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    Craving for exercise due to the disruption of daily routine by an earthquake
    (Frontiers Media Sa, 2025) Ilbak, Ismail; Yasuntimur, Ahmet; Stojanovic, Stefan; Duz, Serkan; Rydzik, Lukasz; Cepicka, Ladislav
    Objectives The research aimed to examine exercise cravings that arise from the disruption of daily routine resulting from the earthquake and the consequent mandatory absence from exercising at fitness centers.Study design This study utilized the phenomenological design through qualitative research methods.Methods The research sample comprises six individuals aged between 22 and 29 years. They were selected using the criterion sampling method. Data was collected through semi-structured interviews, and thematic analysis was used to analyze the data.Results Two different types of cravings were identified. The first type is related to exercise addiction, while the second type is related to anxiety-induced cravings.Conclusions Exercise craving manifests in two ways. The first type originates from exercise addiction, emerging when an individual with exercise addiction experiences a lack of exercise. With a more clinical dimension, the second type arises from the inability to engage in training for uncontrollable reasons.
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    Examining the effects of post-activation performance enhancement on boxers' visual reaction time
    (Stowarzyszenie Idokan Polska-Idokan Poland Assoc, 2024) Ilbak, Ismail; Stojanovic, Stefan; Rydzik, Lukasz; Ambrozy, Tadeusz; Wasacz, Wojciech; Kasicki, Krzysztof; Ilbak, Yunus emre
    Background. There is strong evidence suggesting that Post-Activation Performance Enhancement (PAPE) can acutely enhance various aspects of sports performance, such as strength, endurance, speed, and agility. However, there is a gap in research regarding the effects of PAPE on reaction time performance. Therefore, the aim of this study was to investigate the effects of PAPE on the visual reaction time performances of amateur boxers. Material and Methods. A cross-sectional study was conducted with 17 amateur boxers. Anthropometric measurements were taken, and participants performed a 1-RM Bench Press performance test preceded by 5 minutes of low-intensity running. The PAPE pro- tocol was then administered 72 hours later after another 5 minutes of low-intensity running to avoid fatigue. Visual reaction time was measured immediately before the PAPE protocol and six times at 3-minute intervals afterward. Data were analyzed using IBM Statistics (SPSS, ver. 26.0, Armonk, NY, USA) software. Results. The study found that although there was a difference in the mean visual reaction time performance of participants before and after the PAPE protocol, this difference was not statistically significant (p > 0.05). Therefore, it can be concluded that PAPE does not have an enhancing effect on the visual reaction time performance of boxers. Conclusions. In conclusion, this study suggests that PAPE does not significantly affect visual reaction time performance in amateur boxers. Further research may be warranted to explore other factors that may influence reaction time in this population.
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    The Impact of K-1 Kickboxing Tournament Fights on Growth Hormone, IGF-1, and Insulin Levels: Preliminary Findings from a Pilot Study in Elite Athletes
    (Mdpi, 2025) Rydzik, Lukasz; Ilbak, Ismail; Duz, Serkan; Ambrozy, Tadeusz; Palka, Tomasz; Kopanska, Marta; Niewczas, Marta
    Background: Evidence on acute endocrine responses to K-1 kickboxing is limited. This pilot study assessed pre-to-post changes in GH, IGF-1 and insulin after a single K-1 bout and explored relationships with training experience (TE), final heart rate (HRFINAL) and perceived exertion (RPE). Methods: Elite male K-1 athletes (n = 10) completed an interclub, referee-supervised three-round bout (3 x 2 min). Venous blood was sampled pre-fight and +2 min. GH, IGF-1 and insulin were assayed (ELISA). Paired t-tests and Pearson's r quantified changes and associations. Results: GH rose from 1.20 +/- 2.05 to 11.27 +/- 8.82 ng/mL (p = 0.007; d = 1.85), and insulin from 5.95 +/- 1.56 to 12.95 +/- 5.95 mu U/mL (p = 0.002; d = 1.86); IGF-1 showed no change (200.90 +/- 55.89 to 203.00 +/- 54.10 ng/mL; p = 0.497). Delta GH and Delta insulin correlated positively with HRFINAL (rp = 0.89 and 0.88, both p < 0.001) and RPE (rp = 0.70 and 0.68; p = 0.024 and 0.031), and negatively with TE (rp = -0.72 and -0.68; p = 0.019 and 0.031). Conclusions: A single K-1 fight elicited large acute increases in GH and insulin but not IGF-1 at +2 min. HRFINAL and RPE tracked response magnitude, while more experienced athletes showed smaller deltas. Findings are preliminary and limited by a small sample, elite-only cohort, in an interclub setting, with immediate sampling and absence of a control group.