Gökhan Özkoçak

Dr. Gökhan Özkoçak

orcid

Research Focus & Metrics

Academic Career Length

4Years (2023-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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18 December 2025 in Sensors
Verified
Journal Article
Open access
PDF file
ESEda Salgut
Eda Salgut
GÖGökhan Özkoçak
Gökhan Özkoçak
AYArzu Dinç Yavaş
Arzu Dinç Yavaş
Background/Objectives: Hemiplegic shoulder pain (HSP) is a frequent post-stroke complication affecting 30–65% of survivors, contributing to motor dysfunction and reduced quality of life. Balance impairment is another major concern that increases fall risk. This study aimed to examine the associations between HSP, shoulder range-of-motion (ROM) limitations and balance performance using both clinical and sensor-based evaluations. Methods: In this cross-sectional study, 108 stroke survivors (54 with HSP, 54 without) were assessed. Pain intensity was evaluated using the Visual Analog Scale (VAS), balance with the Berg Balance Scale (BBS), and shoulder mobility and postural sway with the validated Euleria Lab IMU-based system integrated with a force platform. Between-group differences were analyzed using the Mann–Whitney U test, and correlations between pain, ROM, balance, and fall-risk indices were determined via Spearman coefficients. Results: Participants with HSP had significantly lower BBS scores (20.96 ± 8.71) than those without HSP (34.58 ± 11.71; p < 0.001). VAS activity scores were negatively correlated with BBS (r = −0.196, p = 0.043) and positively correlated with postural sway and fall-risk parameters, particularly under eyes-closed conditions. Shoulder ROM limitations were linked to poorer balance, and both static and dynamic fall-risk indices were strongly correlated with pain severity (r = 0.676 and r = 0.657; p < 0.001). Conclusions: HSP was associated with impaired balance and elevated fall risk in stroke survivors. The combination of clinical scales and wearable sensor-based measurements provides a comprehensive understanding of postural control deficits. These findings emphasize the need for rehabilitation strategies targeting pain reduction, shoulder mobility, and balance to support functional recovery.

7 May 2026 in Sensors
Verified
Journal Article
Open access
PDF file
GÖGökhan Özkoçak
Gökhan Özkoçak
ESEcem Sorucu
Ecem Sorucu
Rocco Salvatore Salvatore CalabròRocco Salvatore Salvatore Calabrò
Rocco Salvatore Salvatore Calabrò
Gait dysfunction is a common and disabling consequence of stroke, frequently associated with impaired lower-limb torque generation and reduced balance. Robot-assisted gait training (RAGT) has emerged as a promising intervention; however, its phase-specific biomechanical effects remain incompletely characterized. This pilot mechanistic study investigated the effects of Walkbot-assisted gait training on phase-specific lower-limb torque and clinical outcomes in individuals with unilateral hemiplegia. Fifteen patients with hemiplegia underwent Walkbot-assisted gait training. Joint torque values were normalized to body mass (Nm/kg). Phase-specific torque was analyzed during the swing and stance phases for the affected and unaffected limbs. Pre–post differences were evaluated using the Wilcoxon signed-rank test. Functional balance and motor impairment were assessed using the Berg Balance Scale (BBS) and the Fugl–Meyer Assessment—Lower Extremity (FMA-LE). Significant torque increases were observed in both gait phases. Median swing-phase torque increased from 0.261 to 0.361 Nm/kg in the affected limb and from 0.254 to 0.334 Nm/kg in the unaffected limb (p ≤ 0.017). Stance-phase torque increased from 0.197 to 0.454 Nm/kg in the affected limb and from 0.158 to 0.471 Nm/kg in the unaffected limb. Clinical outcomes improved significantly, with median BBS scores increasing from 22.0 to 34.0 and FMA-LE scores from 14.0 to 24.0 (p = 0.001). Walkbot-assisted gait training was associated with significant phase-specific torque gains, accompanied by improvements in balance and lower-limb motor recovery.

1 January 2025 in European Archives of Medical Research
Verified
Journal Article
Open access
PDF file
GÖGökhan Özkoçak
Gökhan Özkoçak
Objective: To identify symptom keywords the public most strongly associates with fibromyalgia and myofascial pain syndrome (MPS) in Türkiye, and translate these patterns into practical, symptom-first prompts for clinicians. Materials and Methods: Monthly Google Trends CSVs (Türkiye, Health category) for July 2015–July 2025 were analyzed in two panels: (1) Fibromyalgia with numbness/tingling, fatigue, insomnia, and depression; (2) MPS with muscle pain, trigger point, joint pain, and kyphosis. Within-CSV terms were compared on levels; between panels, we used correlation/shape. We computed Pearson and Spearman correlations over the full horizon, ±6-month cross-correlations, and 12-month rolling correlations. Results: In the fibromyalgia panel, numbness/tingling showed the strongest positive, synchronous association (Pearson r=0.78; Spearman=0.79; best lag=0 months). Fatigue provided a leading signal (best lag: −6 months; r≈0.33) despite modest same-month correlation (r≈0.13). Insomnia and depression had negligible synchronous associations (r≈0 to −0.05). In the MPS panel, muscle pain had the highest average level but showed moderate negative long-horizon correlation with the disease label (r≈−0.48), similar to trigger point/kulunç (r≈−0.46) and joint pain (r≈−0.45); kyphosis was weakly positive (r≈+0.17). Cross-disease shape correlation (fibromyalgia vs. MPS) was moderately negative (r≈−0.31). Conclusion: A symptom-first communication strategy is suggested: for fibromyalgia, lead with paresthesia (numbness/tingling) and probe fatigue with a 6-month time-course; for MPS, open with muscle pain and trigger-point language before disease labels.

22 October 2026 in WORK: A Journal of Prevention, Assessment & Rehabilitation
Verified
Journal Article
Closed access
SESedef Ersoy
Sedef Ersoy
FKFatma Nur Kesİktaş
Fatma Nur Kesİktaş
BABüşra Şi̇rİn Ahisha
Büşra Şi̇rİn Ahisha
CCCansın Medİn Ceylan
Cansın Medİn Ceylan
DBDerya Buğdayci
Derya Buğdayci
NPNurdan Paker
Nurdan Paker
Background: Nail technicians face significant risks of musculoskeletal disorders due to ergonomic challenges. Nail technicians’ working conditions and health risks can be evaluated to develop strategies that enhance their well-being. Objective: This study assesses the working conditions, occupational symptoms, and potential risk factors for musculoskeletal disorders among nail technicians. Methods: This cross-sectional study involved 35 female nail technicians. Data were collected through interviews, pain assessments, occupational details, the Nordic Musculoskeletal Questionnaire, and the Quick Exposure Check (QEC) for ergonomic risks. Results: A significant proportion of technicians reported respiratory issues (37.1%), skin problems (14.2%), and musculoskeletal pain, particularly in the neck (51%), upper back (57%), and lower back (31%). QEC levels showed that back static positions and neck and wrist/hand exposures were in the “very high risk” category, while shoulder/arm exposures were classified as “high risk”. Neck and static back QEC scores were significantly correlated with weekly working hours and years of experience (r = 0.828, p < 0.001), and reported pain was strongly linked to QEC risk scores for these areas (r = 0.944, p < 0.001). Conclusions: The findings regarding nail technicians’ working conditions and health risks underscore the necessity for ergonomic training and workplace modifications to mitigate these risks. Early intervention is essential to prevent chronic work-related disorders and improve technicians’ health and quality of life.

31 July 2024 in Preprints.org
Verified
Preprint
Open access
PDF file
SESedef Ersoy
Sedef Ersoy
FKFatma Nur Kesiktas
Fatma Nur Kesiktas
BABüşra Şirin Ahısha
Büşra Şirin Ahısha
CCCansın Medin Ceylan
Cansın Medin Ceylan
DBDerya nazlı Bugdaycı
Derya nazlı Bugdaycı
NPNURDAN PAKER
NURDAN PAKER
Background/Objectives: Nail technicians frequently have musculoskeletal pain, which impairs their job performance. A high-risk profession linked to back discomfort that causes morbidity is nail technician. QEC is a tool used for observing and assessing risks in a work environment. The goal of this research is to assess the ergonomic risks, pain, and their relationship with posture among manicurists. Methods: The 35 nail technicians filled the assessment form which consists of occupational information, pain, European Community Respiratory Health Survey, Nordic Musculoskeletal Questionnaire and QEC worker part. Physicians assessed nail technicians’ workspace and QEC outcomes. Results: It was stated that they worked an average of 61.92±11.09 hours per week, served an average of 11±5 customers per day, and their condition lasted 53.96±36.51 months. There is a strong significant correlation between discomforts, time spent in occupation (p=0,000) and working hours. Manicure, pedicure, unwanted hair removal, correction of eyebrow were considered for ergonomic risk evaluation. Each occupation accompanied repeated bad postures. Most of them were scored in very high risk categorization for back static positions (more than 29 point). Conclusions: This study may be useful for nail technicians seeking ergonomic improvements in the areas of engineering, administration, behavior, or personal.

1 July 2026 in International Journal of Women's Health
Verified
Journal Article
Open access
PDF file
MBMehtap Kilicoz Bakar
Mehtap Kilicoz Bakar
GÖGökhan Özkoçak
Gökhan Özkoçak
ZAZeliha Candan Algun
Zeliha Candan Algun
Background: Stress urinary incontinence is common in women and can negatively affect quality of life. This study evaluated the effects of pelvic floor muscle training alone and combined with high-intensity focused electromagnetic therapy on pelvic floor muscle function, urinary symptoms, and quality of life. Methods: This randomized controlled trial included 44 women with stress urinary incontinence, randomly assigned to either the high-intensity focused electromagnetic therapy group or the pelvic floor muscle training group (22 per group). Both groups received supervised pelvic floor muscle training three times weekly for 8 weeks. In addition, the high-intensity focused electromagnetic therapy group received twice-weekly treatment for 6 weeks, with 28-minute sessions. The primary outcome measure was pelvic floor muscle activity, assessed using surface electromyography biofeedback. The secondary outcome measures were urinary symptoms and quality of life, evaluated using the Urogenital Distress Inventory-6, the International Consultation on Incontinence Questionnaire-Short Form, and the King’s Health Questionnaire. Appropriate parametric and nonparametric tests were used for data analysis, and statistical significance was set at p< 0.05. Results: No significant between-group differences were found at baseline (p> 0.05). Both groups showed significant post-treatment improvements in pelvic floor muscle function and urinary symptoms. In the high-intensity focused electromagnetic therapy group, significant improvements were observed in electromyography parameters, UDI-6, and ICIQ-SF scores (all p< 0.001). Improvements in the pelvic floor muscle training group were also significant but less pronounced. After treatment, the high-intensity focused electromagnetic therapy group showed significantly better outcomes than the pelvic floor muscle training group in electromyography parameters, UDI-6, ICIQ-SF, and King’s Health Questionnaire total score (all p≤ 0.03). After Holm correction, the HIFEM + PFMT group showed significantly greater improvements than the PFMT group in Work Peak EMG activity, maximum voluntary contraction, and UDI-6 scores, with large effect sizes (g = 1.41, 1.26, and − 1.22, respectively; adjusted p ≤ 0.035). Other outcomes did not remain significant after adjustment for multiple comparisons. Conclusion: Both pelvic floor muscle training alone and in combination with high-intensity focused electromagnetic therapy were effective in women with stress urinary incontinence. However, the combined approach provided greater improvements in several objective and subjective outcomes, suggesting that high-intensity focused electromagnetic therapy may be a useful adjunct to exercise-based conservative treatment. Trial Registration: ClinicalTrials.gov, NCT06450795. Registered June 8, 2024.