Gait analysis during treadmill and overground locomotion in children and adults
ABSTRACT Gait analysis on the treadmill and in the overground condition is used both in scientific approaches for investigating the neuronal organisation and ontogenetic development of locomotion and in a variety of clinical applications. We investigated the differences between overground and treadmill locomotion (at identical gait velocity) in 12 adults and 14 children (6-7 years old). During treadmill locomotion the step frequency increased by 7% in adults and 10% in children compared to overground walking, whereas the stride length and the stance phase of the walking cycle decreased. The swing phase, however, increased significantly by 5% in adults and remained unchanged in children. Balance-related gait parameters such as the step width and foot rotation angles increased during treadmill locomotion. The reduction of the step length was found to be stable after 10 min of treadmill walking in most subjects. With regard to the shifted phases of the walking cycle and the changed balance related gait parameters in the treadmill condition, we assume a different modulation of the central pattern generator in treadmill walking, due to a changed afferent input. Regarding the pronounced differences between overground and treadmill walking in children, it is discussed whether the systems generating and integrating different modulations of locomotion into a stable movement pattern have reached full capacity in 6-7 year old children.
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ABSTRACT: The measurement of gait parameters normally requires motion tracking systems combined with force plates, which limits the measurement to laboratory settings. In some recent studies, the possibility of using the portable, low cost, and marker-less Microsoft Kinect™ sensor to measure gait parameters on over-ground walking has been examined. The current study further examined the accuracy level of the Kinect sensor for assessment of various gait parameters during treadmill walking under different walking speeds. Twenty healthy participants walked on the treadmill and their full body kinematics data were measured by a Kinect sensor and a motion tracking system, concurrently. Spatiotemporal gait parameters and knee and hip joint angles were extracted from the two devices and were compared. The results showed that the accuracy levels when using the Kinect sensor varied across the gait parameters. Average heel strike frame errors were 0.18 and 0.30 frames for the right and left foot, respectively, while average toe off frame errors were -2.25 and -2.61 frames, respectively, across all participants and all walking speeds. The temporal gait parameters based purely on heel strike have less error than the temporal gait parameters based on toe off. The Kinect sensor can follow the trend of the joint trajectories for the knee and hip joints, though there was substantial error in magnitudes. The walking speed was also found to significantly affect the identified timing of toe off. The results of the study suggest that the Kinect sensor may be used as an alternative device to measure some gait parameters for treadmill walking, depending on the desired accuracy level. Copyright © 2015 The Authors. Published by Elsevier B.V. All rights reserved.Gait & posture 05/2015; 34. DOI:10.1016/j.gaitpost.2015.05.002 · 2.30 Impact Factor
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ABSTRACT: This study was performed in order to detect biased gait being occurred due to vestibular abnormality by using a data of acceleration being generated at foot during gait. Characteristics of acceleration being generated during gait was observed by comparing movement analysis data that was collected in a process of performing biased gait and general gait through induction of galvanic vestibular stimulation with acceleration data and biased direction and degree could be inferred through cumulative value of acceleration data by integrating it. As a result, it could be inferred that detecting gait bias after analyzing gait trajectory by using acceleration of left, right direction would be a feasible method. A significance of this study could be found in that a new possibility of utilizing acceleration was presented in an analysis of gait utilizing acceleration data. It is expected that the result of this study would be utilized for detecting abnormal gait that may be taken place by malfunction or damage of sensory receptor such as vestibular organ.05/2013; 694-697:1192-1196. DOI:10.4028/www.scientific.net/AMR.694-697.1192
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ABSTRACT: Objective: To investigate the effects ofwhole body vibration (WBV) training on gait function in personswithmild multiple sclerosis (MS). Design: A randomized controlled trial. Subjects: 18 patients with MS were assigned randomly to WBV (intervention group) or to placeboWBV. Methods: Both groups performed a 3-week training period under static conditions on a vibration platform. In the placebo group, the vibration platform was covered and therefore vibrations could not operate. Gait function (gait velocity, stride length, double support phase, single-step variability left and right) was assessed at baseline, after 3-weeks of WBV intervention or sham WBV, 4-weeks after baseline, and 5-weeks after baseline using a mobile plantar food pressure system and the “Timed Up and Go” test under four different gait conditions (comfortable overground gait, comfortable gait on treadmill, −20% comfortable gait velocity on treadmill and +20% comfortable gait velocity on treadmill). Results: None of the outcome measures of gait function showed statistically significant alterations following 3-weeks of intervention/placebo WBV. Conclusion: The applied protocol of WBV does not show a meaningful improvement of gait function in mildly affected MS patients.Journal of the Neurological Sciences 09/2014; 347(347):119-123. DOI:10.1016/j.jns.2014.09.030 · 2.26 Impact Factor