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Gait Profile Score in able-bodied and post-stroke individuals adjusted for the effect of gait speed.

Abstract：

BACKGROUND:The Gait Profile Score (GPS) measures the quality of an individual's walking by calculating the difference between the kinematic pattern and the average walking pattern of healthy individuals. RESEARCH QUESTIONS:The purposes of this study were to quantify the effect of speed on the GPS and to determine whether the prediction of gait patterns at a specific speed would make the GPS outcome insensitive to gait speed in the evaluation of post-stroke individuals. METHODS:The GPS was calculated for able-bodied individuals walking at different speeds and for the comparison of post-stroke individuals with able-bodied individuals using the original experimental data (standard GPS) and the predicted gait patterns at a given speed (GPS velocity, GPSv). We employed standard gait analysis for data collection of the subjects. Sixteen participants with a stroke history were recruited for the post-stroke group, and 15 age-matched, able-bodied participants formed the control group. RESULTS:Gait speed significantly affects the GPS and the method to predict the gait patterns at any speed is able to mitigate the effects of gait speed on the GPS. Overall, the gap between the GPS and GPSv values across the post-stroke individuals was small (0.5° on average, range from 0.0° to 1.4°) and not statistically significant. However, there was a significant negative linear relationship in the absolute difference between the GPS and GPSv values for the participants of the post-stroke group with gait speed, indicating that a larger difference between the speeds of the post-stroke participant and the reference dataset resulted in a larger difference between the GPS and GPSv. SIGNIFICANCE:The modified version of the GPS, the GPSv, is effective in reducing the impact of gait speed on GPS; however, the observed difference between the two methods was only around 1° for the slowest individuals in comparison to the reference dataset.

journal_name

Gait Posture

journal_title

Gait & posture

authors

Fukuchi CA,Duarte M

doi

10.1016/j.gaitpost.2019.01.018

subject

Has Abstract

pub_date

2019-03-01 00:00:00

pages

40-45

eissn

0966-6362

issn

1879-2219

pii

S0966-6362(18)31314-6

journal_volume

69

pub_type

杂志文章

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