158372561X     

51372561X                        

---

Diurnal variation of short-term repetitive maximal performance and psychological variables in elite judo athletes / Hamdi Chtourou, Florian Azad Engel, Hassen Fakhfakh, Hazem Fakhfakh, Omar Hammouda, Achraf Ammar, Khaled Trabelsi, Nizar Souissi and Billy Sperlich

Chtourou, Hamdi [Verfasserin/Verfasser]

Engel, Florian [Verfasserin/Verfasser]

Frontiers in physiology. - Lausanne : Frontiers Research Foundation, 2007-. - 9(2018) Artikel-Nummer 1499, 7 Seiten

Englisch

Gesehen am 14.11.2018

Elektronische Ressource: Zugang beim Produzenten (Lizenzangabe: Kostenfrei zugänglich ohne Registrierung)

Elektronische Ressource: Zugang beim Produzenten (Lizenzangabe: Kostenfrei zugänglich ohne Registrierung)

Digital Object Identifier (DOI): 10.3389/fphys.2018.01499

Circadian Rhythm ; Fatigue ; mood ; Repeated exercise ; repeated sprint running

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 (6×2×12.5 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.