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N

Nizar Souissi

national observatory of sports

52H-index
327Paper Count
1.1WCitation Count
Published Papers 50
Publication Date
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Acute Caffeine Ingestion, Calendar-Based Menstrual-Cycle Window, Time of Day, and Match-Induced Fatigue Independently and Interactively Influence Psychophysiological, Cognitive, and Physical Performance in Elite Female Volleyball Players: A Randomized Double-Blind Placebo-Controlled Crossover Design Study
errLife
IF3.4
err2026-05-30
err0
errOAAI
errMeher Seddik; Wissem Dhahbi; Manel Bessifi; Imen Moussa-Chamari; Halil İbrahim Ceylan; Nagihan Burçak Ceylan; Raul Ioan Muntean; Dražen Čular; Nizar Souissi
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Differential Time-of-Day Effects of Caffeine Capsule and Mouth Rinse on Physical Performance and Volleyball-Specific Skills in Adolescent Male Volleyball Players
errNutrients
IF5
err2026-05-09
err0
errOAAI
errSalma Belhaj Amor; Wissem Dhahbi; Marouen Souaifi; Halil İbrahim Ceylan; Johnny Padulo; Stefano Vando; Nagihan Burçak Ceylan; Raul Ioan Muntean; Nizar Souissi
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Cross-country variability in Mediterranean lifestyle adherence and its psychosocial and behavioural correlates: insights from the MEDIET4ALL project across 10 Mediterranean and neighboring countries
errFrontiers in Nutrition
IF5.1
err2026-04-16
err0
errOAAI
errAA Achraf Ammar †; AS Atef Salem; SZ Slim Zarzissi; TA Tania Abril-Mera; KT Khaled Trabelsi; BB Bassem Bouaziz; MA Mohamed Ali Boujelbane †; MK Mohamed Kerkeni; LM Liwa Masmoudi; JH Juliane Heydenreich; CS Christiana Schallhorn; GM Gabriel Müller; AM Ayse Merve Uyar; HA Hadeel Ali Ghazzawi; AT Adam Tawfiq Amawi; BE Bekir Erhan Orhan; GG Giuseppe Grosso; OA Osama Abdelkarim; TD Tarak Driss; KE Kais El Abed; WM Wassim Moalla; PZ Piotr Zmijewski; FD Frédéric Debeaufort; NB Nasreddine Benbettaieb; CP Clément Poulain; LR Laura Reyes; AG Amparo Gamero; MC Marta Cuenca-Ortolá; AC Antonio Cilla; NF Nicola Francesca; CM Concetta Maria Messina; EV Enrico Viola; BL Björn Lorenzen; SF Stefania Filice; SL Sadjia Lahiani; TK Taha Khaldi; NS Nafaa Souissi; OB Omar Boukhris; EF Evelyn Frias-Toral; HJ Haitham Jahrami; WH Waqar Husain; WM Walid Mahdi; NS Nizar Souissi; HC Hamdi Chtourou; WI Wolfgang I. Schöllhorn
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Progressive Smartphone Restriction Combined with Psychoeducational Guidance and Pre-Sleep Autonomic Regulation Improves Sleep Efficiency and Time-of-Day Cognitive Performance in Physically Active Students with Nomophobia: A Randomized Controlled Trial
errLife
IF3.4
err2026-01-28
err0
errOAAI
errWiem Ben Alaya; Wissem Dhahbi; Mohamed Abdelkader Souissi; Nidhal Jebabli; Halil İbrahim Ceylan; Nagihan Burçak Ceylan; Raul Ioan Muntean; Nizar Souissi
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Differential Time-of-Day Effects of Caffeine Capsule and Mouth Rinse on Cognitive Performance in Adolescent Male Volleyball Athletes: A Randomized Crossover Investigation
errLife 2026, Vol. 16, Page 33
IF3.4
err2025-12-26
err0
errOAAI
errSalma Belhaj Amor; Wissem Dhahbi; Houda Bougrine; Manel Bessifi; Vlad Adrian Geantă; Vasile Emil Ursu; Khaled Trabelsi; Nizar Souissi
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Self selected music during warm up improves anaerobic performance in female handball players across time of day
errScientific Reports
IF3.9
err2025-11-05
err0
errOAAI
errHouda Bougrine; Imed Gandouzi; Ismail Dergaa; Julien Maitre; Abdulwahed Ahmed Alaizari; Osama Aljuhani; Thierry Paillard; Nizar Souissi
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Single-Night Sleep Extension Enhances Morning Physical and Cognitive Performance Across Time of Day in Physically Active University Students: A Randomized Crossover Study
errLife 2025, Vol. 15, Page 1178
IF3.4
err2025-08-23
err0
PREAI
errEya Bouzouraa; Wissem Dhahbi; Aymen Ferchichi; Vlad Adrian Geantă; Mihai Ioan Kunszabo; Hamdi Chtourou; Nizar Souissi
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Effects of Different Caffeine Dosages on Maximal Physical Performance and Potential Side Effects in Low-Consumer Female Athletes: Morning vs. Evening Administration
errNUTRIENTS
IF5
err2024-07-11
err0
errOAAI
errBougrine, Houda; Ammar, Achraf; Salem, Atef; Trabelsi, Khaled; Zmijewski, Piotr; Jahrami, Haitham; Chtourou, Hamdi; Souissi, Nizar
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The effect of last meal Suhoor timing on diurnal variations in cognitive performance during Ramadan fasting among female athletes
errFRONTIERS IN NUTRITION
IF5.1
err2024-04-17
err3
errOAAI
errBougrine, Houda; Ammar, Achraf; Trabelsi, Khaled; Belgacem, Ahlem; Salem, Atef; Chtourou, Hamdi; Jahrami, Haitham; Souissi, Nizar
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Nocturnal Smartphone Use Affects Sleep Quality and Cognitive and Physical Performance in Tunisian School-Age Children
erreuropean journal of health economics
IF2.6
err2024-03-28
err1
errOAAI
errAbid, Rihab; Ammar, Achraf; Maaloul, Rami; Boudaya, Mariem; Souissi, Nizar; Hammouda, Omar
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Concurrent training associated with moderate walnut consumption improved isokinetic strength, subjective sleep quality, cognitive performance and postural balance in elderly active men: a randomized controlled trial
errAGING CLINICAL AND EXPERIMENTAL RESEARCH
IF3.4
err2024-02-29
err2
errOAAI
errKamoun, Anis; Yahia, Abdelmonem; Farjallah, Mohamed Amine; Maaloul, Rami; Marzougui, Houssem; Bouaziz, Mohamed; Souissi, Nizar; Elleuch, Mohamed Habib; Hammouda, Omar
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Optimizing Short-Term Maximal Exercise Performance: The Superior Efficacy of a 6 mg/kg Caffeine Dose over 3 or 9 mg/kg in Young Female Team-Sports Athletes
errNUTRIENTS
IF5
err2024-02-25
err3
errOAAI
errBougrine, Houda; Ammar, Achraf; Salem, Atef; Trabelsi, Khaled; Jahrami, Haitham; Chtourou, Hamdi; Souissi, Nizar
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ChatGPT is not ready yet for use in providing mental health assessment and interventions
errFRONTIERS IN PSYCHIATRY
IF3.2
err2024-01-04
err21
errOAAI
errDergaa, Ismail; Fekih-Romdhane, Feten; Hallit, Souheil; Loch, Alexandre Andrade; Glenn, Jordan M.; Fessi, Mohamed Saifeddin; Ben Aissa, Mohamed; Souissi, Nizar; Guelmami, Noomen; Swed, Sarya; El Omri, Abdelfatteh; Bragazzi, Nicola Luigi; Ben Saad, Helmi
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Ramadan Fasting and Short-Term Maximal Physical Performance: Searching for Optimal Timing of the Last Meal Suhoor in Female Pre-University Handball Players
erreuropean journal of health economics
IF2.6
err2023-10-07
err4
errOAAI
errBougrine, Houda; Salem, Atef; Nasser, Nidhal; Ammar, Achraf; Chtourou, Hamdi; Souissi, Nizar
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Oxidative status alteration during aerobic-dominant mixed and anaerobic-dominant mixed effort in judokas
errHELIYON
IF3.6
err2023-10-01
err0
errOAAI
errGandouzi, Imed; Fekih, Soufien; Selmi, Okba; Chalghaf, Nasr; Turki, Mouna; Ayedi, Fatma; Guelmami, Noomen; Azaiez, Fairouz; Souissi, Nizar; Marsigliante, Santo; Muscella, Antonella
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Pre-Exercise Caffeine Intake Attenuates the Negative Effects of Ramadan Fasting on Several Aspects of High-Intensity Short-Term Maximal Performances in Adolescent Female Handball Players
errNUTRIENTS
IF5
err2023-08-03
err7
errOAAI
errBougrine, Houda; Nasser, Nidhal; Abdessalem, Raouf; Ammar, Achraf; Chtourou, Hamdi; Souissi, Nizar
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The combined effects of napping and self-selected motivation music during warming up on cognitive and physical performance of karate athletes
errFRONTIERS IN PHYSIOLOGY
IF3.4
err2023-07-13
err3
errOAAI
errBentouati, Emna; Romdhani, Mohamed; Abid, Rihab; Khemila, Syrine; Garbarino, Sergio; Souissi, Nizar
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Large-scale sporting events during the COVID-19 pandemic: insights from the FIFA World Cup 2022 in Qatar with an analysis of patterns of COVID-19 metrics
errBIOLOGY OF SPORT
IF5
err2023-01-01
err5
PREAI
errDergaa, Ismail; Ben Saad, Helmi; Zmijewski, Piotr; Farhat, Ramdan Abdelmoez; Romdhani, Mohamed; Souissi, Amine; Washif, Jad Adrian; Taheri, Morteza; Guelmami, Noomen; Souissi, Nizar; Chamari, Karim; Al Abdulla, Samya Ahmad
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Ramadan Observance Exacerbated the Negative Effects of COVID-19 Lockdown on Sleep and Training Behaviors: A International Survey on 1,681 Muslim Athletes
errFRONTIERS IN NUTRITION
IF5.1
err2022-06-30
err16
errOAAI
errRomdhani, Mohamed; Ammar, Achraf; Trabelsi, Khaled; Chtourou, Hamdi; Vitale, Jacopo A.; Masmoudi, Liwa; Nedelec, Mathieu; Rae, Dale E.; Al Horani, Ramzi A.; Ben Saad, Helmi; Bragazzi, Nicola; Donmez, Gurhan; Dergaa, Ismail; Driss, Tarak; Farooq, Abdulaziz; Hammouda, Omar; Harroum, Nesrine; Hassanmirzaei, Bahar; Khalladi, Karim; Khemila, Syrine; Mataruna-Dos-Santos, Leonardo Jose; Moussa-Chamari, Imen; Mujika, Inigo; Helu, Hussein Munoz; Fashkhami, Amin Norouzi; Paineiras-Domingos, Laisa Liane; Khaneghah, Mehrshad Rahbari; Saita, Yoshitomo; Souabni, Maher; Souissi, Nizar; Washif, Jad Adrian; Weber, Johanna; Zmijewski, Piotr; Taylor, Lee; Garbarino, Sergio; Chamari, Karim
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Exergaming During Ramadan Intermittent Fasting Improve Body Composition as Well as Physiological and Psychological Responses to Physical Exercise in Adolescents With Obesity
errFRONTIERS IN NUTRITION
IF5.1
err2022-06-28
err6
errOAAI
errAbedelmalek, Salma; Aloui, Khouloud; Denguezli Bouzgarou, Meriam; Adam, Halima; Souissi, Nizar; Chtourou, Hamdi
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Research Directions

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Co-authors
Cooperation Journals
N
Nicola Luigi Bragazzi
H-index: 89 · Papers: 1.2K
K
Karim Chamari
H-index: 88 · Papers: 589
R
Robbert Sanderman
H-index: 78 · Papers: 617
C
Carlo Castagna
H-index: 75 · Papers: 291
U
Urs Granacher
H-index: 67 · Papers: 471
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