Person: GÖRGÜLÜ, RECEP
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GÖRGÜLÜ
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RECEP
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Publication Non-Invasive assessment of short and ultra-short heart rate variability during different physical and physiological tests(Univ Zagreb, Fac Kinesiology, 2021-06-01) Alparslan, Tuncay; Arabacı, Ramiz; Görgülü, Recep; ARABACI, RAMİZ; GÖRGÜLÜ, RECEP; Spor Bilimleri Fakültesi; 0000-0001-8403-5742; 0000-0003-2590-4893; ABI-4831-2020; N-8905-2015The main aim of the present study was to determine the short- and ultra-short-term heart rate variability (HRV) during different physical and physiological tests and to compare HRV to different performance levels. The latter aim was to compare participants' short- and ultra-short-term heart rate variability before-, during-, and post-tests. Our hypothesis was that there would be a significant difference between test performance and HRV parameters, and the high performing group would have significantly higher HRV parameters than the low performing group. Fifty-three healthy men (Mage=26.9 +/- 4 years, Mheight=177.9 +/- 5.7 cm; Mweight=77.8 +/- 8.7 kg) were recruited in the current study. We completed the data collection procedure for each participant in four consecutive days. On day-1, anthropometric measurements were conducted and then participants performed isokinetic tests. On day-2, participants performed anaerobic tests; on day-3 equilibrium tests, and on day-4 aerobic capacity tests. The HRV records of all participants were obtained before, during and after all these tests. Based on the participants' performance, they were classified into two groups: participants in G1 had lower performance and those in G2 higher performance. A two-way repeated measures ANOVA yielded significant differences in HRV values obtained in the four different tests. There was a significant difference between fitness test performance groups in the variation of short- and ultra-short-term HRV parameters.Publication Ironic or overcompensation effects of motor behaviour: An examination of a tennis serving task under pressure(Mdpi, 2019-02-01) Görgülü, Recep; GÖRGÜLÜ, RECEP; Spor Bilimleri Fakültesi; 0000-0003-2590-4893; N-8905-2015With specific regard to the hypothesized effects of anxiety on performance in motor behaviour, the rival predictions emanating from the Wegner's "ironic processes theory" and the "implicit overcompensation hypothesis" are largely indiscriminate. Specifically, Wegner's theory predicts that self-instructions not to perform in a certain manner would lead to the very behaviour the individual seeks to avoid under pressure. On the other hand, the implicit overcompensation hypothesis predicts that avoidant instructions would produce the opposite outcome to that intended by the performer under pressure. The present novel study directly compared these predictions using a tennis serving task under manipulated instructions. The sample comprised 32 (20 men, 12 women; M-age = 20.81, SD = 2.20) experienced tennis players who performed a tennis serving task. Participants' levels of cognitive anxiety, somatic anxiety and self-confidence were measured by using Mental Readiness Form-3. A 2 (anxiety: low, high) x 3 (serving zone: target zone, non-target ironic error zone, non-target non-ironic error zone) repeated measures of ANOVA revealed a significant anxiety x serving zone interaction F(2, 62) = 32.27, p < 0.001 which provides specific support for the Wegner's ironic processes of mental control theory rather than implicit overcompensation hypothesis. More specifically, Bonferroni-corrected follow-up paired samples t-tests revealed that when instructed not to serve in a specific direction, anxious performers did so a significantly greater number of times (t(31) = -5.15, p < 0.001). The present research demonstrates that ironic performance errors are a meaningful and robust potential concern for performers who are required to perform under pressure.Publication The moderating role of narcissism on the reciprocal relationship between social loafing and endurance performance(Edizioni Luigi Pozzi, 2022-03-01) GÖRGÜLÜ, RECEP; Gökcek, Eslem; Eyler, Burak; Spor Bilimleri Fakültesi; 0000-0003-2590-4893; JXY-5331-2024; N-8905-2015We aim to investigate the effect of narcissism as a personality factor on endurance performance task. We measured participants' narcissism with self report measures of the Narcissistic Personality Inventory-16 and their perception of effort via the Ratings of Perceived Exertion. We then obtained participants' psychophysiological measures such as heart rate, heart rate variability and also body mass indexes. The final sample comprised 66 individuals (Mage=18.48; SD=1.50, n=27 women, n= 39 men). All participants twice performed a multistage 20-meter shuttle run test in the same-sex teams of three: once when identifiability was low (team condition); and once when identifiability was high (individual condition). Our results revealed that narcissists' performance significantly decreased from individual to team conditions, whereas others displayed no such performance differences. Our results support the hypotheses that narcissists performed better when there was a chance for glory and socially loafed when no such opportunity was available. Results of the present study provide a sound basis foundation for future studies (i.e., endurance sports) on which to explore narcissism as individual differences in the competitive environment.Publication An adaptation study of measurement properties for the characteristics of resilience in sports team inventory(Mdpi, 2018-09-01) Şenel, Ender; Adiloğulları, İlhan; Yıldız, Mevlüt; GÖRGÜLÜ, RECEP; Spor Bilimleri Fakültesi; 0000-0003-2590-4893; N-8905-2015This multi-study paper reports the translation process and the validity and reliability analysis of the Characteristics of Resilience in Sports Teams Inventory (CREST) for the use of Turkish population. In three related studies, 414 team sports athletes from Turkey were sampled. We adopted Beaton et al.'s (2000) methodology for the translation of self-report measures for cross-cultural adaption studies. The first study provided content validity for an initial item set as the preliminary study. The second study explored the factor analysis of the CREST structure. The third study explored re-testing of the explored structure in a different set of participants and criterion-related validity provided. The analysis of Study 1 revealed that the items were understood by the participants and ready for application for the general Turkish population. The exploratory factor analysis in the Study 2 revealed that the CREST had two sub-dimensions as it was in the original inventory. The Cronbach's alpha values for the dimensions of demonstrating resilience characteristics and vulnerabilities shown under pressure were 0.94 and 0.90, respectively. The Kaiser-Meyer-Olkin value was 0.94. The confirmatory factor analysis in the third study showed that the structure of the inventory was confirmed in another sports context. Accordingly, the CREST is a valid and reliable tool for use by Turkish athletes and to measure team resilience that is one of the critical determinants of team performance. Further understanding of team resilience as a process can be gain by using the CREST, especially in future process-oriented research for team sports.Publication The moderating role of narcissism between social loafing and intermittent running performance in soccer players(Human Kinetics Publ Inc, 2020-08-01) Görgülü, Recep; GÖRGÜLÜ, RECEP; 0000-0003-2590-4893; N-8905-2015