Comparison of three kinematic gait event detection methods during overground and treadmill walking for individuals post stroke

Detecting gait events using ground reaction forces (i.e. kinetic detection) is the gold standard, but it is not always possible. Kinematic methods exist; however, accuracy of these methods in stroke survivors during treadmill and overground walking is unknown. Thus, this study compared the accuracy...

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Bibliographic Details
Published in:Journal of biomechanics 2020-01, Vol.99, p.109481-109481, Article 109481
Main Authors: French, Margaret A., Koller, Corey, Arch, Elisa S.
Format: Article
Language:English
Subjects:
Accuracy
Ankle
Data processing
Error analysis
Fitness equipment
Gait
Gait event detection
Heels
Identification methods
Kinematics
Locomotion
Mathematical analysis
Methods
Overground
Sacrum
Stroke
Survival
Toe
Treadmill
Treadmills
Velocity
Walking
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Summary:Detecting gait events using ground reaction forces (i.e. kinetic detection) is the gold standard, but it is not always possible. Kinematic methods exist; however, accuracy of these methods in stroke survivors during treadmill and overground walking is unknown. Thus, this study compared the accuracy of three kinematic methods during overground and treadmill walking in stroke survivors. Heel strike and toe off were calculated bilaterally using three kinematic methods (horizontal sacral-heel distance, horizontal ankle-heel distance, and horizontal velocity) and a kinetic method for ten stroke survivors. We calculated true and absolute error for each kinematic method relative to the kinetic method to evaluate accuracy. Repeated-measures ANOVAs compared the absolute error between the different methods for each condition. There was a significant effect of method for all conditions except heel strike during treadmill walking. Post hoc tests showed ankle-heel distance detected heel strike with significantly less error than the other methods during overground walking (p 
ISSN:0021-9290
1873-2380
DOI:10.1016/j.jbiomech.2019.109481