Method: In the study, a frequency analysis(Frequencies) to determine the general characteristics of the study participants and a correlation analysis(Correlation analysis) to determine the influence relationship between the variables of the measurement tool using SPSS 26.0 were conducted with the data collected through the questionnaire. In order to achieve the purpose of this study, a questionnaire was conducted on 312 youth breaking athletes who have participated in the national breaking competition and analyzed the collected data. Purpose: The study was conducted for the purpose of analyzing the effects of self-management on sports competition anxiety for youth breaking athletes who belong to the national Taekwondo demonstration team and have participated in the defeat contest. These results suggest that the 2D:4D ratio is not a major parameter in predicting exercise potential in the nonathlete young adult, and more research is needed that focuses on other factors that can affect exercise potential in the population that is similarly affected by prenatal sex hormones. However, the 2D:4D ratio was not correlat-ed with the speed and power performance in males and females. In females, there was a significant negative correlation between the length of the fourth digit and 100-meter sprint record(P <. In males, sig-nificant positive correlations were observed between the handball throwing distances and the body weight(P <. There was no significant sex difference in Dr-l. 001), while male digit ratios in both hands were significantly lower than females(P <. As the main findings of this study, the lengths of the 2D and 4D of males were significantly longer than those of females(P <. Statistical significance was set at P < 0.05. The association between physical and anthropometric characteristics and the speed and power-related performance in each sex(male: speed, power, female: speed only) was determined by the Pearson correlation coefficient. Independent t-test was performed to analyze differences between males and females about all variables of physical(height, weight, BMI) and anthropometric(lengths of 2D, 4D, and 2D:4D ratio of both hands, and Dr-l) characteristics. Speed and power performance were assessed by measuring 100-meter sprint record and handball throwing distance, respectively. The difference of the digit ratio between the right and left hands(Dr-l) was also calculated. The lengths of the second and fourth fingers of the right and left hands were measured, and the 2D:4D ratios were calculated. Body weight and height were measured, and body mass index(BMI) was calculated. A total of 108 healthy recreationally active university students(73 male and 35 fe-male, aged 18-20 years) were participated in this study. In this study, it was examined the relationship between the 2D:4D ratio and two important exercise-related fitness components(speed and power) in non-athlete young adults. Low 2D:4D has been known to correlate with morphological, physiological, psychological, and high levels of athletic performance and physical fitness. The relative length of the second and fourth fingers(2D:4D ratio) is a putative biomarker for prenatal testosterone.

2d 4d ratio study pdf