Browsing by Author "Chamari, Karim"
Now showing items 1-20 of 22
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Assessment of executive functions in school-aged children: A narrative review
( Frontiers Media S.A. , 2022 , Article Review)Introduction: In the past three decades, there has been increasing interest in assessing children’s Executive Functions (EF). However, studies on the conceptualization and operationalization of this construct are incongruent ... -
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 ... -
Cardiac Parasympathetic Reactivation in Elite Soccer Players During Different Types of Traditional High-Intensity Training Exercise Modes and Specific Tests: Interests and Limits
( Tehran University of Medical Sciences , 2015 , Article)Background: The cardiac parasympathetic reactivation is currently used in soccer with a daily or weekly monitoring. However, previous studies have not investigated how this cardiac parasympathetic reactivation is in elite ... -
The construct validity of session RPE during an intensive camp in young male Karate athletes
( CIC Edizioni Internazionali S.r.l. , 2014 , Article)Background: the aim of this study was to assess the validity of the session rating of perceived exertion (RPE) method and two objective HR-based methods for quantifying karate’s training load (TL) in young Karatekas. ... -
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 ... -
The COVID-19 pandemic: How to maintain a healthy immune system during the lockdown - A multidisciplinary approach with special focus on athletes
( Institute of Sport , 2020 , Article)On January 31, 2020, the World Health Organization (WHO) declared the outbreak of a novel coronavirus responsible for an infection termed COVID-19 as a global public health emergency. To slow the spread of the coronavirus, ... -
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 ... -
Effect of tethered swimming as postactivation potentiation on swimming performance and technical, hemophysiological, and psychophysiological variables in adolescent swimmers
( Human Kinetics Publishers Inc. , 2021 , Article)Objectives: To investigate whether tethered swimming (TS) performed 8 minutes before a 50-m freestyle swimming sprint could be an effective postactivation potentiation method to improve performance in young swimmers. ... -
Heat Adaptation and Nutrition Practices: Athlete and Practitioner Knowledge and Use
( Human Kinetics Publishers Inc. , 2022 , Article)Purpose: To survey elite athletes and practitioners to identify (1) knowledge and application of heat acclimation/acclimatization (HA) interventions, (2) barriers to HA application, and (3) nutritional practices supporting ... -
Home-based exercise can be beneficial for counteracting sedentary behavior and physical inactivity during the COVID-19 pandemic in older adults
( Taylor & Francis , 2020 , Article)The novel pandemic called coronavirus disease 2019 (COVID-19), as a global public health emergency, seems to be having a major impact on physical activity (PA) behaviors. Older adults are at high risk of death from the ... -
Impact of covid‐19 on swimming training: Practical recommendations during home confinement/isolation
( Multidisciplinary Digital Publishing Institute (MDPI) , 2021 , Article)The COVID‐19 pandemic has had severe effects on communities globally, leading to significant restrictions on all aspects of society, including in sports. Several significant decisions were made to postpone or cancel major ... -
The Importance of Monitoring Sleep within Adolescent Athletes: Athletic, Academic, and Health Considerations
( Frontiers Media , 2016 , Article)Opinion piece. -
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 Fasting and Patients with Cancer: State-of-the-Art and Future Prospects
( Frontiers Media , 2016 , Article)Ramadan fasting represents one of the five pillars of the Islam creed. Even though some subjects (among which patients) are exempted from observing this religious duty, they may be eager to share this particular moment of ... -
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 ... -
Repeated sprint ability in young basketball players: one vs. two changes of direction (Part 1)
( Taylor & Francis , 2015 , Article)The present study aimed to compare the changes of direction on repeated sprint ability (RSA) vs. intensive repeated sprint ability (IRSA) protocols in basketball. Eighteen young male basketball players performed on RSA ... -
Resistance training and handball players’ isokinetic, isometric and maximal strength, muscle power and throwing ball velocity: A systematic review and meta-analysis
( MDPI AG , 2020 , Article)Purpose: Handball (Team Handball) is an intermittent and strenuous contact sport, the successful performance of which depends on frequent body contacts, and the ability to make repeated explosive muscular contractions ...
