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gait-analysis
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Total 38 records
Effects of medial thrust gait on lower extremity kinetics in patients with knee osteoarthritis
, Article Ortopedia, traumatologia, rehabilitacja ; Volume 23, Issue 2 , 2021 , Pages 115-120 ; 20844336 (ISSN) ; Esfandiarpour, F ; Zahednejad, S ; Kouhzad Mohammadi, H ; Farahmand, F ; Sharif University of Technology
NLM (Medline)
2021
Abstract
BACKGROUND: Medial thrust (MT) gait is a nonsurgical approach for reducing the knee adduction moment (KAM) in patients with knee osteoarthritis. However, its usefulness is indeterminate due to scarcity of research about changes in lower extremity kinetics and the ground reaction force (GRF) which have been investigated in this study. MATERIALS AND METHODS: Twenty patients (6 males, 14 females, age: 56.2±6.2 years) with medial knee osteo-arthritis participated in this cross-sectional study. A 12-camera motion analysis system and two force plates recorded kinematic and GRF data while participants walked barefoot along a 12m path with 1) their regular gait pattern and 2) MT gait pattern. The...
Quantitative changes in gait parameters after cycling among multiple sclerosis patients with ataxia:a pilot study
, Article Journal of Modern Rehabilitation ; Volume 16, Issue 4 , 2022 , Pages 355-363 ; 2538385X (ISSN) ; Emami Razavi, S. Z ; Naser Moghadasi, A ; Azadvari, M ; Shojaee Fard, M ; Rahimi Dehgolan, S ; Sharif University of Technology
Tehran University of Medical Sciences
2022
Abstract
Introduction: Cerebellar ataxia is a common symptom of multiple sclerosis (MS), particularly in progressive forms, where gait and balance problems are the most debilitating symptoms. Exercise training is a critical component of rehabilitation in managing equilibrium dysfunction, and stationary bicycling is a safe, feasible, and effective method to reduce the symptom. Clinical walking performance tests are typically used to assess gait in these patients. However, gait analysis technologies are more sensitive and accurate at detecting subtle and subclinical changes. The purpose of this study was to determine the changes in gait parameters in MS patients with ataxic gait after using a...
A study on validating KinectV2 in comparison of Vicon system as a motion capture system for using in Health Engineering in industry
, Article Nonlinear Engineering ; Volume 6, Issue 2 , 2017 , Pages 95-99 ; 21928010 (ISSN) ; Bilesan, A ; Arshi, A ; Sharif University of Technology
Walter de Gruyter GmbH
2017
Abstract
The currently available commercial motion capture systems are constrained by space requirement and thus pose difficulties when used in developing kinematic description of human movements within the existing manufacturing and production cells. The Kinect sensor does not share similar limitations but it is not as accurate. The proposition made in this article is to adopt the Kinect sensor in to facilitate implementation of Health Engineering concepts to industrial environments. This article is an evaluation of the Kinect sensor accuracy when providing three dimensional kinematic data. The sensor is thus utilized to assist in modeling and simulation of worker performance within an industrial...
Design and Implementation of a GAIT Analysis System Using Kinect for Clinical Application
, M.Sc. Thesis Sharif University of Technology ; Behzadipour, Saeed (Supervisor)
Abstract
To date various commercial systems were used in the gait analysis area. These systems have some difficulties for clinical use, such as being indwell, making trouble in movement and high prices. The Kinect sensor does not have problems of these systems. If the error of sensor is acceptable, Kinect sensor is a suitable choice for application in clinics. The possibility of utilization of the Kinect sensor as a gait analysis system has been studied in this research. The sensor errors in calculation of gait parameters such as lower limb joints angle, stride time, stride length and spatial coordinates of joints were computed. In previous researches the Kinect sensor error has been calculated for...
Design and Analysis of a Wearable Robot for Rehabilitation of Ankle Joint
, M.Sc. Thesis Sharif University of Technology ; Farahmand, Farzam (Supervisor) ; Abbaspour, Madjid (Co-Advisor) ; Behzadipour, Saeed (Co-Advisor)
Abstract
Worldwide, stroke is the third leading cause of death, after cancer and cardiac diseases. Not only Stroke may lead to death, but its complications are critical, such as: Paralysis, Dysarthria, Cognition Disorders, etc. Improvement from these complications and also preventing from new ones, define the rehabilitation field; in other words, rehabilitation process tries to recover the movement ability of these patients. Today rehabilitation robots are helping these process to be faster and more comfortable, for both patients and physiotherapists. Purpose of this research, is design of a robot for performing rehabilitation process, to lower physiotherapy duration and lower the exhaustion of...
Design and Implementation of a Motion Analysis Algorithm based on Inertia-kinect Sensors for Step Length Estimation
, M.Sc. Thesis Sharif University of Technology ; Salarieh, Hassan (Supervisor) ; Alasty, Aria (Co-Supervisor)
Abstract
Motion capture is a process that movements of living organisms like human or objects are captured and the results are processed for the desired applications. This applications are in rehabilation, sports, film industry and etc. There are many techniques and instruments for motion capture that optical cameras are the most accurate ones. But this cameras are high cost and limited to labs. Some sensors like IMUs and recently, Kinect cameras have been considered by many researchers because these are low cost and easy to use. But problems like bias, accumulated error and occlusion make them to looking for improvments. Fusion algorithms are one of the best methods that help to use from each...
Classification of Children with Cerebral Palsy Using Gait Analysis Data
, M.Sc. Thesis Sharif University of Technology ; Farahmand, Farzam (Supervisor) ; Behzadipour, Saeed ($item.subfieldsMap.e)
Abstract
Cerebral palsy is a disorder and a condition that occurs before, during or after birth. According to reports, in developing countries, out of every 1,000 births, 3.5 cases develop cerebral palsy. One of the consequences of cerebral palsy is unusual walking due to nerve disorders, including severe spasm of the lower muscles of the trunk. Drugs, therapies, and orthopedic surgeries are used to help patients with cerebral palsy. Improper orthopedic surgeries have severe effects on the patient's function. You can partially solve these problems by using the gateway category. The common patterns of cerebral palsy gait help decide the treatment method. In recent years, the use of gait analysis has...
Design, Implementation and Control of A Hexapod Robot Using Reinforcement Learning Approach
, M.Sc. Thesis Sharif University of Technology ; Khayyat, Amir Ali Akbar (Supervisor)
Abstract
Hexapod Robots give us the ability to study walking robots without facing problems such as stability. It has a great deal of exibility in movement even if some legs become malfunctioned or face some diculties. Control of legged robots compared to other kind of locomotions is di- cult and requires fairly heavy on-line computations to be done in real time. Therefore, a machine-learning solution may be more convenient in such prob- lems. One method of machine-learning which is used for legged robots with outstanding potential is Reinforcement Learning (RL). RL is a promising ap- proach for achieving complex robots control in dynamic environments. RL techniques are interesting subjects in...
Designing a Loadcell for a Walker to Measure Upper Extremities’ Forces
, M.Sc. Thesis Sharif University of Technology ; Zohoor, Hassan (Supervisor)
Abstract
In this project, two bidirectional loadcell are designed and fabricated to be installed on a walker. Then upper extremities’ forces and moments have been obtained. Results can be used for rehabilitation purposes in Spinal Cord Injuries and Cerebral Palsy cases. The method used in this project is as follows: First, since the commercial multidirectional loadcells are too expensive, the loadcell (and an appropriate electronic board) are fabricated. Ultimately, a complete gait analysis by means of VICON motion analysis and using inverse dynamic method has been held to measure upper extremities’ forces and moments in the wrist, elbow and shoulder. The results for a person with Spinal Cord Injury...
Classification Cerebral Palsy patients by the Differences in Patterns of Center of Pressure Progression and Ground Reaction Force
, M.Sc. Thesis Sharif University of Technology ; Zohoor, Hassan (Supervisor)
Abstract
Cerebral palsy (CP) is one of the most common diseases that cause by brain injury or abnormalcy and occur while brain is developing before, during or just after birth. people with cerebral palsy face certain problems associated with the control of their muscles, these conditions will make simple activities such as sitting, walking or taking objects very difficult for a person.In the case of gait analysis and its effectiveness, there are many articles and studies. In general, experts have used gait analysis to diagnose and treat problems in cerebral palsy patients. Experts have studied on cerebral Palsy using gait analysis directly and indirectly. In indirect cases, patients are classified...
Studying the Gait kinematics of Cerebral Palsy Patients Using the Uncontrolled Manifold Method
, M.Sc. Thesis Sharif University of Technology ; Farahmand, Farzam (Supervisor)
Abstract
Cerebral Palsy is the most common motor disability in childhood. It’s caused by an injury or impaired development of brain. As result, CP children have disability in motor system. All people with cerebral palsy have problem with movement. The symptoms of CP vary from person to person. Therefore, gait analysis was used to investigate those child’s problems and help therapist to find better therapy. Given that, we analyze stance phase of gait cycle of CP children. Also, we calculate and compare variability between traditional development (TD) children and CPs to find a better understanding of how central nerves system (CNS) work. Kinematic Data during walking were collected from 100 CP and TD...
Human Identity Recognition Through Gait and Body Motions Analysis
, M.Sc. Thesis Sharif University of Technology ; Ghaemmaghami, Shahrokh (Supervisor)
Abstract
Among all biometric approaches, gait analysis is one of the most practical methods for human identity recognition. Gait has a lot of advantages over other biometrics like face recognition, iris recognition, fingerprint, etc. First and foremost, the gait data can be collected from a distance, and there is no need for subject’s cooperation. Another advantage of this biometric method is its cost-effectiveness and the fact that it does not need high-resolution images. But there are significant challenges in detecting and analyzing this feature. One of the most important challenges is decreased recognition accuracy caused by identity-irrelevant factors like camera viewpoint and changes in walking...
Gait analysis of a six-legged walking robot using fuzzy reward reinforcement learning
, Article 13th Iranian Conference on Fuzzy Systems, IFSC 2013 ; August , 2013 , Page(s): 1 - 4 ; ISBN: 9781479912278 ; Khayyat, A. A ; Sharif University of Technology
IEEE Computer Society
2013
Abstract
Free gait becomes necessary in walking robots when they come to walk over discontinuous terrain or face some difficulties in walking. A basic gait generation strategy is presented here using reinforcement learning and fuzzy reward approach. A six-legged (hexapod) robot is implemented using Q-learning algorithm. The learning ability of walking in a hexapod robot is explored considering only the ability of moving its legs and using a fuzzy rewarding system telling whether and how it is moving forward. Results show that the hexapod robot learns to walk using the presented approach properly
Kinematic and dynamic analysis of the gait cycle of above-knee amputees
, Article Scientia Iranica ; Volume 13, Issue 3 , 2006 , Pages 261-271 ; 10263098 (ISSN) ; Rezaeian, T ; Narimani, R ; Hejazi Dinan, P ; Sharif University of Technology
Sharif University of Technology
2006
Abstract
The change of gait pattern and muscular activity following amputation is thought to be responsible for the higher incidence of joint degenerative disorders observed in amputees. Considering the lack of consistent data in the literature, the purpose of the present study was to measure and analyze the spatio-temporal variables, the kinematics and, particularly, the net joint moments of the intact and prosthetic limbs of above knee amputee subjects during walking and to compare the results with those of normals. The gait characteristics of five transfemoral amputees and five normal subjects were measured using videography and a force platform. The human body was modeled as a 2-D sagittal plane...
Design of a Novel Gait Analysis System Using Kinect Sensor for Rehabilitation Applications
, M.Sc. Thesis Sharif University of Technology ; Behzadipour, Saeed (Supervisor)
Abstract
To date various commercial systems were used in the gait analysis area. These systems have some difficulties for clinical use, such as being indwell, making trouble in movement and high prices. The Kinect sensor does not have problems of these systems. If the error of sensor is acceptable, Kinect sensor is a suitable choice for application in clinics. The possibility of utilization of the Kinect sensor as a gait analysis system has been studied in this research. The sensor errors in calculation of gait parameters for lower limb joints angle were computed. In previous researches the Kinect sensor error has been calculated for upper limb joints angle and the subject was standing motionless in...
Studying the Kinematics Compensation Mechanism in the Gait of Individuals with Excessive Anti-version using a Subject-Specific Musculoskeletal Model
, M.Sc. Thesis Sharif University of Technology ; Farahmand, Farzam (Supervisor) ; Narimani, Roya (Supervisor)
Abstract
In cases with excessive anteversion even after adolescence, surgeons have to choose osteotomy surgery to modify this abnormality. This surgery and modifying the anatomical problem does not necessarily lead to modify the patients’ gait cycle abnormalities; the authors’ hypothesis is the probable reason may be the persistence of the implement of the patients’ kinematics compensation mechanism even after the surgery. This mechanism is used to almost correct the gait of those with excessive anteversion. First, by using gait analysis text books, a patient’s gait cycle is analyzed; this analysis is consist of 3DGA with EMG and observational gait. Then, by using OpenSim, the patient’s patterns of...
Feet Motion Pattern Recognition Based on Data from Swiss Ranger Camera and other Dynamical Sensors with Offering an Intelligent Data Bank in Motion Correction and Rehabilitation
, M.Sc. Thesis Sharif University of Technology ; Sayyaadi, Hassan (Supervisor)
Abstract
In this project, we use an off-line motion capture technique for walking pattern recognition and reconstruction, and apply a sensory data acquisition system for extracting knee and ankle joints angular movements. Our approach is a marker-based object tracking technique using only one camera and four markers as data acquisition system, and a neural network method is developed for marker detection. Different walking condition considered including: straight position, inclined position with 〖+5〗^° slope, and 〖-10〗^° slope. Using pattern obtained from above process, the BVH format of the motion is built for 3D reconstruction of the performer’s motion. Since the obtain data describe the motion of...
Design and Fabrication of a Wearable Plantar Pressure Measuring System Using Force Sensing Resistor (FSR)
, M.Sc. Thesis Sharif University of Technology ; Farahmand, Farzam (Supervisor) ; Narimani, Roya (Supervisor)
Abstract
The recent project can be considered as a subset of Telerehabilitation, in the field of Telerehabilitation can be defined as the need for long-term data recording in order to determine each individual's movement pattern and compare it to the individual's best model or best practice. With this perspective, it can be said that the recent project, in more detail, remotely targets the use of foot plantar pressure to determine locomotor parameters. With this description, the FSR or force sensitive resistor sensor was selected for a number of reasons, including low cost, low weight and low thickness, and the data acquisition circuit was used to convert the sensors' analog signal to digital output,...
A novel hardware implementation for joint heart rate, respiration rate, and gait analysis applied to body area networks
, Article Proceedings - IEEE International Symposium on Circuits and Systems ; 2013 , Pages 1889-1892 ; 02714310 (ISSN) ; 9781467357609 (ISBN) ; Zamani, A. R ; Hallajian, M ; Ehsani, S. P ; Moghaddam, H. A ; Parsafar, A ; Shabany, M ; Sharif University of Technology
2013
Abstract
Continuous and remote monitoring of vital health-related and physical activity signs of a patient is one of the most important technology-oriented applications to monitor the health-care of ill individuals. In this paper, an innovative framework for a wireless Body Area Network (BAN) system, based on the IEEE 802.15.6 standard, with three types of sensors is proposed and implemented. These include Electrocardiogram (ECG), Force Sensitive Resistor (FSR) and Gyroscope. The proposed design is a novel implementation of an embedded system for the real-time processing and analyzing of the ECG signal, gait phases, and detection of the respiration rate from the ECG signal, by means of small...
Quantitative evaluation of parameters affecting the accuracy of Microsoft Kinect in GAIT analysis
, Article 2016 23rd Iranian Conference on Biomedical Engineering and 2016 1st International Iranian Conference on Biomedical Engineering, ICBME 2016, 23 November 2016 through 25 November 2016 ; 2017 , Pages 306-311 ; 9781509034529 (ISBN) ; Behzadipour, S ; Sharif University of Technology
Abstract
To date various commercial systems have been used in the GAIT analysis. These systems have some difficulties for clinical use, such as interfering with normal movement and high prices. The possibility of utilization of Kinect as a sensor for GAIT analysis has been studied in this research. The accuracy of Kinect in calculation of GAIT parameters such as lower limb joint angles, stride time, and stride length were computed during normal walking. The effects of the sensor's position and direction relative to the walkway were also investigated. The Kinect sensor was installed at different positions toward the motion path. In each position the data was recorded by both Kinect and a commercial...