Speed and temporal-distance adaptations during treadmill and overground walking following stroke
Speed and temporal-distance adaptations during treadmill and overground walking following stroke
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DOI：
10.1177/1545968305275286
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发表时间：
2005-06-01
影响因子：
4.2
通讯作者：
Lamontagne, A
中科院分区：
文献类型：
--
作者：
Bayat, R;Barbeau, H;Lamontagne, A
目标。比较中风患者在跑步机上和在地面上达到的最大步速，并确定最大步速的时间距离决定因素。方法：研究方法。10名偏瘫步态障碍患者，步行速度在0.24m/S~0.82m/S之间。还对5名年龄匹配的健康对照组进行了测试，以提供两种运动模式之间步态速度转移的比较数据。在经历了一个短暂的习惯在跑步机上行走的过程后，受试者按随机顺序在跑步机上和地面上以舒适的最大速度步行进行测试。主要结果指标。使用6摄像头VICON(TM)运动分析系统获得自己选择的舒适和最大步速以及时间距离因子，并比较以相同速度在跑步机和地面上行走的情况。结果。与跑步机相比，地面行走导致了更高的最大速度(P<；0.001)、更大的步幅(P<；0.001)和更低的节奏(P<；0.001)。舒适步速和最大步长是两种运动模式下最大速度的主要决定因素(P<；0.01)，而最大步速仅在地面运动时与最大速度相关(P<；0.05)。结论。与地面相比，中风受试者在跑步机上走得更慢。他们还使用了一种不同的策略来提高步态速度，主要依靠在跑步机行走时增加步幅。
Objective. To compare the maximum gait speed of stroke subjects attained during treadmill and overground in stroke subjects and to identify the temporal-distance determinants of the maximal gait speed. Methods. Ten individuals with hemiparetic gait deficits and whose walking speeds ranged between 0.24 m/s and 0.82 m/s participated. Five healthy age-matched controls were also tested to provide comparative data for the gait speed transfer between the 2 modes of locomotion. Following a brief habituation process to walking on the treadmill, subjects were tested while walking at comfortable and maximal speeds on the treadmill and overground, in a random order. Main Outcome Measure. Self-selected comfortable and maximum gait speed and temporal distance factors were acquired using a 6-camera Vicon (TM) motion analysis system and compared between treadmill and overground walking at a similar speed. Results. Overground walking resulted in higher maximal speeds (P < 0.001), greaterstride lengths (P < 0.001), and a lower cadence (P < 0.02), as compared to treadmill. The comfortable gait speed and the maximum stride length proved to be strong determinants for the maximal speed on both modes of locomotion (P < 0.01), but the maximum cadence was correlated to maximum speed only for overground locomotion (P < 0.05). Conclusions. Stroke subjects walked slower on the treadmill as compared to overground. They also used a different strategy to increase gait speed, relying mostly on increasing the stride length during treadmill ambulation.