Péter Prukner

55791494800

Publications - 11

Effects of walking training with and without a robot and standard care on clinical and mobility outcomes: A randomized clinical trial in acute ischemic stroke patients

Tamás Haidegger Tibor Hortobágyi József Tollár Péter Prukner Istvan Drotar Bence Csutorás Nándor Prontvai Klaudia Széphelyi Blanka Törő Szilvia Kóra

Publication Name: Experimental Gerontology

Publication Date: 2025-10-15

Volume: 210

Issue: Unknown

Page Range: Unknown

Description:

Background: Stroke incidence rises with age. A stroke can severely affect walking ability, requiring therapy. Robot-assisted walking therapy (ROB) has been advocated as one form of walking rehabilitation in stroke patients. However, its comparative efficacy remains controversial and three-group comparisons are scant. We compared the effects of ROB, walking training therapy without a robot (WTT) and standard treatment therapy (STT) on clinical and mobility outcomes in acute ischemic stroke patients. Methods: Individuals (n = 45, 71 % males, age 64.4y ±6.34), who have recently experienced an ischemic stroke, were randomized to ROB, WTT or STT. Clinical and mobility outcomes were assessed before and after each intervention (3 weeks, 5 sessions/week) and after 5 weeks of no-intervention follow-up. Results: Outcomes did not differ between groups at baseline (p > 0.05). Modified Rankin Scale (primary outcome), improved (p < 0.05) after ROB and WTT vs. STT. These improvements were retained relative to baseline (p < 0.05) after follow-up. Barthel index, Berg Balance Scale, 10-m walking speed, the distance while walking with and without the robot for six minutes, and center pressure velocity in standing improved most after ROB (all p < 0.001), exceeding the changes after WTT which in turn were greater than the changes after STT (p ≤ 0.040). Conclusion: Older adults shortly after an ischemic stroke can quickly learn to walk with a soft robot and retain substantial clinical and mobility improvements at follow-up.

Open Access: Yes

DOI: 10.1016/j.exger.2025.112882

Effectiveness of High-Intensity Therapy in Rehabilitation of Parkinson’s Disease Patients

József Tollár Péter Prukner Istvan Drotar Nándor Prontvai Szilvia Kóra Petra Kós György Wersényi

Publication Name: Applied Sciences Switzerland

Publication Date: 2025-06-01

Volume: 15

Issue: 11

Page Range: Unknown

Description:

Parkinson’s disease (PD) is a progressive movement disorder with no cure. In this randomized controlled study, 100 patients with PD were assigned to four intervention groups (Exergame, Cycling, Agility, and Robot) for 14 weeks. This study evaluates the effectiveness of high-intensity therapy in a randomized clinical trial. Exergaming, cycling, agility, and robot therapies improved motor function, postural stability, and cardiovascular health. Heart rate monitoring and Borg Scale ratings confirmed the safety and adaptability of high-intensity training, with patients sustaining moderate-to-high exertion without adverse effects. Significant improvements were observed in gait speed (+0.30–0.50 m/s), Functional Independence Measure (FIM) (+25–30 points), and Berg Balance Scale scores. Integrating high-intensity, functional movement-based therapies into PD rehabilitation may offer superior motor, gait, and cardiovascular benefits compared to conventional methods.

Open Access: Yes

DOI: 10.3390/app15115890

Comparison of Five Rehabilitation Interventions for Acute Ischemic Stroke: A Randomized Trial

Tamás Haidegger Tibor Hortobágyi József Tollár Péter Prukner Tomas Vetrovsky Istvan Drotar Szilvia Kóra Petra Kós Zoltán Vadászi György Wersényi

Publication Name: Journal of Clinical Medicine

Publication Date: 2025-03-01

Volume: 14

Issue: 5

Page Range: Unknown

Description:

Background: Comparative efficacy of rehabilitation interventions in persons with acute ischemic stroke (PwS) is limited. This randomized trial assessed the immediate and lasting effects of five interventions on clinical and mobility outcomes in 75 PwS. Methods: Five days after stroke, 75 PwS were randomized into five groups: physical therapy (CON, standard care, once daily); walking with a soft robotic exoskeleton (ROB, once daily); agility exergaming once (EXE1, once daily) or twice daily (EXE2, twice daily); and combined EXE1+ROB in two daily sessions. Interventions were performed 5 days per week for 3 weeks. Outcomes were assessed at baseline, post-intervention, and after 5 weeks of detraining. Results: Modified Rankin Scale (primary outcome) and Barthel Index showed no changes. EXE1, EXE2, ROB, and EXE1+ROB outperformed standard care (CON) in five secondary outcomes (Berg balance scale, 10m walking speed, 6-min walk test with/without robot, standing balance), with effects sustained after 5 weeks. Dose effects (EXE1 vs. EXE2) were minimal, while EXE1+ROB showed additive effects in 6-min walk tests. Conclusions: These novel comparative data expand evidence-based options for therapists to design individualized rehabilitation plans for PwS. Further confirmation is needed.

Open Access: Yes

DOI: 10.3390/jcm14051648

Inverse Stackelberg Game with Final-Time Observations

Péter Prukner Ziliang Wang Han Zhang Lili Wu

Publication Name: Journal of Shanghai Jiaotong University Science

Publication Date: 2025-01-01

Volume: Unknown

Issue: Unknown

Page Range: Unknown

Description:

In this paper, we extend the framework of inverse optimal control to an inverse Stackelberg game (ISG) problem that involves a hierarchical two-player scenario. More specifically, the aim is to determine the unknown parameters in the leader’s and the follower’s objective functions based on their observed behavior in the final time window. Under a linear-quadratic setup, we first show that the parameter matrices in the objective functions for both the leader and the follower of the ISG are identifiable. Then, we propose a two-step approach to estimate the parameters in objective functions. In particular, the process first identifies the parameter matrix of the follower. Next, we identify the leader’s control gain within the final observation time window. Then we identify the leader’s matrix based on the identified leader’s control gain and the follower’s parameter matrix. Finally, we validate the effectiveness of our methodology through deterministic numerical experiments. (Figure presented.).

Open Access: Yes

DOI: 10.1007/s12204-025-2837-1

Investigation of the Effectiveness of the Robotic ReStore Soft Exoskeleton in the Development of Early Mobilization, Walking, and Coordination of Stroke Patients: A Randomized Clinical Trial

Tamás Haidegger József Tollár Péter Prukner Istvan Drotar Nándor Prontvai Adrienn Bíró Klaudia Széphelyi Szilvia Kóra Mónika Androsics

Publication Name: Robotics

Publication Date: 2024-03-01

Volume: 13

Issue: 3

Page Range: Unknown

Description:

Medical robotics nowadays can prevent, treat, or alleviate numerous severe conditions, including the dire consequences of stroke. Our objective was to determine the effect of employing a robotic soft exoskeleton in therapy on the development of the early mobilization, gait, and coordination in stroke patients. The ReStore™ Soft Exo-Suit, a wearable exosuit developed by a leading company with exoskeleton technology, was utilized. It is a powered, lightweight device intended for use in stroke rehabilitation for people with lower limb disability. We performed a randomized clinical intervention, using a before–after trial design in a university hospital setting. A total of 48 patients with a history of stroke were included, of whom 39 were randomized and 30 completed the study. Interventions: Barthel Index and modified Rankin scale (mRS) patients were randomly assigned to a non-physical intervention control (n = 9 of 39 completed, 30 withdrew before baseline testing), or to a high-intensity agility program (15 sessions, 5 weeks, n = 30 completed). The main focus of assessment was on the Modified Rankin Scale. Additionally, we evaluated secondary factors including daily life functionality, five dimensions of health-related quality of life, the Beck depression inventory, the 6 min walk test (6MWT), the Berg Balance Scale (BBS), and static balance (center of pressure). The Robot-Assisted Gait Therapy (ROB/RAGT) program led to significant improvements across various measures, including a 37% improvement in Barthel Index scores, a 56% increase in 10 m walking speed, and a 68% improvement in 6 min walking distance, as well as notable enhancements in balance and stability. Additionally, the intervention group demonstrated significant gains in all these aspects compared to the control group. In conclusion, the use of robotic therapy can be beneficial in stroke rehabilitation. These devices support the restoration and improvement of movement in various ways and contribute to restoring balance and stability.

Open Access: Yes

DOI: 10.3390/robotics13030044

On Applying Gradient Based Thresholding on the Canny Edge Detection Results to Improve the Effectiveness of Fuzzy Hough Transform for Colonoscopy Polyp Detection Purposes

Péter Prukner Raneem Ismail Szilvia Nagy

Publication Name: Smart Innovation Systems and Technologies

Publication Date: 2023-01-01

Volume: 332 SIST

Issue: Unknown

Page Range: 110-121

Description:

The possibilities of improving the effectiveness of fuzzy Hough transform calculations in the detection of colonoscopy image processing and polyp detection by gradient based preprocessing is studied. For the Hough transforms a black and white image consisting of line segments is necessary, thus most of the times an edge detected image is used as the basis of the transform. Here, the gradient magnitude values corresponding to the Canny edge pixels of the image are used for determining, which are the typical magnitude values for the polyp contours, in order to remove part of the non-contour edges from the image. Three publicly available databases with images and ground truth masks are used for testing, whether a general threshold for the gradients is applicable, but based on the histograms it seems to be not possible to generate a database independent normalized gradient based domain that can be used for sorting out the unnecessary edges.

Open Access: Yes

DOI: 10.1007/978-981-19-7842-5_10

Telerehabilitation After Brain Injuries: Its Efficacy and Role in Reducing Healthcare Burdens

Tamás Haidegger József Tollár Péter Prukner Istvan Drotar Nándor Prontvai Blanka Törő Szilvia Kóra Petra Kós György Wersényi

Publication Name: Acta Polytechnica Hungarica

Publication Date: 2023-01-01

Volume: 20

Issue: 8

Page Range: 305-320

Description:

Rehabilitation following brain injuries, such as stroke and other traumatic injuries, presents significant challenges for both patients and healthcare systems. Traditional in-person rehabilitation often requires regular visits to specialized facilities, which can be difficult for patients in remote areas or those with mobility and financial constraints. Telerehabilitation offers a promising solution by enabling patients to continue essential therapy at home, ensuring continuity of care while reducing the burden on healthcare providers. It can be effectively applied across various patient groups, including children, adults, the elderly, amputees, individuals with traumatic neurological injuries, and those with neurocognitive impairments such as dementia. Our telemedicine platform integrates advanced technologies, i.e., 3D motion analysis and Virtual Reality (VR) to enhance home-based physiotherapy. These tools enable precise monitoring, real-time feedback, and immersive therapy sessions, in order to improve coordination, fine motor skills, hand-eye coordination, and the vestibular system, which is crucial for balance. This platform also performs detailed offline data analysis, allowing healthcare professionals to adjust therapy plans based on individual needs. As the demand for rehabilitation services continues to grow, adopting these technologies will be crucial for sustainable, effective healthcare, ultimately improving patient outcomes and shaping a more efficient and equitable future for healthcare systems.

Open Access: Yes

DOI: 10.12700/APH.20.8.2023.8.16

Virtual Reality in Cerebrovascular Rehabilitation: A Mini Review on Clinical Efficacy and Neurological Impacts

Tamás Haidegger József Tollár Péter Prukner Istvan Drotar Nándor Prontvai Blanka Törő Szilvia Kóra Petra Kós György Wersényi

Publication Name: Acta Polytechnica Hungarica

Publication Date: 2023-01-01

Volume: 20

Issue: 8

Page Range: 321-336

Description:

The application of virtual reality (VR) technology in both upper and lower limb rehabilitation represents a significant advancement in the field of medicine. VR-based therapies provide patients with the opportunity to engage in intensive, repetitive, and targeted exercises that promote neuroplasticity and improve the motor skills necessary for daily life. VR has long been recommended for the rehabilitation of conditions such as in case of ischemic stroke, Parkinson’s disease, and multiple sclerosis, further underscoring its versatility and therapeutic potential. In our study, we evaluated the effectiveness of VR therapy focusing on stroke rehabilitation. The reviewed VR systems provided motion analysis, tracking, feedback reinforcement, and realistic environments to facilitate the restoration of motor functions. Furthermore, we developed a VR-based therapy aimed at both upper and lower limb motor functions, combined with traditional rehabilitation. The application of VR technology not only promotes the improvement of motor functions but also offers economic advantages by reducing the burden on healthcare workers and increasing rehabilitation capacity. Further research is needed to determine the optimal conditions for applying VR therapy in clinical practice.

Open Access: Yes

DOI: 10.12700/APH.20.8.2023.8.17

Applications of periodic structures and metamaterials for antenna design

Miklós Kuczmann Péter Prukner

Publication Name: Acta Technica Jaurinensis

Publication Date: 2022-11-30

Volume: 15

Issue: 4

Page Range: 188-192

Description:

Nowadays, wireless telecommunication is playing an increasing role in almost every field. With the spread of IoT and 5G technologies, all electronic devices will communicate over a network and millions of devices can be connected to each other over such network. Due to this, the number of base stations will also increase significantly. As a result, even more antennas will be installed both indoors and outdoors. It follows that the use of smaller and more compact antennas and simpler and more reliable parameter tuning are of great importance to service providers as well as to equipment manufacturers, both in terms of design and antenna selection. Metamaterials are sub-wavelength structures that act as a homogeneous material to create electromagnetic properties that would not be possible with conventional materials. With the help of today's modern design and manufacturing technologies, it is possible to implement and manufacture such structures. In this article, the theoretical background and application possibilities of periodic structures and materials are presented, followed by the tuning of a split ring resonator and its application on a patch antenna.

Open Access: Yes

DOI: 10.14513/actatechjaur.00669

Application of PETSC and other useful packages in finite element simulation

Miklós Kuczmann Dániel Marcsa Gergely Kovács György Tomozi Péter Prukner Gergely Friedl Tamás Budai Tamás Unger

Publication Name: Pollack Periodica

Publication Date: 2013-08-01

Volume: 8

Issue: 2

Page Range: 141-148

Description:

In the frame of the project TÁMOP 4.2.2.A, at the Széchenyi István University, the goal is to work out a new finite element package for the simulation and optimization of permanent magnet synchronous motors. These motors are then used to drive new electric cars. The aim of the two dimensional package is the fast numerical modeling of these electric devices by the use of free tools presented in the paper. Of course, the software is aimed to use it in the simulation of other devices, and three dimensional problems, as well.

Open Access: Yes

DOI: 10.1556/Pollack.8.2013.2.15

The Relationship Between EMF Exposure and MIMO Systems, and the Exposure Advantages of Lowband Massive MIMO System

Péter Prukner Kornél Merkli Szilvia Nagy

Publication Name: Telecom

Publication Date: 2025-09-01

Volume: 6

Issue: 3

Page Range: Unknown

Description:

With the advancement of mobile communications, technologies based on high-element-count antenna systems—such as massive Multiple Input Multiple Output (massive MIMO)—are playing an increasingly important role in enhancing network capacity. However, they introduce new challenges in the measurement and evaluation of electromagnetic field (EMF) exposure. This study presents a detailed, laboratory-based methodology for assessing EMF exposure in cellular systems using Single Input Single Output (SISO) and MIMO technologies. To address the limitations of traditional exposure assessment techniques—particularly under the conditions introduced by 5G and active antenna systems—a shielded test environment with directional antennas was developed and applied across lowband and midband frequency ranges (700–2100 MHz). Downlink electromagnetic power density was measured under standardized modulation, coding, and bandwidth settings for both SISO and MIMO configurations. The results show that MIMO technology does not lead to a significant increase in EMF exposure compared to SISO, with average differences remaining below 1 dB. Moreover, in lower-frequency bands, massive MIMO systems can ensure the required user capacity at significantly lower transmission power, resulting in more than 15 dB reductions in EMF exposure. These findings confirm the potential of massive MIMO to enhance network performance while reducing the level of electromagnetic exposure.

Open Access: Yes

DOI: 10.3390/telecom6030063