摘要:Paula Jr EP, Paza DLS, Pierozan GC, Stefanello JMF. Heart Rate Variability and Emotional States in Basketball Players. JEPonline 2016;19(6):111-122. Heart rate variability (HRV) is used for the assessment and understanding of the psychophysiological changes in athletes, particularly since it allows for the monitoring of the sympathetic and parasympathetic activation of the autonomic nervous system (ANS). This system is responsible for helping to meet the demands of training and competition. The purpose of this study is to analyze the relationship between HRV, mood states, precompetitive anxiety, and self-confidence level of basketball players at the beginning of a basketball season. The subjects were 36 athletes from three basketball teams of the category under-15, from the city of Curitiba/PR/Brazil. HRV was measured before a game, using biofeedback (BFB) equipment. The Brunel Mood Scale (BRUMS) was used to evaluate the subjects’ mood states. The Competitive State Anxiety Inventory (CSAI-2R) was used to assess the pre-competitive anxiety of the subjects. The Sport Confidence Inventory (SCI) was used to evaluate the athletes’ self-confidence. The normality of the data was assessed by the Shapiro-Wilk test. Given that the data were not normally distributed, a nonparametric analysis was performed. By quantile regression no correlation was found between HRV or moods states and precompetitive anxiety. Also, the Spearman correlation showed poor correlation between HRV and confidence levels. This is one of the first studies to present the HRV with variable moods states, anxiety, and self-confidence using the BFB CardioEmotion® and SCI inventory with athletes. In addition to presenting new research tools in psychophysiology, the research invites further investigation to assess the integrated psychophysiological processes in athletes.