Alparslan, TuncayArabacı, RamizGörgülü, Recep2024-06-072024-06-072021-06-011331-1441https://doi.org/10.26582/k.53.1.15https://hrcak.srce.hr/clanak/374785https://hdl.handle.net/11452/41878The 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.eninfo:eu-repo/semantics/openAccessWingate anaerobic testRate dynamicsRate recoveryExerciseReliabilityWomenMenResponsesPowerHRVAutonomic nervous systemHeart rate variabilityPhysical and physiological testsScience & technologyLife sciences & biomedicineRehabilitationSport sciencesArticle00072238050001012213053110.26582/k.53.1.151848-638X