Search

Your search keyword '"Chamari, Karim"' showing total 141 results
Start Over Author "Chamari, Karim" Journal biology of sport
141 results on '"Chamari, Karim"'

1. Mpox in sports: A comprehensive framework for anticipatory planning and risk mitigation in football based on lessons from COVID-19.

Author

Chamari, Karim, Saad, Helmi Ben, Dhahbi, Wissem, Washif, Jad Adrian, El Omri, Abdelfatteh, Zmijewski, Piotr, and Dergaa, Ismail

Abstract

The World Health Organization's declaration of mpox (formerly known as monkeypox) as a public health emergency of international concern (PHEIC) in July 2022, followed by its resurgence in 2024, has sparked concerns about its potential impact on sports, especially contact sports such as football. Although mpox is not a pandemic (as of late September 2024), the coronavirus disease 2019 (COVID-19) experience offers valuable lessons for proactive planning in sports. Our conceptual framework has been designed to draw insightful lessons from the COVID-19 pandemic to assist sports organizations in planning for and preventing similar situations. We aimed to draw lessons from COVID-19 to help sports organizations enhance practical preparedness through effective planning and mitigation strategies. Accordingly, we sought to assess the potential impact of mpox on sports, with a focus on football (soccer), and to develop strategies for prevention, management, and preparedness based on epidemiological insights and lessons from COVID-19 pandemic experience. Here we review mpox's pathophysiology and possibility of transmission in sports settings and discuss tailored strategies, including risk assessments, testing protocols, hygiene measures, and return-to-play policies. This review highlights key differences between mpox and COVID-19 in transmission, incubation, and management, emphasizing the need for customized prevention and control measures in sports. We propose innovative risk assessment methods using global positioning system tracking and machine learning for contact analysis, alongside tailored testing and hygiene protocols. We emphasize the importance of proactive planning, noting improved preparedness in the sports community compared to the early days of COVID-19. In conclusion, our proposed framework provides sports organizations with practical tools to manage potential risks associated with mpox, ensuring the continuity of activities while prioritizing public health. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

2. A new perspective on cardiovascular function and dysfunction during endurance exercise: identifying the primary cause of cardiovascular risk.

Author

Souissi, Amine, Dergaa, Ismail, Ernez Hajri, Samia, Chamari, Karim, and Saad, Helmi Ben

Abstract

Exercise mechanical efficiency typically falls within the range of approximately 20 to 25%. This means that a great part of the metabolic energy converted to generate movement is released as heat. Therefore, the rise in core temperature during endurance exercise in humans is proportional to generated work. Cutaneous vasodilation occurs when the core temperature threshold is reached. The rise in heart rate in response to thermal stress is a cardiovascular response that increases cardiac output and skin blood flow. The cardiovascular response during endurance exercise is a complex phenomenon potentially influenced by the involvement of nitric oxide in active thermoregulatory vasodilation. Excessive exercise can create high oxidative stress by disrupting the balance between free radicals' production and scavenging, resulting in impaired cardiovascular function. The above considerations are related to the severity and duration of endurance exercise. The first focus of this narrative review is to provide an updated understanding of cardiovascular function during endurance exercise. We aim to explore the potential role of oxidative stress in causing cardiovascular dysfunction during endurance exercise from a fresh perspective. Additionally, we aim to identify the primary factors contributing to cardiovascular risk during strenuous prolonged exercise by highlighting recent progress in this area, which may shed light on previously unexplained physiological responses. To ascertain the effect of endurance exercise on cardiovascular function and dysfunction, a narrative review of the literature was undertaken using PubMed, ScienceDirect, Medline, Google Scholar, and Scopus. The review highlighted that high oxidative stress (due to high levels of catecholamines, shear stress, immune system activation, and renal dysfunction) leads to a rise in platelet aggregation during endurance exercise. Importantly, we clearly revealed for the first time that endothelial damage, vasoconstriction, and blood coagulation (inducing thrombosis) are potentially the primary factors of cardiovascular dysfunction and myocardial infarction during and/or following endurance exercise. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

4. Using artificial intelligence for exercise prescription in personalised health promotion: A critical evaluation of OpenAI’s GPT-4 model

Author

Dergaa, Ismail, primary, Ben Saad, Helmi, additional, El Omri, Abdelfatteh, additional, Glenn, Jordan, additional, Clark, Cain, additional, Washif, Jad, additional, Guelmami, Noomen, additional, Hammouda, Omar, additional, Al-Horani, Ramzi, additional, Reynoso-Sánchez, Luis, additional, Romdhani, Mohamed, additional, Paineiras-Domingos, Laisa, additional, Vancini, Rodrigo, additional, Taheri, Morteza, additional, Mataruna-Dos-Santos, Leonardo, additional, Trabelsi, Khaled, additional, Chtourou, Hamdi, additional, Zghibi, Makram, additional, Eken, Özgür, additional, Swed, Sarya, additional, Ben Aissa, Mohamed, additional, Shawki, Hossam, additional, El-Seedi, Hesham, additional, Mujika, Iñigo, additional, Seiler, Stephen, additional, Zmijewski, Piotr, additional, B. Pyne, David, additional, Knechtle, Beat, additional, Asif, Irfan, additional, Drezner, Jonathan, additional, Sandbakk, Øyvind, additional, and Chamari, Karim, additional

Published
2024
Full Text
View/download PDF

6. From human writing to artificial intelligence generated text: examining the prospects and potential threats of ChatGPT in academic writing.

Author

Dergaa, Ismail, Chamari, Karim, Zmijewski, Piotr, and Saad, Helmi Ben

Abstract

Natural language processing (NLP) has been studied in computing for decades. Recent technological advancements have led to the development of sophisticated artificial intelligence (AI) models, such as Chat Generative Pre-trained Transformer (ChatGPT). These models can perform a range of language tasks and generate human-like responses, which offers exciting prospects for academic efficiency. This manuscript aims at (i) exploring the potential benefits and threats of ChatGPT and other NLP technologies in academic writing and research publications; (ii) highlights the ethical considerations involved in using these tools, and (iii) consider the impact they may have on the authenticity and credibility of academic work. This study involved a literature review of relevant scholarly articles published in peer-reviewed journals indexed in Scopus as quartile 1. The search used keywords such as "ChatGPT," "AI-generated text," "academic writing," and "natural language processing." The analysis was carried out using a quasi-qualitative approach, which involved reading and critically evaluating the sources and identifying relevant data to support the research questions. The study found that ChatGPT and other NLP technologies have the potential to enhance academic writing and research efficiency. However, their use also raises concerns about the impact on the authenticity and credibility of academic work. The study highlights the need for comprehensive discussions on the potential use, threats, and limitations of these tools, emphasizing the importance of ethical and academic principles, with human intelligence and critical thinking at the forefront of the research process. This study highlights the need for comprehensive debates and ethical considerations involved in their use. The study also recommends that academics exercise caution when using these tools and ensure transparency in their use, emphasizing the importance of human intelligence and critical thinking in academic work. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

12. 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

Author

Dergaa, Ismail, primary, Ben Saad, Helmi, additional, Zmijewski, Piotr, additional, Farhat, Ramdan, additional, Romdhani, Mohamed, additional, Souissi, Amine, additional, Washif, Jad, additional, Taheri, Morteza, additional, Guelmami, Noomen, additional, Souissi, Nizar, additional, Chamari, Karim, additional, and Al Abdulla, Samya, additional

Published
2023
Full Text
View/download PDF

14. Fractures in professional footballers: 7-years data from 106 team seasons in the Middle East.

Author

Aston Seng Huey Ngai, Beasley, Ian, Materne, Olivier, Farooq, Abdulaziz, Tabben, Montassar, Chebbi, Souhail, Ellouze, Zied, Arnáiz, Javier, Alkhelaifi, Khalid, Bahr, Roald, and Chamari, Karim

Abstract

Epidemiological studies on fractures in European professional football (soccer) are in abundance. However, such data are lacking in Middle Eastern professional footballers and information on fracture treatment is scarce. The aim of this study is to describe the epidemiology of fractures across seven seasons in Qatar Stars League (QSL) footballers. A prospective study of fractures in professional male footballers over 7 consecutive seasons (2013 to 2020), involving 3255 players and 106 team' seasons. Time loss and injuries and illnesses were recorded using standardised digital tools in accordance with international consensus procedures. Fractures were recorded according to onset mechanism, location, diagnoses, treatment and return to play. A total of 108 players sustained fractures during 638,247 hours of player exposure (88.9% training and 11.1% matches), representing 2.7% of all time-loss injuries. The incidence was 0.17 fractures per 1000 h of exposure (match and training incidence of 0.9 and 0.07 fractures /1000 h, respectively), equivalent to an average of one fracture per team per season. Fractures mostly occurred in the feet (28.2%), hands (21.1%), shoulders (11.3%) and head (i.e., face) (9.9%). Mean (median) absence was 71 (47 days), with 4.6% refractures. Only 34.3% of the fractures required surgery and nearly all players (98.1%) returned to play at the professional level. Almost all professional football players with fractures return to play at the same competitive level after an average of 10 weeks of absence (mean absence was 71 ± 81 (median: 47, Inter Quartile Range [14-93]) days). One in ten continue to play with symptoms and one in twenty may refracture. Long-term effects of fractures are still unknown. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

18. Ramadan intermittent fasting induced poorer training practices during the COVID-19 lockdown: A global cross-sectional study with 5529 athletes from 110 countries

Author

Washif, Jad, primary, B. Pyne, David, additional, Sandbakk, Øyvind, additional, Trabelsi, Khaled, additional, Aziz, Abdul Rashid, additional, Beaven, Christopher, additional, Krug, Isabel, additional, Mujika, Iñigo, additional, Ammar, Achraf, additional, Chaouachi, Anis, additional, Moussa-Chamari, Imen, additional, Aloui, Asma, additional, Chtourou, Hamdi, additional, Farooq, Abdulaziz, additional, Haddad, Monoem, additional, Romdhani, Mohamed, additional, Salamh, Paul, additional, Tabben, Montassar, additional, Wong, Del, additional, Zerguini, Yacine, additional, DeLang, Matthew D., additional, Taylor, Lee, additional, Ben Saad, Helmi, additional, and Chamari, Karim, additional

Published
2022
Full Text
View/download PDF

23. Globally altered sleep patterns and physical activity levels by confinement in 5056 individuals: ECLB COVID-19 international online survey

Author

Trabelsi, Khaled, primary, Ammar, Achraf, additional, Masmoudi, Liwa, additional, Boukhris, Omar, additional, Chtourou, Hamdi, additional, Bouaziz, Bassem, additional, Brach, Michael, additional, Bentlage, Ellen, additional, How, Daniella, additional, Ahmed, Mona, additional, Mueller, Patrick, additional, Mueller, Notger, additional, Hsouna, Hsen, additional, Romdhani, Mohamed, additional, Hammouda, Omar, additional, Paineiras-Domingos, Laisa, additional, Braakman-jansen, Annemarie, additional, Wrede, Christian, additional, Bastoni, Sophia, additional, Pernambuco, Carlos, additional, Mataruna-Dos-Santos, Leonardo, additional, Taheri, Morteza, additional, Irandoust, Khadijeh, additional, Khacharem, Aïmen, additional, Bragazzi, Nicola, additional, Strahler, Jana, additional, Washif, Jad, additional, Andreeva, Albina, additional, Bailey, Stephen, additional, Acton, Jarred, additional, Mitchell, Emma, additional, Bott, Nicholas, additional, Gargouri, Faiez, additional, Chaari, Lotfi, additional, Batatia, Hadj, additional, khoshnami, Samira, additional, Samara, Evangelia, additional, Zisi, Vasiliki, additional, Sankar, Parasanth, additional, Ahmed, Waseem, additional, Ali, Gamal, additional, Abdelkarim, Osama, additional, Jarraya, Mohamed, additional, Abed, Kais, additional, Moalla, Wassim, additional, Souissi, Nafaa, additional, Aloui, Asma, additional, Souissi, Nizar, additional, Gemert-Pijnen, Lisette, additional, Riemann, Bryan, additional, Riemann, Laurel, additional, Delhey, Jan, additional, Gómez-Raja, Jonathan, additional, Epstein, Monique, additional, Sanderman, Robbert, additional, Schulz, Sebastian, additional, Jerg, Achim, additional, Al-Horani, Ramzi, additional, Mansi, Taysir, additional, Dergaa, Ismail, additional, Jmail, Mohamed, additional, Barbosa, Fernando, additional, Ferreira-Santos, Fernando, additional, Šimunič, Boštjan, additional, Pišot, Rado, additional, Pišot, Saša, additional, Gaggioli, Andrea, additional, Steinacker, Jürgen, additional, Zmijewski, Piotr, additional, Clark, Cain C.T., additional, Apfelbacher, Christian, additional, Glenn, Jordan, additional, Saad, Helmi, additional, Chamari, Karim, additional, Driss, Tarak, additional, and Hoekelmann, Anita, additional

Published
2021
Full Text
View/download PDF

28. Organising football matches with spectators during the COVID-19 pandemic: What can we learn from the Amir Cup Football Final of Qatar 2020? A call for action

Author

Dergaa, Ismail, primary, Varma, Amit, additional, Tabben, Montassar, additional, Ali Malik, Rubena, additional, Sheik, Sanaulla, additional, Vedasalam, Sakthikumar, additional, Khellil Abbassi, Ahmed, additional, Almulla, Jassim, additional, Chaabane, Mokhtar, additional, and Chamari, Karim, additional

Published
2021
Full Text
View/download PDF

29. Effects of home confinement on mental health and lifestyle behaviours during the COVID-19 outbreak: Insight from the ECLB-COVID19 multicenter study

Author

Ammar, Achraf, primary, Trabelsi, Khaled, additional, Brach, Michael, additional, Chtourou, Hamdi, additional, Boukhris, Omar, additional, Masmoudi, Liwa, additional, Bouaziz, Bassem, additional, Bentlage, Ellen, additional, How, Daniella, additional, Ahmed, Mona, additional, Mueller, Patrick, additional, Mueller, Notger, additional, Hammouda, Omar, additional, Paineiras-Domingos, Laisa, additional, Braakman-jansen, Annemarie, additional, Wrede, Christian, additional, Bastoni, Sophia, additional, Pernambuco, Carlos, additional, Mataruna, Leonardo, additional, Taheri, Morteza, additional, Irandoust, Khadijeh, additional, Khacharem, Aïmen, additional, Bragazzi, Nicola, additional, Strahler, Jana, additional, Adrian, Jad, additional, Andreeva, Albina, additional, Glenn, Jordan, additional, Bott, Nicholas, additional, Gargouri, Faiez, additional, Chaari, Lotfi, additional, Batatia, Hadj, additional, khoshnami, Samira, additional, Samara, Evangelia, additional, Zisi, Vasiliki, additional, Sankar, Parasanth, additional, Ahmed, Waseem, additional, Ali, Gamal, additional, Abdelkarim, Osama, additional, Jarraya, Mohamed, additional, Abed, Kais, additional, Moalla, Wassim, additional, Romdhani, Mohamed, additional, Aloui, Asma, additional, Souissi, Nizar, additional, GemertPijnen, Lisette, additional, Riemann, Bryan, additional, Riemann, Laurel, additional, Delhey, Jan, additional, Gómez-Raja, Jonathan, additional, Epstein, Monique, additional, Sanderman, Robbert, additional, Schulz, Sebastian, additional, Jerg, Achim, additional, Al-Horani, Ramzi, additional, Mansi, Taysir, additional, Jmail, Mohamed, additional, Barbosa, Fernando, additional, Ferreira-Santos, Fernando, additional, Šimunič, Boštjan, additional, Pišot, Rado, additional, Pišot, Saša, additional, Gaggioli, Andrea, additional, Zmijewski, Piotr, additional, Bailey, Stephen, additional, Steinacker, Jürgen, additional, Chamari, Karim, additional, Driss, Tarak, additional, and Hoekelmann, Anita, additional

Published
2021
Full Text
View/download PDF

33. The COVID-19 pandemic: how to maintain a healthy immune system during the lockdown - a multidisciplinary approach with special focus on athletes.

Author

Yousfi, Narimen, Bragazzi, Nicola Luigi, Briki, Walid, Zmijewski, Piotr, and Chamari, Karim

Abstract

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, countries around the world have been implementing various measures, including school and institutional closures, lockdown and targeted quarantine for suspected infected individuals. More than a third of the world's population have been home confined less than 4 months after the start of the outbreak. The present article aims to advise healthy individuals and athletes who are in lockdown regarding their lifestyle in order to keep healthy, safe and fit. The advice contained in the present article could apply to anyone aiming at remaining in good physical and mental health while forced to undergo lockdown, quarantine, or limited movement (movement control order). Boosting the immune system is crucial during such periods for confined people and especially for confined athletes. Specific recommendations must be followed concerning boosting the immune system through physiological and psychological management. This article analyses the available scientific evidence in order to recommend a practical approach, focusing on nutrition, intermittent fasting or caloric restriction, vitamin D insufficiency, sleep pattern, exercise, and psychodynamic aspects as factors impacting the immune system and human health in general. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
View/download PDF

39. Arabic translation and cross-cultural adaptation of the Sport Concussion Assessment Tool 5 (SCAT5).

Author

Holtzhausen, Louis J., Souissi, Sofiane, Al Sayrafi, Omar, May, Awartani, Farooq, Abdulaziz, Grant, Catharina C., Korakakis, Vasileios, Rabia, Safia, Segers, Souhaila, and Chamari, Karim

Abstract

The aim was to create a Modern Standard Arabic SCAT5 version for different Arabic dialects. This translation and cross-cultural adaptation was performed in eight stages: initial translations, reconciliation of translations and cultural adaptation, back translation, appraisal of back translations, validation of the translation, review and adjustment by reconciliation committee, pretesting in 12 football players and document finalisation. As an alternative to the problematic Months In Reverse Order Test (MIROT) in Arabic, the Serial 3s test (32 Arabic and 30 English participants), the Days of the Week Backwards test (DWBT), and the 'Adding Serial 3s' test were tested (30 English and 30 Arabic participants) for accuracy, difficulty and time of completion. The Arabic SCAT5 was similar and comparable to the original English version (7-point Likert scales =< 2). Testing of the pre- final version of the Arabic SCAT5 took 20.4 (SD 3.4) and 17.7 (SD 3.0) minutes respectively to complete and was found acceptable in terms of clarity, understandability, grammatical correctness and coherence. The Arabic Serial 3s test (subtraction version) was unsuitable due to high completion time, low pass rate and high difficulty perception [time = 47.2 (SD 28.0) s; accuracy = 55.2%; difficulty = 3.2 (SD 1.1)]. The Arabic DWBT was too fast and undemanding for concentration testing [time = 4.6 (SD 1.5) s; accuracy = 90%; difficulty = 1.1 (SD 0.3)]. The Adding Serial 3s tests produced similar completion times [18.4 (SD 6.8) vs. 21.1 (SD 5.3), p = 0.088], accuracy (100%) and self-rated difficulty [English = 2.0 (SD 0.7) vs. Arabic-speaking participants = 2.1 (SD 0.8), p = 0.512] and was therefore adopted to replace the MIROT. This culturally adapted Arabic-SCAT5 questionnaire is the first concussion assessment tool available for Arabic-speaking healthcare providers and athletes. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results