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Article Effect of Freezing Phenomenon on Gait Parameters and Pedobarographic Pressure Distribution in Patients with Parkinson's Disease(Springer-Verlag Italia Srl, 2025) Korkusuz, Suleyman; Korkusuz, Busra Seckinogullari; Demircan, Emine Nur; Ozcan, Aysenur; Cakmakli, Gul Yalcin; Balkan, Ayla Fil; Elibol, BulentBackground This study aimed to examine the gait parameters of individuals with Parkinson's Disease with and without freezing of gait (FoG) on the treadmill, where freezing difficulty decreases. Methods Our study included three groups of demographically similar individuals: 15 patients with Parkinson's disease without freezing of gait, 14 patients with Parkinson's disease with freezing of gait, and 14 healthy controls. Spatiotemporal parameters of gait and static-dynamic pedobarographic pressure distribution analysis were performed using a computerized gait evaluation system (on a treadmill). Results The step length, gait speed and gait phase duration of the freezing of gait group were lower than the other groups (p < 0.05). While pedobarographic pressure distribution during static stance was similar in all groups (p > 0.05), pedobarographic pressure distribution during gait was different between groups (p < 0.05). Conclusion In patients with freezing of gait, gait speed was lower, step length and single support phase were shorter, and double support phase was longer. While the amount of load on the backfoot was lower in both Parkinson's groups, the amount of load on the forefoot was lower only in patients with freezing of gait. Even if freezing of gait did not occur, it was observed that the gait characteristics of Parkinson's disease with freezing of gait were different from those of Parkinson's disease without freezing of gait.Article Knee Hyperextension in Chronic Stroke: Associated Biomechanical and Neuromuscular Factors(Elsevier Sci Ltd, 2025) Korkusuz, Sueleyman; Korkusuz, Busra Seckinogullari; Ozgoren, Nihat; Aritan, Serdar; Ceren, Ali Naim; Topcuoglu, Mehmet Akif; Balkan, Ayla FilBackground: This study aimed to determine the gait phase in which knee hyperextension occurs in stroke patients and to investigate the factors associated with knee hyperextension. Methods: This study included 30 stroke patients aged between 40 and 70 years with maximum knee hyperextension during the stance phase of gait. Muscle strength was evaluated with manual muscle test, and muscle tone was assessed with the Modified Ashworth Scale. Kinematic evaluation of the patients was made using the motion analysis system. Additionally, categorisation was made according to the stance phase of gait, where knee hyperextension was at its highest. Findings: A weak relationship was found between maximum knee hyperextension angle and gastrocnemius spasticity, a moderate relationship between knee flexor muscle strength, and a moderate relationship between ankle dorsiflexor muscle strength. In addition, a weak relationship was found between the maximum knee hyperextension and pelvic retraction angles. According to this clustering, it was observed that 66.67 % of the participants (20 people) showed maximum knee hyperextension in the single support phase. It was observed that the participants who had maximum knee hyperextension, especially after the mid-stance phase, had higher mean gastrocnemius spasticity. It was also observed that participants in Cluster 4, with a greater amount of maximum knee hyperextension, had the worst clinical parameters. Interpretation: Our study observed that the degree of maximum knee hyperextension was related to knee flexor and ankle dorsiflexor muscle strengths, gastrocnemius spasticity and pelvic retraction. As clinical parameters worsened, maximum knee hyperextension was thought to occur late in the stance phase. Clinical Trial code: NCT05679700Article Effects of Sensorimotor-Cognitive Training on Balance and Gait in Patients with Idiopathic Parkinson’s Disease: A Randomized Controlled Trial(Springer London Ltd, 2026) Korkusuz, Suleyman; Elibol, Bulent; Ozcan, Aysenur; Korkusuz, Busra Seckinogullari; Fil, Ayla; Cakmakli, Gul Yalcin; Yigit, OznurBackground Sensory-motor-cognitive integration deficits are common in Parkinson's disease(PD) and significantly limit functional performance, highlighting the growing need for holistic training approaches that target these domains simultaneously. Aims This study aimed to examine the effects of sensory-motor-cognitive integration training on balance and gait in patients with Parkinson's disease (PwPD). Methods A total of 40 PwPD, aged between 45 and 75 years, were included. The intervention group received 24 sessions (3 days per week for 8 weeks) of 60-minute sensory-motor-cognitive integration training. The control group was placed on a waiting list and continued their routine daily activities. All participants were assessed at baseline, at the end of the 8th week, and at the 12th week. Static posturography was used to evaluate balance [Limits of Stability and the Modified Sensory Integration and Balance Clinical Test] and gait (Walk Across test). Additionally, balance was assessed using the Functional Reach Test (FRT), and gait performance was evaluated with the Modified Dynamic Gait Index (mDGI). Results Significant time & times; group interactions were observed for functional balance and gait outcomes. The intervention group showed significant improvements in FRT and mDGI scores over time (p < 0.001), whereas no significant changes were observed in the control group. Static posturography also demonstrated significant time-related changes and group differences for most parameters (p < 0.05), except for movement velocity, directional control, and step length symmetry. Conclusion These findings suggest that individualized, multidomain sensory-motor-cognitive integration training may represent a particularly effective rehabilitation approach for enhancing balance and gait in PwPD.Article Citation - WoS: 1Citation - Scopus: 1Investigation the Effect of Rigid Taping on Knee and Hip Joint Kinematics in Chronic Stroke Patients With Knee Hyperextension Gait(Elsevier Ireland Ltd, 2025) Korkusuz, Suleyman; Fil-Balkan, Ayla; Korkusuz, Busra Seckinogullari; Ozgoren, Nihat; Aritan, Serdar; Ceren, Ali Naim; Topcuoglu, Mehmet AkifBackground: Although stroke patients gain an advantage in gait due to the knee hyperextension that occurs during the stance phase, this situation disrupts the biomechanical structure of the knee and increases the risk of injury to the capsular and ligamentous structures. The aim of this study was to examine the effects of rigid taping on hyperextension control and pelvic kinematics in stroke patients with knee hyperextension during the stance phase of gait. Research question: Does rigid taping have an effect on hyperextension control and pelvic kinematics in stroke patients with knee hyperextension? Methods: Thirty stroke patients aged between 40 and 70 were included in this pre-postintervention study. Kinematic assessment of gait was performed using a motion analysis system (Vicon Ltd, Bilston). Then, the rigid taping was applied to the patients using the hyperextension taping technique, and the kinematic analysis of the gait was repeated with the motion analysis system. Results: It was found that the rigid taping for the knee hyperextension significantly reduced the knee hyperextension (p < 0.05). Additionally, it was observed that the rigid taping significantly reduced the pelvic retraction (p < 0.05). However, no change was observed in the pelvic drop with the rigid taping application. Significance: Our results showed that the rigid taping effectively controlled the knee hyperextension. It was thought that the rigid taping application contributed to reducing knee hyperextension and pelvic retraction because it mechanically gave the knee a flexion moment and provided proprioceptive input.
