YYÜ GCRIS Basic veritabanının içerik oluşturulması ve kurulumu Research Ecosystems (https://www.researchecosystems.com) tarafından devam etmektedir. Bu süreçte gördüğünüz verilerde eksikler olabilir.

Browsing by Author "Ozdenk, Cagri"

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • Thumbnail Image
    Article
    Comparatively Evaluating the Effects of Exercising at the Anaerobic Threshold on Oxidative Stress and Serum Levels of Leptin, Nesfatin-1 and Irisin in Sedentary Male and Females
    (Mattioli 1885, 2022) Ugras, Seda; Algul, Sermin; Ozdenk, Cagri
    Study Objectives: Exercise has a great impact in increases of energy metabolism and imbalance of oxidant-antioxidant status. We aimed to analyse the association between exercise-induced oxidative stress and energy regulatory hormones of leptin, nesfatin-1 and irisin in sedentary male and female subjects. Methods:A total of 30 subjects (15 males and 15 females) performed an aerobic exercise approximately 45 min. Blood samples were taken at baseline and the end of the exercise. ELISA method was used to analyse parameters of leptin nesfatin-1, irisin, total oxidant status (TOS) and total antioxidant status (TAS). Result: Exercise caused a significant increase in levels of irisin and TOS but TAS level decreased. In addition, leptin and irisin levels increased significantly in females, but they did not change significantly in males. Conclusion: However, gender differences have a great impact on energy regulatory hormones which needed to be evaluated in further stud-ies. Energy regulatory hormones did not correlate with the change of TAS and TOS levels.
  • Thumbnail Image
    Article
    Variations in Leptin, Nesfatin-1 and Irisin Levels Induced by Aerobic Exercise in Young Trained and Untrained Male Subjects
    (inst Sport, 2017) Algul, Sermin; Ozdenk, Cagri; Ozcelik, Oguz
    The aims of this study were to investigate the impacts of acute aerobic exercise on circulating levels of hormones associated with energy metabolism, namely leptin, nesfatin-1 and irisin, in trained and untrained male subjects and to determine whether the timing of the exercise (i.e. morning or night) amplified these impacts. Thirty trained (19.2 +/- 0.7 years) and 30 untrained (19.5 +/- 0.6 years) male subjects performed two aerobic running exercises (3 days between tests) to 64-76% of the subjects' maximal heart rate for about 30 min. Pre- and post-exercise venous blood samples were taken and analysed for leptin, nesfatin-1 and irisin using enzyme-linked immunosorbent assay (ELISA). Paired samples and independent samples t-tests were used to analyse data. Irisin levels increased in all the subjects (p<0.001). In both groups, nesfatin-1 levels increased significantly after the night-time exercise (p<0.05). Importantly, leptin and nesfatin-1 levels varied among the trained and untrained groups: Both leptin and nesfatin-1 levels increased in 4 (13%) and 12 (40%) subjects, respectively, after the morning exercises, and they increased in 9 (30%) and 10 (33%) subjects, respectively, after the night-time exercise. They decreased in 5 (16%) and 7 (23%) subjects, respectively, after the morning exercise and in 6 (20%) and 3 (10%) subjects, respectively, after the night-time exercise. Exercise may result in increased energy consumption by altering irisin levels. However, due to variations among individuals, increasing leptin and nesfatin-1 levels by reducing food intake may not be applicable.