人步行时足底压力中心轨迹的影响 |
| The effect of age on the center of plantar pressure |
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| DOI： |
| 中文关键词: 足底压力中心 支撑相 地面反作用力 步态 |
| 英文关键词: Plantar pressure Stance phase Ground reaction force Gait |
| 基金项目:安徽省科技厅年度重点科研项目（11070403064） |
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| 中文摘要: |
| 目的 研究年龄对正常人步行时足底压力中心（COP）轨迹的影响。 方法 选取受试对象（正常人）50例，其中包括青年组25例和老年组25例，采用AL-600型步态与平衡功能训练评估系统对2组受试者进行步态测试，步态监测指标包括足底压力中心总轨迹长(COPD)、各支撑相亚期［首次触地期（LR）、单腿支撑期（SPS）、足蹬离期（PS）］COP在左右方向的平均偏移(COPD-X)及前后方向的平均偏移(COPD-Y)，比较2组研究对象步态相关参数间的差异。 结果 青年组和老年组的COPD值分别为（27.88±3.09）cm和（41.03±4.93）cm，老年组COPD较青年组大，差异有统计学意义（P<0.05）。与组内LR亚期同指标比较，2组对象SPS亚期COPD-X和COPD-Y值均较小（P<0.05）。与组内SPS亚期同指标比较，2组对象PS亚期COPD-X和COPD-Y值均较大（P<0.05）。2组对象SPS亚期同指标与组内LR亚期同指标比较，差异无统计学意义（P>0.05）。与青年组同亚期同指标比较，老年组对象LR亚期的COPD-X值、PS亚期的COPD-X和COPD-Y值均增加，差异有统计学意义（P<0.05）。2组对象LR亚期的COPD-Y值、SPS亚期的COPD-X和COPD-Y值比较，差异无统计学意义（P>0.05）。 结论 老年人COPD、COPD-X及COPD-Y较青年人大，跌倒风险增加；步态周期内支撑相各亚期步态参数不同，LR和PS期变异更能显示出步态的稳定性差异。 |
| 英文摘要: |
| Objective To study the effect of age on the trajectory of the center of plantar pressure. Methods Twenty-five healthy young people constituted a youth group, while another 25 elderly counterparts formed an aged group. Descriptors of everyone′s gait were collected using an AL-600 gait and balance training and evaluation apparatus. The length of the total trajectory of the center of plantar pressure (COPD) was recorded along with the average left and right deviation of the center of plantar pressure (COPD-X) and its average anterior-posterior deviation (COPD-Y) in the heel strike (LR), single plantar stance (SPS) and push-off (PS) phases of striding. Results The average COPD of the aged group was significantly longer than that of the youths. For both groups, the average COPD-X and COPD-Y deviations in SPS were significantly less than those in the LR and PS phases, with no significant difference between them. Compared with the youth group, the average COPD-X in the LR and PS phases and the average COPD-Y in the PS were significantly greater among the aged, but there was no significant difference between the two groups in the average COPD-X in SPS or in the average COPD-Y in the LR and SPS phases. Conclusions The average COPD, COPD-X and COPD-Y increase with age, indicating the higher risk of falling. The changes in each sub-phase of gait are different, but those in the LR and PS phases more reliably reflect stability. |
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