Experimental design
RPE, taekwondo
This is a double-blind, counterbalanced, crossover study design aiming to investigate the acute effects of CAF supplementation combined with listening to music during warm-up on the subsequent 10 s frequency speed of kick test (FSKT-10s), multiple frequency speed of kick test (FSKT-mult), and taekwondo specific agility test (TSAT) performances, the felt arousal scale (FAS), the physical activity enjoyment scale (PACES), the feeling scale (FS) and the rating of perceived exertion (RPE) in elite male taekwondo athletes. The study was conducted following the Consolidated Standards of Reporting Trials (CONSORT) guidelines for randomized crossover trial [During the first visit, athletes were familiarized with the testing procedure and anthropometrics characteristics measurements were conducted. During the testing sessions, athletes were submitted to six conditions (five experimental conditions and one control) in a randomized counterbalanced order (i.e., the 16 athletes were split into two groups of two and four groups of three). Specifically, in a double-blind fashion, athletes ingested 3 mg