Browsing by Author "Souissi, Nizar"
Now showing items 1-14 of 14
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Caffeine use or napping to enhance repeated sprint performance after partial sleep deprivation: Why not both?
( Human Kinetics Publishers Inc. , 2021 , Article)Purpose: To compare the effect of a 20-minute nap opportunity (N20), a moderate dose of caffeine (CAF; 5 mg·kg-1), or a moderate dose of caffeine before N20 (CAF+N) as possible countermeasures to the decreased performance ... -
COVID-19 Lockdowns: A Worldwide Survey of Circadian Rhythms and Sleep Quality in 3911 Athletes from 49 Countries, with Data-Driven Recommendations
( Springer Nature , 2021 , Article)Objective: In a convenience sample of athletes, we conducted a survey of COVID-19-mediated lockdown (termed ‘lockdown’ from this point forward) effects on: (i) circadian rhythms; (ii) sleep; (iii) eating; and (iv) training ... -
Effect of acute melatonin administration on physiological response to prolonged exercise
( Taylor and Francis Ltd. , 2020 , Article)Exogenous melatonin supplementation may enhance endurance performance because of its pre-cooling effect. The present study aimed to evaluate the effect of acute melatonin ingestion on rectal temperature (Tre) response to ... -
The effect of caffeine, nap opportunity and their combination on biomarkers of muscle damage and antioxidant defence during repeated sprint exercise
( Institute of Sport , 2021 , Article)To investigate the effect of 20 min nap opportunity (N20), 5 mg·kg-1 of caffeine (CAF) and their combination (CAF+N20) on the biochemical response (energetic biomarkers, biomarkers of muscle damage and enzymatic antioxidants) ... -
The Effect of Experimental Recuperative and Appetitive Post-lunch Nap Opportunities, With or Without Caffeine, on Mood and Reaction Time in Highly Trained Athletes
( Frontiers Media S.A. , 2021 , Article)Purpose: To investigate the effects of placebo (PLA), 20 min nap opportunity (N20), 5mg·kg−1 of caffeine (CAF), and their combination (CAF+N20) on sleepiness, mood and reaction-time after partial sleep deprivation (PSD; ... -
The effect of post-lunch napping on mood, reaction time, and antioxidant defense during repeated sprint exercice
( Institute of Sport , 2021 , Article)To compare the effects of two nap opportunities (20 and 90 min) to countermeasure the transient naturally occurring increased sleepiness and decreased performances during the post-lunch dip (PLD). Fourteen highly trained ... -
Listening to music during warming-up counteracts the negative effects of ramadan observance on short-term maximal performance
( Public Library of Science , 2015 , Article)Aim: The aim of the present study was to examine whether listening to music during warming-up might influence short-term maximal performance (STMP), cognitive anxiety, self-confidence, and enjoyment during Ramadan, and ... -
Lockdown Duration and Training Intensity Affect Sleep Behavior in an International Sample of 1,454 Elite Athletes
( Frontiers Media S.A. , 2022 , Article)Objective: To investigate the effect of 1) lockdown duration and 2) training intensity on sleep quality and insomnia symptoms in elite athletes. Methods: 1,454 elite athletes (24.1 ± 6.7 years; 42% female; 41% individual ... -
Ramadan Observance Exacerbated the Negative Effects of COVID-19 Lockdown on Sleep and Training Behaviors: A International Survey on 1,681 Muslim Athletes
( Frontiers Media S.A. , 2022 , Article)Objective: Disrupted sleep and training behaviors in athletes have been reported during the COVID-19 pandemic. We aimed at investigating the combined effects of Ramadan observance and COVID-19 related lockdown in Muslim ... -
The relative contributions of ACE genotypes on personality traits in Tunisian athletes
( Edizioni Minerva Medica , 2016 , Article)BACKGROUND: The present study attempted to test whether the ACE genotypes can be associated with particular personality traits that can be potentially used as predictors of athletic performance. Eighty seven track and ield ... -
The effect of diurnal variation on the performance of exhaustive continuous and alternated-intensity cycling exercises
( Public Library of Science , 2020 , Article)The purpose of this study was to explore the effect of time of day (TD) on two types of exercise protocols [continuous (CP) versus alternated (AP)]. Eleven physical education students (mean ± SD: age = 24.4 ± 1.2 years, ... -
The effect of Ramadan fasting on the morning-evening difference in team-handball-related short-term maximal physical performances in elite female team-handball players
( Taylor and Francis Ltd. , 2021 , Article)The purpose of this study was to explore the effect of time of day (TD) on two types of exercise protocols [continuous (CP) versus alternated (AP)]. Eleven physical education students (mean ± SD: age = 24.4 ± 1.2 years, ... -
The impact of intermittent fasting during Ramadan on psychomotor and cognitive skills in adolescent athletes
( Frontiers Media SA , 2024 , Article)Introduction: Intermittent fasting (IF) represents a dietary intervention similar to caloric restriction, characterized by the strategic limitation of food consumption. Among the diverse array of practices for IF, Ramadan ... -
The relative contributions of ACE genotypes on personality traits in Tunisian athletes
( Edizioni Minerva Medica , 2016 , Article Review)BACKGROUND: The present study attempted to test whether the ACE genotypes can be associated with particular personality traits that can be potentially used as predictors of athletic performance. Eighty seven track and field ...
