title: Does one night of partial sleep deprivation affect the evening performance during intermittent exercise in Taekwondo players?
abstract: Athletes and coaches believe that adequate sleep is essential for peak performance. There is ample scientific evidence which support the conclusion that sleep loss seems to stress many physiological functions in humans. The aim of this study was to determine the effect of one night's sleep deprivation on intermittent exercise performance in the evening of the following day. Ten male Taekwondo players performed the Yo-Yo intermittent recovery test (YYIRT) in three sleep conditions (reference sleep night [RN], partial sleep deprivation at the beginning of night [PSDBN], partial sleep deprivation at the end of night [PSDEN]) in a counterbalanced order, allowing a recovery period ≥36 hr in between them. Heart rate peak (HRpeak), plasma lactate concentrations (Lac) and rating of perceived exertion (RPE) were measured during the test. A significant effect of sleep restriction was observed on the total distance covered in YYIRT (P<0.0005) and Lac (P<0.01) in comparison with the RN. In addition, performance more decreased after PSDEN (P<0.0005) than PSDBN (P<0.05). Also, Lac decreased significantly only after PS-DEN (P<0.05) compared with RN. However, there were no significant changes in HRpeak and RPE after the two types of partial sleep deprivation compared to RN. The present study indicates that short-term sleep restriction affect the intermittent performance, as well as the Lac levels of the Taekwondo players in the evening of the following day, without alteration of HRpeak and RPE.
authors.affiliation: Research Laboratory "Sport Performance Optimization", National Center of Medicine and Sciences in Sport (CNMSS), Tunis, Tunisia; Faculty of Science, Carthage University, Bizerte, Tunisia.
authors.forename: Mohamed Arbi
authors.initials: MA
authors.lastname: Mejri
authors.affiliation: Research Laboratory "Sport Performance Optimization", National Center of Medicine and Sciences in Sport (CNMSS), Tunis, Tunisia; High Institute of Sport and Physical Education, Ksar-Saïd, Manouba University, Tunis, Tunisia.
authors.forename: Narimen
authors.initials: N
authors.lastname: Yousfi
authors.affiliation: Research Laboratory "Sport Performance Optimization", National Center of Medicine and Sciences in Sport (CNMSS), Tunis, Tunisia; Faculty of Science, Carthage University, Bizerte, Tunisia.
authors.forename: Thouraya
authors.initials: T
authors.lastname: Mhenni
authors.affiliation: Research Laboratory "Sport Performance Optimization", National Center of Medicine and Sciences in Sport (CNMSS), Tunis, Tunisia; High Institute of Sport and Physical Education, Ksar-Saïd, Manouba University, Tunis, Tunisia.
authors.forename: Amel
authors.initials: A
authors.lastname: Tayech
authors.affiliation: Université Paris Ouest Nanterre La Défense, CeRSM (EA 2931), UFR STAPS, Nanterre, France.
authors.forename: Omar
authors.initials: O
authors.lastname: Hammouda
authors.affiliation: Université Paris Ouest Nanterre La Défense, CeRSM (EA 2931), UFR STAPS, Nanterre, France.
authors.forename: Tarak
authors.initials: T
authors.lastname: Driss
authors.affiliation: Research Laboratory "Sport Performance Optimization", National Center of Medicine and Sciences in Sport (CNMSS), Tunis, Tunisia.
authors.forename: Anis
authors.initials: A
authors.lastname: Chaouachi
authors.affiliation: Research Laboratory "Sport Performance Optimization", National Center of Medicine and Sciences in Sport (CNMSS), Tunis, Tunisia; National Observatory of Sport, Tunis, Tunisia.
authors.forename: Nizar
authors.initials: N
authors.lastname: Souissi
keywords: Endurance intensive effort; Evening performance; Intermittent exercise; Sleep loss; Taekwondo; Yo-Yo test