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Objectives:  The aim of this study was to examine the effect of time of day on short-term repetitive maximal performance and psychological variables in elite judo athletes.   Methods:  Fourteen Tunisian elite male judokas (age: 21 ± 1 years, height:172 ± 7 cm, body-mass: 70.0 ± 8.1 kg) performed a repeated shuttle sprint and jump ability (RSSJA) test (6 m × 2 m × 12.5 m every 25-s incorporating one countermovement jump (CMJ) between sprints) in the morning (7:00 a.m.) and afternoon (5:00 p.m.). Psychological variables (Profile of mood states (POMS-f) and Hooper questionnaires) were assessed before and ratings of perceived exertion (RPE) immediately after the RSSJA.   Results:  Sprint times ( p  > 0.05) of the six repetition, fatigue index of sprints ( p  > 0.05) as well as mean ( p  > 0.05) jump height and fatigue index ( p  > 0.05) of CMJ did not differ between morning and afternoon. No differences were observed between the two times-of-day for anxiety, anger, confusion, depression, fatigue, interpersonal relationship, sleep, and muscle soreness ( p  > 0.05). Jump height in CMJ 3 and 4 ( p  < 0.05) and RPE ( p  < 0.05) and vigor ( p  < 0.01) scores were higher in the afternoon compared to the morning. Stress was higher in the morning compared to the afternoon ( p  < 0.01).   Conclusion:  In contrast to previous research, repeated sprint running performance and mood states of the tested elite athletes showed no-strong dependency of time-of-day of testing. A possible explanation can be the habituation of the judo athletes to work out early in the morning.

Diurnal Variation of Short-Term Repetitive Maximal Performance and Psychological Variables in Elite Judo Athletes