Kinematic Quantification of Gait Asymmetry in Patients with Elastic Ankle Wrap Based on Cyclograms

Kutílek, Patrik; Hejda, Jan; Svoboda, Zdeněk

doi:10.1007/978-3-319-00846-2_29

Cited by 10 publications

(19 citation statements)

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“…The cyclogram represents a set of states, and thus we can use the linear regression to determine the value of orientation (i.e. inclination) of an angle-angle cyclogram [18,20]. The polynomial equation of the major axis regression (i.e.…”

Section: Cyclograms and Prediction Of Joint Anglesmentioning

confidence: 99%

“…anatomical the symmetry measures are intuitively understandable. The cyclograms are closed trajectories generated by simultaneously plotting two joint variables [5,6,18]. In order to quantify the symmetry during walking, a synchronized bilateral cyclogram was used in the study, representing the same joint and two sides of the body, i.e.…”

Section: Introductionmentioning

confidence: 99%

“…The parameters used to evaluate the symmetry are the area within the synchronized bilateral cyclogram, and its orientation [17]. For absolutely symmetrical gait, the area within the curve equals zero and the orientation of the curve is forty five degrees [18].…”

Section: Introductionmentioning

confidence: 99%

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Analysis and prediction of upper extremity movements by cyclograms

2014

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AbstractQuantification of upper extremity movement is a common objective in both research and clinical practice. Currently, methods based on angle-angle diagrams, also called cyclograms, seem to be promising. Nevertheless, compared to the study of lower limbs, the concept of angle-angle diagrams has not been systematically used to study upper limb movements during walking. The paper describes two examples of new methods based on angle-angle diagrams for application in rehabilitation and assistive robotics. The cyclograms represent information about the relationship between the angles and their changes over time. We used cyclograms as patterns for learning artificial neural networks and predicting the movement of upper-limb. Together with artificial intelligence, cyclograms offer wide scope of application in prosthesis control systems. Using bilateral cyclogram, the information about the relationship between the right and left arm joint angles is used to evaluate the symmetry of movements. The method based on the orientation of the bilateral cyclogram can be used as an additional method for determining the symmetry of movements of the upper limbs or exo-prosthesis.

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Section: Cyclograms and Prediction Of Joint Anglesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis and prediction of upper extremity movements by cyclograms

2014

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“…After the measurements, the area of convex hulls of cyclograms and the symmetry indexes were calculated. We assume that the decrease of the area of the convex hull indicates the improvement in symmetry of bipedal walking and the as well as the decrease of the symmetry index indicates the improvement in symmetry of bipedal walking, [33].…”

Section: Gait Evaluation Methodsmentioning

confidence: 99%

Kinematic Quantification of Gait Asymmetry Based on Characteristics of Angle-Angle Diagrams

Kutílek

Vítečková

Svoboda

et al. 2014

APH

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“…Method for evaluating the symmetry is based on cyclograms because the method allows to analyze symmetry of entire cycles of gait, [8,9]. For evaluation of the symmetry of the movement are used the so-called bilateral cyclograms, [10,11]. In the past the bilateral cyclograms were used only for evaluation angular movements, i.e.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of movement of patients with Parkinson's disease using wearable MoCap system and bilateral cyclograms

Vítečková

Kutílek

Krupička

et al. 2017

2017 International Conference on Applied Electronics (AE)

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The article focuses on a method of quantifying movement of patients with Parkinson's disease (PD) using wearable motion capture (MoCap) system and bilateral cyclograms. The method uses cyclogram characteristics such as the slope, second moment of area and the area of the cyclogram to compare movements of left and right side of body. For symmetric movement, cyclogram should lie on a symmetry line passing through the origin inclined at an angle 45º. To study the body movement, measurement was performed using accelerometers (Xsens Technologies B.V.). Four accelerometers were placed on subject's arms and legs to measure accelerations in the anterior-posterior, medial-lateral and inferior-superior directions. Subjects (patients and healthy subjects) accomplished an extended Timed Up & Go Test (TUG). The data from the accelerometers were preprocessed, and then the bilateral cyclograms of two synchronized accelerations were created and evaluated. Using the cyclograms we confirmed the hypothesis that patients with PD have asymmetrical movements of the limbs. Omitting medication 24 hours before the measurement in patients with early stage PD had little effect on the synkinesias of gait. Findings suggest the possibility of the designed application of wearable MoCap system and bilateral cyclograms for use in drug therapy by evaluating postural stability via measuring accelerations. Thus, method using accelerometers and bilateral cyclograms is newly proposed for patients with PD.

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Kinematic Quantification of Gait Asymmetry in Patients with Elastic Ankle Wrap Based on Cyclograms

Cited by 10 publications

References 0 publications

Analysis and prediction of upper extremity movements by cyclograms

Analysis and prediction of upper extremity movements by cyclograms

Kinematic Quantification of Gait Asymmetry Based on Characteristics of Angle-Angle Diagrams

Evaluation of movement of patients with Parkinson's disease using wearable MoCap system and bilateral cyclograms

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