Article
Multidisciplinary Sciences
Behzad Taati, Hamid Arazi, Craig A. Bridge, Emerson Franchini
Summary: The present study introduces a new multidimensional taekwondo-specific test for estimating aerobic power, anaerobic fitness, and agility. The results demonstrate that the TAAA test is a valid and simple tool for monitoring VO2max, anaerobic fitness, and agility in male taekwondo athletes.
Article
Medicine, General & Internal
Max Lennart Eckstein, Melanie Schwarzinger, Sandra Haupt, Nadine Bianca Wachsmuth, Rebecca Tanja Zimmer, Harald Sourij, Paul Zimmermann, Beate Elisabeth Maria Zunner, Felix Aberer, Othmar Moser
Summary: The aim of this systematic review was to investigate the response of individuals with metabolic diseases to combat sports and evaluate their feasibility, safety, and applicability. The review found that combat sports are safe and feasible for individuals with type 1 diabetes, metabolic syndrome, overweight, and obesity. These individuals showed improved blood sugar control and physical health in combat sports. However, no recommendations can be made for individuals with type 2 diabetes due to the lack of evidence.
JOURNAL OF CLINICAL MEDICINE
(2022)
Article
Physiology
Ibrahim Ouergui, Emerson Franchini, Hamdi Messaoudi, Hamdi Chtourou, Anissa Bouassida, Ezdine Bouhlel, Luca Paolo Ardigo
Summary: The study investigated the effects of area sizes and effort-pause ratios on physiological responses during taekwondo combats, with smaller area sizes and free combat resulting in higher physiological responses. Results from the study showed that taekwondo training is effective in improving VO2max and agility.
FRONTIERS IN PHYSIOLOGY
(2021)
Article
Physiology
Ibrahim Ouergui, Slaheddine Delleli, Hamdi Messaoudi, Craig Alan Bridge, Hamdi Chtourou, Emerson Franchini, Luca Paolo Ardigo
Summary: This study compared the effects of repeated sprint training (RST) and repeated high-intensity technique training (RTT) on physiological responses, perceptual responses, and performance in simulated taekwondo combats. The results showed similar physiological adjustments in both RST and RTT, but RTT had more favorable perceptual responses and combat-related performance. These findings emphasize the importance of training specificity in combat sports.
INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE
(2023)
Article
Multidisciplinary Sciences
Dagmara Budnik-Przybylska, Pawel Syty, Maria Kazmierczak, Marta Labuda, Lukasz Dolinski, Adrian Kastrau, Patryk Jasik, Jacek Przybylski, Selenia di Fronso, Maurizio Bertollo
Summary: This study examines the effects of individual differences on measuring arousal levels using imagery in mental training. The results show an association between neuroticism, prestart anxiety, and general tendency to use imagery with arousal levels.
SCIENTIFIC REPORTS
(2023)
Article
Multidisciplinary Sciences
Filipe A. B. Sousa, Fulvia B. Manchado-Gobatto, Natalia de A. Rodrigues, Gustavo G. de Araujo, Claudio A. Gobatto
Summary: The study found that running on a nonmotorized treadmill results in higher glycolytic demand under the same relative internal load compared to running on a motorized treadmill, but with a similar aerobic response and correlated intensity determination.
SCIENTIFIC REPORTS
(2022)
Article
Psychology, Multidisciplinary
David Trafimow
Summary: This article discusses different interpretations of internal and external validity and integrates them with a taxonomy that includes theoretical, auxiliary, statistical, and inferential assumptions. The study finds that internal and external validity increase or decrease together when there is an emphasis on underlying theories. Finally, the integration implies the desirability of some changes in typical research advice and practice.
PERSPECTIVES ON PSYCHOLOGICAL SCIENCE
(2023)
Article
Computer Science, Interdisciplinary Applications
Amelia J. Averitt, Patrick B. Ryan, Chunhua Weng, Adler Perotte
Summary: Evidence-Based Medicine encourages clinicians to seek reputable evidence, with randomized controlled trials considered the least biased. However, RCTs often face issues with poor generalizability, hindering the translation of clinical research into practice. Factors contributing to this lack of generalizability have not been fully summarized.
JOURNAL OF BIOMEDICAL INFORMATICS
(2021)
Article
Sport Sciences
Daniel W. T. Wundersitz, Craig A. Staunton, Brett A. Gordon, Michael IC. Kingsley
Summary: Playing on different surfaces can affect external demands and physiological responses, with concrete surfaces exhibiting the least impact absorption. Despite this, there were no significant differences in external demands between surfaces, but energy expenditure was highest on natural grass.
JOURNAL OF SPORTS SCIENCES
(2021)
Article
Multidisciplinary Sciences
Erich Hohenauer, Livia Freitag, Joseph T. Costello, Thomas B. Williams, Thomas Kueng, Wolfgang Taube, Miriam Herten, Ron Clijsen
Summary: This partially randomised controlled, crossover study investigated the effects of normobaric hypoxia (NH) and hypobaric hypoxia (HH) on cognitive performance and physiological response. The study found no significant differences in cognitive performance and cerebral oxygenation between the hypoxic conditions, but varied physiological responses were observed.
Article
Environmental Sciences
Jung-Hoon Nam, Eung-Joon Kim, Eun-Hyung Cho
Summary: The purpose of this study was to identify the sport psychological skills of Taekwondo athletes and to develop a scale measuring such skills. We identified six core sport psychological skills and developed a scale comprising 18 items.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Sport Sciences
Ibrahim Ouergui, Sana Kamzi, Nizar Houcine, Salma Abedelmalek, Anissa Bouassida, Ezdine Bouhlel, Emerson Franchini
Summary: The study investigated the impact of combat area size and effort-pause ratio variations on physiological and perceptive responses during female judo combats. Results showed that while [La] and heart rate values did not differ significantly based on time structure and area sizes, [La] post combat was higher in free randori compared to 3:1 ratio, and in the 4 x 4-m area compared to larger areas. Moreover, RPE was higher in the 4 x 4 m compared to the 8 x 8 m area.
JOURNAL OF STRENGTH AND CONDITIONING RESEARCH
(2021)
Article
Biotechnology & Applied Microbiology
Shang Pan, Zhaoyan Li, Jiayi Wang, Xuefei Li, Lingzi Meng, Yunhui Chen, Mu Su, Zhen Li
Summary: This study investigated the physiological responses and bioaccumulation mechanisms of the filamentous fungus Aspergillus niger under the coexistence of lead (Pb) and cadmium (Cd). The results showed that both Pb and Cd accumulated in the extracellular and intracellular regions of the fungal cells, with Pb accumulation being ten times higher than Cd. Cd exhibited stronger toxicity to A. niger, leading to increased cell diameter and extracellular substances. The study also revealed that Pb can form multiple minerals, weakening its toxicity on the cell surface.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Review
Nutrition & Dietetics
Slaheddine Delleli, Ibrahim Ouergui, Hamdi Messaoudi, Khaled Trabelsi, Achraf Ammar, Jordan M. Glenn, Hamdi Chtourou
Summary: This systematic review with meta-analysis examines the effects of caffeine supplementation on combat sports performance. The results suggest that caffeine has a small but evident effect on handgrip strength and the total number of throws in judo fitness tests. It also increases blood lactate concentration and heart rate in anaerobic exercise and simulated combat. However, caffeine does not have an impact on other performance measures such as jump height, strength-endurance, offensive actions, and perceived exertion.
Review
Cell Biology
Camilla Capaccia, Silvana Diverio, Danilo Zampini, Gabriella Guelfi
Summary: This review highlights the important role of cross-talk between P53 and microRNAs in physiological stress signaling. P53 regulates miRNA expression and maturation, while miRNAs control the level of P53 through direct or indirect means. The complex regulatory scheme emphasizes the relevance of miRNAs in the P53 network.
Article
Rehabilitation
Joao Paulo Lopes-Silva, Dillon Richardson, David H. H. Fukuda, Emerson Franchini
Summary: The aim of the study was to determine the optimal interval between competitions for success in World Para Powerlifting events. The results showed that for World Cup events, an interval of 22-30 weeks increased the probability of winning a medal, while for World Championships and Paralympic Games, intervals of 23-31 weeks and 40 weeks or more were associated with higher chances of winning a medal. However, there were no significant differences in preparation intervals for Regional Games/Championships. Para Powerlifting athletes participating in major events can optimize their performance with specific preparation intervals.
AMERICAN JOURNAL OF PHYSICAL MEDICINE & REHABILITATION
(2023)
Article
Nutrition & Dietetics
Sasa Krstulovic, Emerson Franchini, David H. Fukuda, Jeffrey R. Stout, Oscar DelCastillo-Andres, Goran Kuvacic
Summary: This study examined the long-term impact of weight cycling on the health, eating habits, physical activity, and lifestyle of former combat sports athletes, and created a reliable questionnaire to investigate this issue.
BRITISH JOURNAL OF NUTRITION
(2023)
Article
Medicine, General & Internal
Willian C. Botta, Emerson Franchini, Daniele Gabriel-Costa, Fabio A. D. Campos
Summary: This study aimed to investigate a combination of specific physical tests for predicting physical performance on simulated tasks and it identified a test battery that could improve the reliability of physical assessments for the Brazilian Air Force, focusing on combat readiness levels.
Article
Hospitality, Leisure, Sport & Tourism
Cebrail Gencoglu, Suleyman Ulupinar, Serhat ozbay, Ibrahim Ouergui, Emerson Franchini
Summary: This study investigated the test-retest reliability and discriminant validity of the Kickboxing Anaerobic Speed Test (KAST) and compared it to the maximal cycling sprint test (MCST). The results showed that both KAST and cycling tests were able to effectively discriminate between elite and sub-elite kickboxers.
RESEARCH QUARTERLY FOR EXERCISE AND SPORT
(2023)
Article
Hospitality, Leisure, Sport & Tourism
Marcelo Naname Junior, Joao Paulo Lopes-Silva, Monica Yuri Takito, Emerson Franchini
Summary: This study retrospectively analyzed 7780 athletes who competed in the World Championship (WC) and Olympic Games (OG) between 2009 and 2021. The findings showed that winning a medal at the cadet and junior Judo World Championship increased the probability of winning a medal at the senior level, with male athletes having a probability range of 3.3-3.8 and female athletes having a probability range of 5.3-5.4. Furthermore, athletes who did not compete in the junior WC had a higher probability of winning a medal at the senior level. The results indicate the importance of early success in junior tournaments for future senior performance in WC and OG.
RESEARCH QUARTERLY FOR EXERCISE AND SPORT
(2023)
Review
Biochemistry & Molecular Biology
Emerson Franchini
Summary: This narrative review focuses on the estimation of energy system contributions during match simulations of different Olympic combat sports. The results showed that Olympic combat sports primarily rely on the oxidative system for energy, but key scoring actions are likely fueled by anaerobic pathways.
Article
Psychology, Experimental
Ibrahim Ouergui, Eya Jebabli, Slaheddine Delleli, Hamdi Messaoudi, Craig Alan Bridge, Hamdi Chtourou, Emerson Franchini, Christopher Garrett Ballmann, Luca Paolo Ardigo
Summary: This study aimed to investigate the effects of warm-up music preference and loudness on physical performance, perceived exertion, and enjoyment in young taekwondo athletes. The results showed that listening to preferred music with a higher volume resulted in better performance and lower perceived exertion during taekwondo tasks. These findings have important implications for enhancing taekwondo training and performance.
PERCEPTUAL AND MOTOR SKILLS
(2023)
Article
Psychology, Experimental
David H. H. Fukuda, Joao Paulo Lopes-Silva, Monica Yuri Takito, Emerson Franchini
Summary: This study aimed to investigate the presence of the relative age effect (RAE) in different age groups, weight categories, sexes, and over different time frames in international-level judo competition. A total of 9451 judo athletes who participated in the Olympic Games and/or World Championships between 1993 and 2020 were included in the analysis. The results showed that RAE was more prevalent in males than females, and in Cadets and Juniors compared to Seniors. Heavyweight and middleweight categories exhibited RAE in Senior and Junior males, while in females, it was present only in Cadet heavyweights. RAE was also found to be more pronounced in recent years for Senior male judo athletes. Poisson analysis provided additional insights, capturing RAE detection during an earlier time frame not apparent in the traditional analysis.
PERCEPTUAL AND MOTOR SKILLS
(2023)
Article
Physiology
Ibrahim Ouergui, Slaheddine Delleli, Hamdi Messaoudi, Craig Alan Bridge, Hamdi Chtourou, Emerson Franchini, Luca Paolo Ardigo
Summary: This study compared the effects of repeated sprint training (RST) and repeated high-intensity technique training (RTT) on physiological responses, perceptual responses, and performance in simulated taekwondo combats. The results showed similar physiological adjustments in both RST and RTT, but RTT had more favorable perceptual responses and combat-related performance. These findings emphasize the importance of training specificity in combat sports.
INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE
(2023)
Article
Multidisciplinary Sciences
Mitchell James Finlay, Richard Michael Page, Matt Greig, Craig Alan Bridge
Summary: This study utilized a vertically mounted force plate to quantify the peak punch force and rate of force development (RFD) of amateur boxers. The force plate showed excellent reliability and sensitivity in measuring punch performance, and could detect small-to-moderate changes in punch performance. Among different types of punches, the rear hook had the highest impact forces and RFD.
Article
Multidisciplinary Sciences
Ibrahim Ouergui, Slaheddine Delleli, Craig Alan Bridge, Hamdi Messaoudi, Hamdi Chtourou, Christopher Garrett Ballmann, Luca Paolo Ardigo, Emerson Franchini
Summary: The study aimed to assess the effects of acute caffeine supplementation on physical performance and perceived exertion in male and female athletes with varying expertise in taekwondo-specific tasks. The findings showed that caffeine supplementation improved performance in elite athletes compared to sub-elite athletes, and males performed better than females regardless of the supplement condition.
SCIENTIFIC REPORTS
(2023)
Article
Physiology
Ibrahim Ouergui, Slaheddine Delleli, Hamdi Messaoudi, Craig Alan Bridge, Hamdi Chtourou, Emerson Franchini, Luca Paolo Ardigo
Summary: This study assessed the effects of different effort-to-pause ratios and rest intervals on taekwondo physical performance. The results showed that all of the preloads provided higher performance outputs compared to the control trial. However, the specific effects varied for different fitness tests and required different lengths of rest intervals.
FRONTIERS IN PHYSIOLOGY
(2023)
Article
Sport Sciences
Joao Paulo Lopes-Silva, Dillon Richardson, Emerson Franchini
Summary: This study quantified the age and performance of Paralympic powerlifters and explored age-related differences in sex, weight categories, and competition achievements. The results showed that gold medalists were younger and male powerlifters were stronger. Paralympic powerlifters lifted heavier loads in the Paralympic Games than in the World Championships, and younger athletes performed better. There were also differences in age and load between different weight categories.
JOURNAL OF SCIENCE IN SPORT AND EXERCISE
(2023)
Article
Sport Sciences
Alex Itaborahy, Raul Freire, Matheus Hausen
Summary: This study aimed to assess the impact of different threshold-based artefact correction levels in Kubios software on HRV-derived parameters in male and female elite athletes. The results showed that the Very Low and Low threshold-based artefact correction levels were more suitable for processing HRV data from male and female elite athletes when using Kubios.
JOURNAL OF SCIENCE IN SPORT AND EXERCISE
(2023)