Sürdürülebilir Kalkınma Amaçları

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• MakaleAçık Erişim2026Scopus SJRQ2/r/gumushane/10499
  Multi-joint isokinetic strength profiling as a predictor of vertical jump performance in elite freestyle wrestlers A cross-sectional principal component analysis

  Sever, Ozan; Ceylan, Halil Ibrahim; Dhahbi, Wissem; Yilmaz, Hasan Huseyin; Özdemir, Kubra; Yazici, Ahmet Gokhan; Jalalov, Ferhad; Günay, Ahmet Rahmi; Bayrakdaroglu, Serdar; Stefanica, Valentina

  Wrestling requires coordinated lower-limb strength for explosive techniques. While isokinetic testing isolates joint-specific strength and countermovement jumps assess functional power, comprehensive multi-joint assessments with advanced factor analysis remain unexplored in elite wrestlers. Twenty-one national-level male freestyle wrestlers (22.3 +/- 2.8 years; 76.2 +/- 14.7 kg) completed cross-sectional neuromuscular assessments. Isokinetic concentric strength testing at 60 degrees/s evaluated hip, knee, and ankle joint functions bilaterally using an Isomed 2000 dynamometer. Vertical jump power was assessed through countermovement jumps under bilateral and unilateral conditions using the Optojump system. All strength and power variables were normalized to fat-free mass determined via air displacement plethysmography. Statistical analyses included Pearson correlations with Benjamini-Hochberg correction, stepwise multiple regression, and principal component analysis. Bilateral jump performance correlated strongly with knee extension (R = 0.798, P <.001) and hip extension strength (R = 0.664, P =.001), with combined predictors explaining 68.8% of variance (F-2,F-18 = 19.8, P <.001). Principal component analysis identified a primary extensor factor (hip and knee extension, 52.6% variance) and an auxiliary factor (ankle plantar flexion and hip adduction, 19.0% variance). Unilateral jump models demonstrated lower explanatory power (dominant: 39.8%, non-dominant: 25.7%). Multi-joint isokinetic strength assessment, particularly hip and knee extension capacity, provides a robust prediction of vertical jump performance in elite wrestlers. The identified primary extensor strength factor represents a fundamental neuromuscular capacity underlying explosive lower-limb function, supporting targeted strength development strategies for wrestling-specific performance enhancement.

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  AtıfScopus12·WoS12·OpenAlex11

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• MakaleAçık Erişim2025Scopus SJRQ2/r/gumushane/10232
  Exploring the acute recovery effects of dry cupping therapy and electrical stimulation on anaerobic performance metrics in active individuals: A quasi-experimental crossover study

  Can, Ibrahim; Yerlikaya, Gokhan; Yalçin, Seda; Bayrakdaroglu, Serdar; Kayhan, Recep Fatih; Uluç, Ender Ali; Stefanica, Valentina; Ceylan, Halil Ibrahim

  Background:This quasi-experimental crossover study aimed to examine the acute effects of dry cupping therapy (DCT) and neuromuscular electrical stimulation (NMES) on fatigue and perceived exertion in anaerobic performance among physically active individuals.Methods:Twelve male participants (mean age: 24.1 +/- 2.37 years), all students from the Faculty of Sports Sciences, were recruited to participate voluntarily. Anaerobic performance parameters, including peak power, mean power (MP), and fatigue index (FI), were assessed using a Monark 839E cycling ergometer under 3 distinct conditions: NMES, DCT, and a control condition (no intervention), with each session separated by a 48-hour rest period. Perceived exertion was evaluated immediately following each test session using Borg's rate of perceived exertion (RPE) scale. Both NMES and DCT were administered bilaterally to the hamstring (m. hamstring) and quadriceps femoris (m. quadriceps femoris) muscles for 20 minutes before testing.Results:The results revealed no statistically significant differences in peak power and MP across the conditions. However, significant effects were identified for FI (F(2, 22) = 4.08, P = .031, eta p(2) = 0.27) and RPE (F(2, 22] = 8.88, P = .0015, eta p(2) = 0.45). Post hoc pairwise comparisons indicated that NMES significantly reduced FI compared to the control condition (P = .0311), with a small to medium effect size (Cohen's d = 0.44). In terms of RPE, DCT significantly lowered values compared to both the control (P = .0018) and NMES conditions (P = .0005), demonstrating medium (Cohen's d = 0.74) and small to medium (Cohen's d = 0.37) effect sizes, respectively.Conclusions:While NMES and DCT did not elicit acute improvements in peak or mean anaerobic power, both interventions effectively mitigated fatigue and reduced perceived exertion during maximal anaerobic exercise. These findings suggest that NMES and DCT may serve as valuable recovery modalities for mitigating fatigue in sports characterized by high anaerobic demands. Future research should investigate the chronic effects of these interventions and explore their utility among trained athletes to determine their broader applicability in enhancing athletic performance.

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• MakaleAçık Erişim2025Scopus SJRQ2/r/gumushane/10359
  Recurrent aphthous stomatitis, oxidative stress, and ischemia modified albumin: A cross-sectional study

  Öztekin, Aynure; Öztekin, Coskun; Sahin, Humeyra Nursel; Karadeniz, Tuba Betul; Senel, Engin; Caliskan Atac, Damla; Savci, Unsal; Neselioglu, Salim; Erel, Ozcan

  Recurrent aphthous stomatitis is an inflammatory disease characterized by painful ulcers on the oral mucosa. Oxidative stress is held responsible for the pathogenesis of this disease of unknown etiology. In oxidative stress, the balance between oxidant-antioxidant substances changes in favor of the oxidative side. Ischaemia modified albumin (IMA) is a new type of albumin. It occurs as a result of factors such as ischemic attacks and oxidative stress. The aim of the study was to compare IMA levels in patients with recurrent aphthous stomatitis with healthy volunteers and to investigate whether IMA has a diagnostic value in the disease. This cross-sectional study included 32 patients with recurrent aphthous stomatitis and 34 healthy volunteers of similar age and sex. Albumin and IMA levels were determined by spectrophotometric albumin cobalt binding assay in venous blood samples on the same day. IMA was expressed as absorbance unit. Receiver operating characteristic analysis was used to determine whether IMA values could be a diagnostic marker for prediction of disease. IMA values of the patient group were significantly higher than IMA values of the control group (P < .001). IMA was statistically significant in the prediction of recurrent aphthous stomatitis (P < .001). The discrimination power for IMA was very good (area under the receiver operating characteristic curve 95% CI = 0.952 [0.897-1.000]). Recurrent aphthous stomatitis, in which oxidative stress plays a role in the etiopathogenesis, is closely associated with high IMA levels. IMA levels may have diagnostic value as an indicator of oxidative stress in the disease.

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