مرکز منطقه ای اطلاع رسانی علوم و فناوری Journal of Sports Physiology and Athletic Conditioning 2783-3038 3 7 2023 1 2 The Effect of Tapering Period with and without Creatine Supplementation on Hormonal Responses of male football Players The Effect of Tapering Period with and without Creatine Supplementation on Hormonal Responses of male football Players 23 35 10.52547/jspac.40182.3.7.23 en Ebrahim Fallah دانشگاه آزاد اسلامی Pegah Hooshangi azad eslami Mohammad Jahangiri tarbaiat modares university 2022 8 30 <p>Background: The aim of this study was to examine the effects of a tapering period with creatine supplementation on hormonal responses of men football players. Materials and Methods: The study sample included 18 male soccer players of the first division league (mean age: 18.77 ± 1.26 years, height: 174.5± 5.77 cm, and weight: 64.07± 6.99 kg) that were in the specific conditioning period who were randomly divided into two equal groups: Taper alone (n=9) and Taper with creatine supplementation (n=9). The levels of blood hormonal parameters including testosterone, cortisol and testosterone to cortisol ratio (T/C) were measured before and after the tapering period (10 days). Paired t-test and independent T-test was used to examine the differences within and between groups, respectively. Results: The results showed that the cortisol levels in the post-test compared to the pre-test decreased significantly in both groups (p≤0.05) ; While, there was no significant difference in testosterone and T/C (p≥0.05). Also, no significant difference was observed in the levels of testosterone, cortisol and T/C between the two groups. Conclusion: The taper period can reduce the cortisol levels of male soccer players, but creatine consumption has no significant effect on the levels of cortisol, testosterone and T/C ratio in the taper period.</p>

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