This study aimed to determine the relationship between chronotype status, emotion regulation skills and mental toughness of Taekwondo athletes based on the athletes' opinions. The study was conducted with 172 licensed athletes (98 women, 74 men) in clubs affiliated with the Turkish Taekwondo Federation. The “Demographic Information Form”, “Morning-Evening Scale”, “Emotion Regulation Skills Scale” and “Mental Toughness Scale” were applied to the athletes, respectively. Statistical analysis of the data was performed using the SPSS 21.0 package program. Descriptive information of the students participating in the study was given as percentage and frequency. In the statistics of the data obtained from the scales; firstly, the homogeneity and variances of the data were tested, the Mann-Whitney U test was used in pairwise comparisons and the Kruskal-Wallis Test was used in multiple comparisons. In order to determine which groups the difference originated from, Tamhane’s T2 Post Hoc tests and Spearman correlation analysis test were performed for the relationship between personality traits and addiction level. The significance level was accepted as 0.05. According to the results obtained, it was seen that the athletes participating in the study were mostly in the “intermediate type” chronotype. It was determined that there was a very weak positive relationship between the Morningness-Eveningness Scale scores and the Mental Endurance and Emotion Regulation Skills Scale scores. In addition, it was determined that there was a positive, moderately significant relationship between the mental endurance scale and the emotion regulation skills scale scores.

Keywords: Emotion, chronotype, athlete, taekwondo, mental endurance