Rita M Kiss

Rita M Kiss
Budapest University of Technology and Economics · Department of Mechatronics, Optics and Information Engineering

DSc

About

158
Publications
21,962
Reads
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1,635
Citations
Additional affiliations
January 2007 - July 2008
University of Pécs
Position
  • Professor (Associate)
September 1991 - December 2013
Budapest University of Technology and Economics
Position
  • Professor (Associate)

Publications

Publications (158)
Article
The filtering process for marker displacement data in gait analysis has been unchanged for almost 50 years, despite technological advances in measurement equipment. Most researchers use a second-order zero-lag Butterworth low-pass filter with a cutoff frequency of 6 Hz, which was established based on TV camera recordings digitised at 96 × 96 pixels...
Article
Allografts have become increasingly preferred for anterior cruciate ligament replacement purposes. The risk of infections necessitates thorough sterilization procedures, and the allografts usually need to be stored prior to surgery. Classical mechanical tests have been performed with various types of tendons, however, tibialis anterior and peroneus...
Article
Full-text available
Basketball is one of the most popular team sports in the world. A wide variety of athletic skills can be valuable indicators of a talented player. Testing these skills help trainers and scouts to make the best decisions during both youth and adult player selection of different competitive levels and field positions. However, scientific data regardi...
Article
Full-text available
Background It is important to know the biomechanical properties of an allograft. This is because when looking to do a transplant of a tendon, the tendon must have very similar biomechanical properties to the original tendon. To use tendon allografts, it is critical to properly sterilize the tendon before implantation. In past decades, several steri...
Preprint
Full-text available
Background It is important to know the biomechanical properties of an allograft. This is because when looking to do a transplant of a tendon, the tendon must have very similar biomechanical properties to the original tendon. To use tendon allografts, it is critical to properly sterilize the tendon before implantation. In past decades, several steri...
Chapter
In the case of the transplant surgery of ligaments, it is common practice to use tissues from other parts of the body with similar properties. Although they have similarities, there are some distinct properties, some of which may have serious effects on the success of the operation. These properties can be measured and compared to each other so tha...
Article
Full-text available
This study aimed to evaluate the changes in the endurance properties of four types of tendons caused by freezing and gamma irradiation. Four types of grafts were harvested: quadriceps, semitendinosus + gracilis, tibialis anterior, and peroneus longus. These were put into three groups: Group A was the control group, tested without freezing or irradi...
Article
Full-text available
Compression garments have been used in medicine for many years. Because of the external compression the linear velocity of the blood flow increases inducing an improved blood circulation. According to recent researches in the field of compression garments’ efficiency in sport exercises, there are no any conventional consequences. Moreover, during t...
Article
Human hand injuries account for a significant number of accidents of young adults (mostly sports injuries) and elderly people. The most vulnerable part of the hand is the wrist, a construct consisting of numerous bones and ligaments. The hand is a complex structure, the mechanical behavior is hard to describe, and also it is sometimes hard to corre...
Article
A mindennapi és a sportéletben egyaránt fontos a törzsizmok és más testtartásért felelős izmok megerősítése és egyensúlyának biztosítása. A testtartás izmainak tesztelésére jól alkalmazható a plank-teszt, mely a fekvőtámaszhoz hasonló, csak hajlított alkartámaszban kezdődik és ennek a helyzetnek az egy percig történő megtartása. Előnye, hogy könnye...
Article
Purpose: No any research in literature was found to investigate the effect of pes planus on standing balance in school-aged children. Any kind of change in the arches (height, flexibility) may increase the possibility of a change in standing balance. The aim of present study is to determine the influence of pes planus on the standing balance of sch...
Article
Spiking neural networks (SNNs) receive trains of spiking events as inputs. In order to design efficient SNN systems, real-valued signals must be optimally encoded into spike trains so that the task-relevant information is retained. This paper provides a systematic quantitative and qualitative analysis and guidelines for optimal temporal encoding. I...
Article
Full-text available
A typical optical based gait analysis laboratory uses expensive stereophotogrammetric motion capture systems. The study aims to propose and validate an affordable gait analysis method using augmented reality (AR) markers with a single action camera. Image processing software calculates the position and orientation of the AR markers. Anatomical land...
Data
Bland-Altman plots of gait parameters. (PDF)
Data
Anatomical point calibration animation. (GIF)
Data
Gait analysis with AR markers animation. (GIF)
Data
Data manipulation figures. (PDF)
Data
Bland-Altman plots for virtual anatomical points. (PDF)
Data
Gait parameters comparison data. (XLSX)
Data
C# source code snippets for anatomical calibration and anatomical point tracking using homogeneous coordinate transformation. (PDF)
Article
Assessment of balancing abilities require quantification of balancing motion response, typically using a kinematic or dynamic model of the human body. In this proof of concept work, we demonstrate a 4 degrees-of-freedom, two-link double pendulum model of the human body created according to the Denavit-Hartenberg convention and its utility in a sudd...
Article
In the research, a static hiking bench, built after our custom design, with load sensors was used as a boat simulator. The feasibility of the developed instrument and measurement method was tested on a professional Finn dinghy sailor. The body posture in 3D and the exerted forces were recorded during different simulated wind strengths (light, moder...
Article
A key step in gait analysis is the denotation of anatomical landmarks, often called calibration. Before, no standardised framework existed for determining and comparing the accuracy of this procedure. The goal of the present study was to develop suitable standards and utilize these to examine how a set of changes to a calibration protocol affects a...
Article
Dynamic balancing abilities can be assessed with perturbation tests. The present study examined the effectiveness of balancing (damping ratio) and the recovery action (directional ratio) in bipedal and dominant single-leg stance in the young population. Twenty-four healthy young adult participants completed unidirectional lateral perturbations succ...
Article
Full-text available
The oldest and most precise way to determine the curvatures of the spine is two directional X-ray measurement from the sagittal and coronal planes. By using X-ray, patients are exposed to radiation, which limits the repeatability of the measurements even in serious deformities, thus X-ray is not applicable for frequent monitoring. Therefore new alt...
Article
Full-text available
Introduction: Bad posture is a well-known problem in children and adolescents, and it has a negative effect in adulthood. It can be hypothesized that due to bad posture, changes in the body’s position cause changes in standing balance. Objective: The objective of the study is to determine the influence of bad posture on the standing balance of scho...
Article
Full-text available
Background and purpose The most common and gold standard method to diagnose and follow-up on scoliosis treatment is to capture biplanar X-ray images and then use these to determine the sagittal frontal spinal curvature angles by the Cobb method. Reducing exposure to radiation is an important aspect for consideration, especially regarding children....
Article
Full-text available
With the spreading of motion analysis decisions to invest into a new system demand scientific reference applications. The aim of the present systematic review is to reveal the biomechanical scientific applications of OptiTrack motion capture systems and to overview documented usage conditions and purposes. Six major scientific literature databases...
Article
Full-text available
Recent studies have suggested reduced independent and sensitive parameter sets for stabilometry measurements based on correlation and variance analyses. However, the reliability of these recommended parameter sets has not been studied in the literature or not in every stance type used in stabilometry assessments, for example, single leg stances. Th...
Data
Individual measurement data. (XLSX)
Article
Motion capture systems are widely used to measure human kinematics. Nevertheless, users must consider system errors when evaluating their results. Most validation techniques for these systems are based on relative distance and displacement measurements. In contrast, our study aimed to analyse the absolute volume accuracy of optical motion capture s...
Article
The laparoscopic minimally invasive surgical technique is widely employed on a global scale. However, the efficient and ethical teaching of this technique requires equipment for surgical simulation. These educational devices are present on the market in the form of box trainers and virtual reality simulators, or some combination of those. In this a...
Article
Full-text available
Background Static balancing assessment is often complemented with dynamic balancing tasks. Numerous dynamic balancing assessment methods have been developed in recent decades with their corresponding balancing devices and tasks. Objective The aim of this systematic literature review is to identify and categorize existing objective methods of stand...
Data
Tables of all extracted data from articles used in final synthesis. Records are categorized corresponding to the balance device categories presented in the Results section of the paper. (DOCX)
Article
Aims The aim of this study was to examine the effects of gender on the relationship between Functional Movement Screen (FMS) and treadmill-based gait parameters. Methods Twenty elite junior athletes (10 women and 10 men) performed the FMS tests and gait analysis at a fixed speed. Between-gender differences were calculated for the relationship betw...
Poster
Full-text available
The assessment of balancing abilities is an integral part of orthopaedic and physiotherapeutic evaluation. A widely used therapeutic and diagnostic method is to apply a sudden unidirectional perturbation. The goal of this study is to evaluate the effect of the medio-lateral (ML) perturbation directions, i.e. lateral and contra-lateral, on balancing...
Presentation
Bevezetés: Az egyensúlyozó-képesség vizsgálata szerves része az ortopédiai állapotfelmérésnek, elváltozások progressziójának követésében és a beavatkozások utáni felépülés nyomon követésében. A leginkább elterjedt állásstabilitás-vizsgálat (poszturográfia) mellett igény van a nehezebben kivitelezhető mozdulatokra való képesség felmérésére, idős sze...
Conference Paper
The present study aims to determine the effect of professional sailing on the balancing ability compared to a control group using ultrasound-based provocation tests on a moving platform. The balancing capacity after sudden unidirectional perturbation is characterized by following parameters: the damping time (T), the Lehr’s damping ratio (D), the o...
Conference Paper
Gait analysis gets more accessible, accurate, and simple to use as technology advances. The goal of this paper is to explore the accuracy of an advanced optical motion analysis system, where marker clusters mounted on rigid shapes are used to track the movement of body segments. It aims to examine the magnitude and nature of variation of the angula...
Conference Paper
Knee osteoarthritis (OA) is one of the most widespread orthopedic disease that affects the elderly. The present study aims to evaluate the biomechanical effects of bilateral osteoarthritis on elderly patients compared to a control group using stabilometry parameters. The used parameters were center of pressure (CoP) 95% confidence ellipse area, CoP...
Article
Full-text available
The use of a free oscillating platform for balance training is widespread. However, there is a lack of variables used when analyzing these measurement results. The aim of this study was to introduce and evaluate a new variable. The directional ratio is the ratio of total length of oscillation travelled in the direction parallel and perpendicular to...
Article
Knee osteoarthritis is one of the most widespread orthopedic diseases among elderly people. Biomechanical effects of this disorder are widely studied. In case of very intense knee osteoarthritis, typical measurements such as gait analysis are no longer possible. On the other hand stance tests can be performed even in these very severe cases. In our...
Article
Full-text available
3D printing, as a rapid prototyping method is become more common nowadays world widely, including medicine too. The purpose of this article is to reveal the potential of using 3D printing in medicine, especially with a specific example of making a human thorax model from the very beginning of imaging diagnose to the physical model. There will be sh...
Article
Introduction: The goals of our study were to evaluate the biomechanical differences between five tendons and the changes in biomechanical properties caused by irradiation. Methods: Achilles, quadriceps, semitendinosus + gracilis (STG), tibialis anterior (TA) and the peroneus longus (PL) were harvested from 30 donors. Group A contained 50 tendons...
Article
Full-text available
During postural stability evaluation frequency analyses are applied on the motion of the foot center of pressure (CoP). In this study we compared the most widely used frequency type CoP parameters (median frequency, mean power frequency, bandwidth) including some newly defined parameters (frequency range power ratios, spectral power ratio between t...
Conference Paper
Full-text available
Stabilometry is the study of human postural stability. It can be used in clinical diagnosis and sport sciences as well. Expensive force distribution plates and force plates are used to these measurements. This paper validates the Nintendo Wii Balance Board for stabilometry measurements as a cheap alternative to the expensive force distribution plat...
Article
The goal of the study was to find a proper technique to fix tendon grafts into an INSTRON loading machine. From 8 human cadavers, 40 grafts were collected. We removed the bone-patella tendon-bone grafts, the semitendinosus and gracilis tendons, the quadriceps tendon-bone grafts, the Achilles tendons, and the peroneus longus tendons from each lower...
Conference Paper
During the stabilometry foot center of pressure (COP) was measured on force plates or force distribution plates. From the sampled data several widely used parameters (95% confidence ellipse axes, area and angle, standard deviations of COP, path length and COP ranges) and newly defined parameters 95% confidence ellipse axis ratio, anteroposterior-me...
Conference Paper
The aim of the research was to design powder type self-compacting concrete containing high amount of limestone quarry waste as aggregate and fines. The light colour aggregate mixed with white cement resulted in esthetical surfaces of exposed concrete for architectural purposes. Large amount waste originated from the limestone mining process require...
Conference Paper
The oldest and most accurate way of determining the shape of the spine is to make X-rays from two different angles, which can be performed once a year even in serious diseases, due to its high radiation exposure. However, in case of a conservative treatment of spinal disorders, continuous monitoring is necessary, thus different in-vivo methods are...
Article
Introduction and objective: Total knee arthroplasty (TKA) affects 1-3% of the entire population. The effectiveness of surgery and rehabilitation are of great significance. The goal of this study was to determine how different surgical methods (i.e., conventional and minimally invasive) influence balancing ability in response to sudden unidirectiona...
Article
Full-text available
In children's posture examinations the question often arises whether an X-ray examination is necessary or appropriate. On screening and in other cases when X-ray is contraindicated, alternative-non-invasive-examinations are available. To measure the shapes of the children's spines beside the Spinal Mouse also the Zebris ultrasound-based spine measu...
Conference Paper
Full-text available
The gait parameters, the variability of gait, the balancing ability are influenced by unilateral knee osteoarthritis. The aim of this study is to analyze balancing ability after sudden perturbation characterized Lehr's damping ratio measured by provocation test stance on both and on single limb at patient with bilateral knee osteoarthritis. 20 cont...
Article
Full-text available
The purpose of this study was to work out an objective and sensitive method for the early postoperative period following total knee arthroplasty (TKA) in which analysis of the gait parameters is possible and also to investigate the influence of different surgical approaches for TKA on the gait during stepping in the first three months of the postop...
Article
Full-text available
The Silences of the Archives, the Reknown of the Story. The Martin Guerre affair has been told many times since Jean de Coras and Guillaume Lesueur published their stories in 1561. It is in many ways a perfect intrigue with uncanny resemblance, persuasive deception and a surprizing end when the two Martin stood face to face, memory to memory, befor...
Article
INTRODUCTION, OBJECTIVE: Gait analysis has provided important information about the variability of gait for patients prior to and after total hip arthroplasty (THA). The objective of this research was to clarify how the method of exposure in total hip arthroplasty affects the variability of gait. MATERIALS AND METHOD: Gait analysis was performed at...
Conference Paper
Full-text available
In the development of new strategies for different spine fixation methods, new methods must be tested biomechanically under in vitro conditions before clinical trials can be performed. The effect of different conservation mode on the mechanical properties of vertebrae is an important question. The aim of our research was to determine the effects of...
Article
Total knee arthroplasty significantly influenced gait parameters and the variability of gait. The aim of this research was to analyze the effect of total knee arthroplasty (TKA) on balancing ability after sudden perturbation in the early postoperative period. Balancing ability after sudden perturbation was modeled by a provocation test and characte...
Article
Total hip arthroplasty affects 3–5% of the elderly population. Therefore, the effectiveness of surgery and the ensuing rehabilitation is of great significance. This study investigated balancing ability in response to sudden unidirectional perturbation changes during the first 6 months of the postoperative period with respect to different methods of...
Article
Total hip arthroplasty is a surgical procedure that usually results in almost complete pain relief and early improvement in functional capacity. Previous analyses of the gait of total hip arthroplasty patients have ignored the effect of total hip arthroplasty on the motion of other joints in the operated and non-operated limbs and of the pelvis. We...