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首页> 外文期刊>Topics in stroke rehabilitation >Gait quality and velocity influences activity tracker accuracy in individuals post-stroke
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Gait quality and velocity influences activity tracker accuracy in individuals post-stroke

机译：步态质量和速度影响卒中后个体的活动跟踪器准确性

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Objective: Fitbit Zip (TM) (FBZ) is a low-cost user-friendly device that could help motivate individuals post-stroke to increase their physical activity. However, inaccuracy in step counts from altered gait variables could cause dissatisfaction and reduce compliance. The aim of this study was to determine the influence of gait variables on the concurrent validity of the FBZ. Method: In a cross-sectional study, 19 community-dwelling stroke survivors (mean 66 (SD 8) years) wore a FBZ at the non-paretic hip, and were videoed completing a six minute walk test (6MWT). Steps recorded by the FBZ were compared against the criterion standard of manually counted steps from video-recordings. Spatio-temporal gait parameters were calculated, and gait quality was assessed using the Wisconsin Gait Analysis (WGA) tool. Concurrent validity of FBZ was determined using Kendall's Tau correlation coefficient. Linear regression analysis determined the association between gait parameters, quality, and FBZ accuracy. Results: A very strong correlation was observed between the FBZ steps and manual counting (tau = 0.80, p 16). Conclusions: FBZ is an accurate measure of step activity in independent ambulators with stroke walking at speeds > 0.8m/s, but accuracy can be compromised with lower speed and poor gait quality. Clinicians should consider gait velocity and quality before advising FBZ as a motivational tool to increase physical activity in individuals post-stroke.
机译：目的：Fitbit Zip（TM）（FBZ）是一种低成本的用户友好的设备，可以帮助激励中风后的个人以增加其体力活动。然而，来自改变的步态变量的步骤计数中的不准确可能会导致不满和减少合规性。本研究的目的是确定步态变量对FBZ并发有效性的影响。方法：在一个横断面研究中，19个社区住宅中风幸存者（平均66（SD 8）年）在非瘫痪髋关节中穿过FBZ，并进行了六分钟步行测试（6MWT）。将FBZ记录的步骤与视频录制手动计数步骤的标准标准进行比较。计算时空步态参数，使用威斯康星素步态分析（WGA）工具评估步态质量。使用KENDALL的TAU相关系数确定FBZ的并发有效性。线性回归分析确定了步态参数，质量和FBZ精度之间的关联。结果：在FBZ步骤和手动计数之间观察到非常强烈的相关性（Tau = 0.80，P 16）。结论：FBZ是一种准确测量独立救护车的步进活动，中风走动以速度> 0.8米/秒，但精度可能受到较低的速度和差的步态质量。在建议FBZ作为动机工具之前，临床医生应考虑步态速度和质量，以提高中风中的个体体育活动。

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