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Search Results (281)

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13 pages, 538 KB  
Article
The Skin Microbiome Profile of Contact Sports Athletes—Focus on Sexual Dimorphism and Athlete–Non-Athlete Differences
by Irina Kalabiska, Dorina Annar, Gergely Babszky, Matyas Jokai, Zoltan Borbas, Gergely Hajdu, Fanny Zselyke Ratz-Sulyok, Csilla Jang-Kapuy, Gergely Palinkas, Harjit Pal Bhattoa and Annamaria Zsakai
Sports 2025, 13(9), 288; https://doi.org/10.3390/sports13090288 - 26 Aug 2025
Viewed by 950
Abstract
Background: Athletes’ skin is exposed to increased microbial challenges due to rigorous physical activity, perspiration, constant “skin-to-skin” contact, frequent showering, use of hygiene products, and environmental factors present in training settings. This study aims to characterize the skin microbiome communities of young wrestlers [...] Read more.
Background: Athletes’ skin is exposed to increased microbial challenges due to rigorous physical activity, perspiration, constant “skin-to-skin” contact, frequent showering, use of hygiene products, and environmental factors present in training settings. This study aims to characterize the skin microbiome communities of young wrestlers and kickboxers in comparison with their non-athlete age-peers. Methods: A total of 56 combat sport athletes (30 males and 26 females, mean age ± SD = 18.2 ± 1.5 years) and 25 non-athlete youths (control group: 13 males and 12 females, mean age ± SD = 19.8 ± 1.2 years) voluntarily consented to participate in the study conducted by our research team in 2023 and 2024. The skin microbiome analysis involved standardized sampling, DNA isolation, molecular sequencing, and bioinformatic analysis, thus enabling detailed characterization and comparison of the skin microbial community in contact sports athletes and the control group. Results: Our results revealed notable sexual dimorphism in the skin microbiome composition of youth. Males showed a higher relative abundance of bacterial genera associated with nosocomial infections and respiratory diseases, while females had more skin inflammation- and infection-related genera (relative abundances in males vs. in females: Corynebacterium—12.0 vs. 7.2; Luteimonas—4.4. vs. 1.4; Paracoccus—8.8 vs. 5.0; Psychrobacter—6.3 vs. 4.4; Cutibacterium—6.4 vs. 11.4; Kocuria—1.6 vs. 3.9; Micrococcus—5.8 vs. 8.5; Pseudomonas—1.2 vs. 3.4; Streptococcus 3.3 vs. 6.2). We also found skin microbiome differences between athletes and non-athletes in both sexes: wrestlers, who experience frequent skin-to-skin contact and wear less covering sportswear, had microbiome profiles distinct from both kickboxers and non-athletes (relative abundances in athletes vs. in non-athletes: Psychrobacter—7.3 vs. 0.4; Staphylococcus 9.5 vs. 18.5; predominance of genera by sports type: relative abundance of Cutibacterium and Streptococcus was higher in kickboxers, and relative abundance of Acinetobacter, Enhydrobacter, Micrococcus, and Enhydrobacter was higher in wrestlers). Bacteria linked to skin infections (e.g., Aliterella, Arthrobacter, and Empedobacter) were present in around 30% of wrestlers and kickboxers but were absent in the control group. Conclusions: These results underscore the heightened risk of skin infections in contact sports and highlight the importance of regular microbiome monitoring and hygiene protocols among young athletes. Full article
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17 pages, 1601 KB  
Article
Influence of Anthropometric Characteristics and Muscle Performance on Punch Impact
by Manuel Pinto, João Crisóstomo, Christopher Kirk, Javier Abián-Vicén and Luís Monteiro
Sports 2025, 13(8), 281; https://doi.org/10.3390/sports13080281 - 21 Aug 2025
Viewed by 411
Abstract
Despite the known relevance of punch impact in boxing, limited evidence exists regarding how anthropometric and muscle performance variables contribute to it. This study investigated the relationship between anthropometric characteristics, muscle power and strength performance, and punch impact power in 69 boxing practitioners [...] Read more.
Despite the known relevance of punch impact in boxing, limited evidence exists regarding how anthropometric and muscle performance variables contribute to it. This study investigated the relationship between anthropometric characteristics, muscle power and strength performance, and punch impact power in 69 boxing practitioners (mean ± SD age: 27.0 ± 6.1 years). Anthropometric variables (body height (BH), armspan (AS), body mass (BM)) and muscle power and strength tests (countermovement jump (CMJ), one repetition maximum in bench press (1RM BP), and handgrip strength (HS)) were assessed. Punch impact power was assessed with PowerKube (PK), a specific device designed to measure punch impact power. Punch impact power was positively correlated with BH, AS, and BM. Linear regression indicated that BH and AS explained about 36% of the variance in Straight punch impact power and 30–34% in Hook punch impact power. BM showed weaker predictive capacity, explaining 10% of the variance in Straight punch impact power and 11% in Hook punch impact power. When comparing punch impact power differences across groups with varying BH, AS, and BM, it was found that groups with High BH exhibited higher punch impact power than the groups with Low and Medium BH for both Straight and Hook punches. For AS, the High AS group also demonstrated higher punch impact power, with similar trends for BM, where significant differences were observed only between the High and Low BM groups. Additionally, our findings confirm significant relationships between anthropometric characteristics, muscle power, and strength performance. These findings highlight the importance of a comprehensive assessment of anthropometric profiles, alongside muscle power and strength evaluations, to better predict punch impact power. This approach provides valuable insights for boxing training and may also inform exercise programming for the general population. Full article
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25 pages, 824 KB  
Review
Effects of Weight-Cutting Practices on Sleep, Recovery, and Injury in Combat Sports: A Scoping Review
by Adrian Kużdżał, Oleg Bilianskyi, Zbigniew Wroński, Grzegorz Magoń, Gracjan Olaniszyn, Magdalena Hagner-Derengowska and Anna Michalska
J. Funct. Morphol. Kinesiol. 2025, 10(3), 319; https://doi.org/10.3390/jfmk10030319 - 18 Aug 2025
Viewed by 625
Abstract
Objectives: This scoping review aims to synthesize the methodological characteristics of weight-cutting strategies, summarize their effects on sleep, recovery, and injury outcomes, and identify research gaps. Methods: Following the PRISMA guidelines, searches were conducted on 20 May 2025, across PubMed, Scopus, and Web [...] Read more.
Objectives: This scoping review aims to synthesize the methodological characteristics of weight-cutting strategies, summarize their effects on sleep, recovery, and injury outcomes, and identify research gaps. Methods: Following the PRISMA guidelines, searches were conducted on 20 May 2025, across PubMed, Scopus, and Web of Science, with snowball citation tracking and expert consultation to enhance retrieval. Inclusion criteria targeted peer-reviewed studies involving competitive or recreational combat sport athletes (all ages and sexes) undergoing weight-cutting practices, reporting outcomes on sleep (e.g., quality and duration), recovery (e.g., perceived fatigue and biomarkers), or injury incidence (e.g., reported injuries and odds ratios). Studies included randomized controlled trials, non-randomized trials, or cohort studies with or without comparator groups. The risk of bias was assessed using the RoB 2 tool for randomized trials and the ROBINS-I tool for non-randomized studies. Results: From 2784 records, 17 studies met the inclusion criteria. Participant ages ranged from 17.79 ± 0.75 to 30.1 ± 7.5 years, predominantly national-level combat sport athletes (wrestling, judo, taekwondo, and MMA). Rapid weight loss (RWL, 2–10% body mass loss over 1–7 days) via food/fluid restriction, sauna use, and caloric deficits consistently increased creatine kinase (peaking at 713.4 ± 194.6 U/L), perceived fatigue (41.8 ± 0.9 to 51.3 ± 2.0 A.U.), and injury rates (45.62 injuries/1000 athletic exposures in females). Cortisol responses showed increases in some studies (from 499.9 ± 107.8 to 731.6 ± 80.2 nmol/L) and decreases in others (from 603.2 ± 146.8 to 505.8 ± 118.4 nmol/L). Sleep quality showed mild worsening (5.15 ± 1.83 to 5.52 ± 1.71 A.U.), and perceived recovery declined post-RWL (101.40 ± 2.52 to 87.63 ± 2.47 A.U.). Conclusions: RWL in combat sports consistently impairs recovery, increases muscle damage and fatigue, and increases injury risk, though sleep quality effects are less pronounced. Variability in weight-cutting protocols, outcome measures, and study designs shows the need for standardized methodologies, broader inclusion of female athletes, and longitudinal studies to assess long-term impacts. Full article
(This article belongs to the Special Issue Perspectives and Challenges in Sports Medicine for Combat Sports)
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12 pages, 1122 KB  
Article
Neuromuscular Strategies in Novice and Advanced Taekwondo Athletes During Consecutive Roundhouse Kicks
by Mauricio Barramuño-Medina, Pablo Aravena-Sagardia, Pablo Valdés-Badilla, Jordan Hernandez-Martinez, Tomás Espinoza-Palavicino, Cristian Sandoval and Germán Gálvez-García
Appl. Sci. 2025, 15(15), 8356; https://doi.org/10.3390/app15158356 - 27 Jul 2025
Viewed by 521
Abstract
Background: This study investigates differences in muscle co-contraction and peak electromyography (EMG) activity between novice and advanced Taekwondo athletes during consecutive roundhouse (bandal chagui) kicks, examining the influence of body composition and experience level. Methods: Sixteen Taekwondo athletes (12 males, 4 [...] Read more.
Background: This study investigates differences in muscle co-contraction and peak electromyography (EMG) activity between novice and advanced Taekwondo athletes during consecutive roundhouse (bandal chagui) kicks, examining the influence of body composition and experience level. Methods: Sixteen Taekwondo athletes (12 males, 4 females; mean age: 20.5 ± 4.3 years) were divided into novice (n = 8) and advanced (n = 8) groups. Muscle co-contraction indices and peak EMG activity across 15 consecutive kicks were assessed in key lower limb muscles, including the biceps femoris (BF), lateral gastrocnemius (LG), rectus femoris (RF), soleus (SO), semitendinosus (ST), tibialis anterior (TA), vastus lateralis (VL), and vastus medialis (VM). Results: Advanced athletes exhibited significantly higher co-contraction indices in BF–RF, VM–BF, and SO–TA pairs (p < 0.05) and increased peak EMG trends in the BF and LG (p < 0.05). Novice athletes showed significantly reduced peak EMG increases in the RF, VM, and VL. EMG trends were influenced by body composition, with principal component analysis indicating that higher fat mass and lower muscle mass were associated with greater variations in muscle activation. Conclusions: These findings suggest that advanced athletes refine motor control through increased co-contraction, improving stability and efficiency, while novices exhibit less optimized coordination patterns. This study provides insights into the neuromechanical adaptations associated with expertise development in Taekwondo. Full article
(This article belongs to the Special Issue Application of Biomechanics in Sports Science)
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16 pages, 1817 KB  
Article
Is Brazilian Jiu-Jitsu a Traumatic Sport? Survey on Italian Athletes’ Rehabilitation and Return to Sport
by Fabio Santacaterina, Christian Tamantini, Giuseppe Camarro, Sandra Miccinilli, Federica Bressi, Loredana Zollo, Silvia Sterzi and Marco Bravi
J. Funct. Morphol. Kinesiol. 2025, 10(3), 286; https://doi.org/10.3390/jfmk10030286 - 25 Jul 2025
Viewed by 787
Abstract
Background: Brazilian Jiu-Jitsu (BJJ) is a physically demanding sport associated with a notable risk of musculoskeletal injuries. Understanding injury patterns, rehabilitation approaches, and psychological readiness to return to sport (RTS) is essential for prevention and management strategies. This study aimed to investigate injury [...] Read more.
Background: Brazilian Jiu-Jitsu (BJJ) is a physically demanding sport associated with a notable risk of musculoskeletal injuries. Understanding injury patterns, rehabilitation approaches, and psychological readiness to return to sport (RTS) is essential for prevention and management strategies. This study aimed to investigate injury characteristics among Italian BJJ athletes, assess their rehabilitation processes and psychological recovery, and identify key risk factors such as belt level, body mass index (BMI), and training load. Methods: A cross-sectional survey was conducted among members of the Italian BJJ community, including amateur and competitive athletes. A total of 360 participants completed a 36-item online questionnaire. Data collected included injury history, rehabilitation strategies, RTS timelines, and responses to the Injury-Psychological Readiness to Return to Sport (I-PRRS) scale. A Random Forest machine learning algorithm was used to identify and rank potential injury risk factors. Results: Of the 360 respondents, 331 (92%) reported at least one injury, predominantly occurring during training sessions. The knee was the most frequently injured joint, and the action “attempting to pass guard” was the most reported mechanism. Most athletes (65%) returned to training within one month. BMI and age emerged as the most significant predictors of injury risk. Psychological readiness scores indicated moderate confidence, with the lowest levels associated with playing without pain. Conclusions: Injuries in BJJ are common, particularly affecting the knee. Psychological readiness, especially confidence in training without pain, plays a critical role in RTS outcomes. Machine learning models may aid in identifying individual risk factors and guiding injury prevention strategies. Full article
(This article belongs to the Special Issue Understanding Sports-Related Health Issues, 2nd Edition)
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17 pages, 1599 KB  
Article
Trends in Antidepressant, Anxiolytic, and Cannabinoid Use Among Italian Elite Athletes (2011–2023): A Longitudinal Anti-Doping Analysis
by Mario Ruggiero, Leopoldo Ferrante, Domenico Tafuri, Rosaria Meccariello and Filomena Mazzeo
Sports 2025, 13(7), 233; https://doi.org/10.3390/sports13070233 - 16 Jul 2025
Cited by 1 | Viewed by 653
Abstract
Mental health disorders, particularly depression and anxiety, have become increasingly prevalent among elite athletes, exacerbated by factors such as competitive pressure and the Coronavirus Disease 19 (COVID-19) pandemic. This study analyzes trends in the use of antidepressants, anxiolytics, and cannabinoids (delta-9-tetrahydrocannabinol (THC)/cannabidiol (CBD)) [...] Read more.
Mental health disorders, particularly depression and anxiety, have become increasingly prevalent among elite athletes, exacerbated by factors such as competitive pressure and the Coronavirus Disease 19 (COVID-19) pandemic. This study analyzes trends in the use of antidepressants, anxiolytics, and cannabinoids (delta-9-tetrahydrocannabinol (THC)/cannabidiol (CBD)) among Italian athletes from 2011 to the first half of 2023 (FH2023), referring to anti-doping reports published by the Italian Ministry of Health. Data from 13,079 athletes were examined, with a focus on non-prohibited medications, banned substances, and regulatory impacts, including threshold adjustments for THC since 2013 and the legalization of CBD. The results show fluctuating use of antidepressants/anxiolytics, with peaks in 2021 and the FH2023, coinciding with post-pandemic awareness. Positive THC cases rose following regulatory changes, reflecting socio-cultural trends. Gender disparities emerged, with THC use predominantly among males (e.g., nine males vs. one female in 2013), though female athletes were underrepresented in testing. This study highlights the need for personalized, evidence-based strategies that balance therapeutic efficacy and anti-doping compliance. Clinicians should carefully consider prescribing selective serotonin reuptake inhibitors (SSRIs) and benzodiazepines to address depression and anxiety and should monitor the risks of CBD contamination. Future research should adopt longitudinal, gender-sensitive approaches to refining guidelines and combating stigma in professional sports. Full article
(This article belongs to the Topic Recent Advances in Physical Education and Sports)
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23 pages, 2960 KB  
Article
Submaximal Accentuated Eccentric Jump Training Improves Punching Performance and Countermovement Jump Force–Time Variables in Amateur Boxers
by Celso Sánchez-Ramírez, Izham Cid-Calfucura, Jordan Hernandez-Martinez, Jorge Cancino-López, Esteban Aedo-Muñoz, Pablo Valdés-Badilla, Emerson Franchini, José Manuel García-García, Bibiana Calvo-Rico, Javier Abián-Vicén and Tomás Herrera-Valenzuela
Appl. Sci. 2025, 15(14), 7873; https://doi.org/10.3390/app15147873 - 14 Jul 2025
Viewed by 546
Abstract
Objective: This study aimed to identify the effects of a submaximal jump training program using accentuated eccentric loading (AEL) on punching performance and countermovement jump (CMJ) force–time characteristics in amateur boxers. Methods: Twenty-nine amateur boxers (age: 24.9 ± 5.4 years; height of 175.9 [...] Read more.
Objective: This study aimed to identify the effects of a submaximal jump training program using accentuated eccentric loading (AEL) on punching performance and countermovement jump (CMJ) force–time characteristics in amateur boxers. Methods: Twenty-nine amateur boxers (age: 24.9 ± 5.4 years; height of 175.9 ± 5.2 cm; body mass: 76.2 ± 10.5 kg) were randomly assigned to three groups: AEL group (n = 9), CMJ group (n = 10), and control group (n = 10). The AEL group performed countermovement jumps using handheld dumbbells equivalent to 10–20% of body mass, followed by unloaded concentric phases. All participants were evaluated pre- and post-intervention on punching peak force and countermovement jump performance. Results: Significant differences were found in favor of the AEL group for the peak force of the jab punch (pre: 1050 ± 203; post: 1158 ± 189 N), straight punch (pre: 1685 ± 393; post: 1861 ± 429 N), right cross punch (pre: 2005 ± 362; post: 2150 ± 417 N), and left cross punch (pre: 1836 ± 312; post: 1977 ± 393 N), along with greater gains in jump height, propulsive impulse, and absolute and relative peak power than the CMJ and control groups. Conclusions: A submaximal accentuated eccentric jump training program enhances punching peak force and lower-limb power output in amateur boxers, offering a practical strategy for improving power-oriented performance during preparatory training phases. Full article
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14 pages, 571 KB  
Article
Understanding Sleep Health in Judo Referees: The Influence of Demographic and Athletic Factors
by Semih Karaman, Melike Keskinoglu and Jožef Šimenko
Appl. Sci. 2025, 15(13), 7452; https://doi.org/10.3390/app15137452 - 2 Jul 2025
Viewed by 505
Abstract
Sleep is critical for cognitive and psychomotor performance in demanding decision-making contexts such as sports officiating. Given the lack of research in the field, the cognitive complexity, and the high-pressure environment of judo refereeing, this study aimed to evaluate the sleep quality of [...] Read more.
Sleep is critical for cognitive and psychomotor performance in demanding decision-making contexts such as sports officiating. Given the lack of research in the field, the cognitive complexity, and the high-pressure environment of judo refereeing, this study aimed to evaluate the sleep quality of active judo referees and examine differences based on gender, age, refereeing experience, and athletic background. This cross-sectional study included 73 active Turkish judo referees (42 male, 31 female; age = 29.8 ± 11.0 years). Participants completed the Pittsburgh Sleep Quality Index (PSQI), and data were analysed using t-tests, ANOVA, correlation, regression, and mediation analyses. Data showed a mean sleep time of 7:43 + 1:27 and a total PSQI score of 7.21 + 3.53, and participants had been referees for a mean of 6.58 + 8.12 years. The overall sleep quality was suboptimal, with female referees reporting significantly poorer sleep than males. No significant differences in PSQI scores were found across referee seniority levels or educational levels. Correlation analysis showed significant negative associations between PSQI scores and both age and refereeing experience. The final hierarchical regression model with the age, gender, and athletic background significantly predicted PSQI scores. Mediation analysis further revealed that referee qualification level indirectly influenced sleep quality through age. The study is the first one in this area of judo referring, and it highlights poor sleep quality among judo referees, regardless of experience or qualification level, with gender, age, and athletic background emerging as key predictors. The lack of sleep education in both athletic and refereeing careers suggests a need for targeted interventions, especially for younger and female referees, to improve performance and prevent health issues. Further research is needed to explore these relationships over time and in elite-level referees. Full article
(This article belongs to the Special Issue Applied Sports Performance Analysis)
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13 pages, 718 KB  
Article
Effects of Cold-Water Immersion on Muscle Damage Markers, Physical Performance, and Skin Temperature of Kung Fu Athletes
by Gilvandro Oliveira Barros, Felipe J. Aidar, Raphael Fabricio de Souza, Ciro José Brito, Renato Méndez-delCanto, Jymmys Lopes dos Santos, Paulo Francisco Almeida-Neto, Breno Guilherme de Araújo Tinoco Cabral, Nuno Domingos Garrido, Victor Machado Reis, Rolland van den Tillaar and Pantelis T. Nikolaidis
Physiologia 2025, 5(3), 21; https://doi.org/10.3390/physiologia5030021 - 2 Jul 2025
Viewed by 1411
Abstract
Objective: This study aimed to evaluate the effects of cold-water immersion (CWI) on post-training recovery in Kung Fu athletes. Methods: In a 3-week crossover design, 16 Kung Fu athletes (22.00 ± 5.95 years, 76.90 ± 9.74 kg) were divided into two [...] Read more.
Objective: This study aimed to evaluate the effects of cold-water immersion (CWI) on post-training recovery in Kung Fu athletes. Methods: In a 3-week crossover design, 16 Kung Fu athletes (22.00 ± 5.95 years, 76.90 ± 9.74 kg) were divided into two conditions: CWI and passive recovery as a control (CON) measure. Through the study, muscle damage markers (creatine kinase [CK], lactate dehydrogenase [LDH], aspartate aminotransferase [AST] and alanine aminotransferase [ALT]), physical performance tests (upper limbs power, SJ and CMJ), skin temperature (from lower and upper limbs), and skin temperature asymmetries were measured. Results: CWI resulted in a higher reduction of CK concentration than CON 24 h after the intervention (−21.32%; p < 0.001). The SJ height 24 h after the intervention was higher in the CWI than in the CON (p < 0.001). Both CWI and CON resulted in skin temperature returning to baseline levels 24 h after intervention. Conclusions: CWI was effective in restoring muscle power, reducing muscle damage and reducing body temperature (BT) in Kung Fu athletes. Cold water recovery showed better muscle power and strength 24 and 48 h after training when compared to the passive method. CK and skin temperature were better 24 h after cold water recovery. Full article
(This article belongs to the Special Issue Exercise Physiology and Biochemistry: 2nd Edition)
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18 pages, 1261 KB  
Article
Effects of Different Interventions Using Taekwondo, Boxing, and Elastic Band Training on Body Composition and Physical Function in Chilean Older Women: A Randomized Controlled Trial
by Edgar Vásquez-Carrasco, Jordan Hernandez-Martinez, Izham Cid-Calfucura, Eduardo Guzmán-Muñoz, Camila Ruiz, Camila Baeza, María José Márquez, Tomás Herrera-Valenzuela, Braulio Henrique Magnani Branco, Eduardo Carmine-Peña, Paulina Sepúlveda, Cristian Sandoval and Pablo Valdés-Badilla
Life 2025, 15(7), 1049; https://doi.org/10.3390/life15071049 - 30 Jun 2025
Viewed by 780
Abstract
Background: Interventions involving Olympic combat sports, such as Taekwondo (TKD) and Boxing (BOX), represent innovative approaches for promoting health in older people. Elastic bands training (EBT), by contrast, is a safe and cost-effective method that has demonstrated positive effects on functional physical [...] Read more.
Background: Interventions involving Olympic combat sports, such as Taekwondo (TKD) and Boxing (BOX), represent innovative approaches for promoting health in older people. Elastic bands training (EBT), by contrast, is a safe and cost-effective method that has demonstrated positive effects on functional physical parameters in this population. This study aimed to compare the effects of TKD and BOX interventions, relative to EBT, on body composition and physical function in Chilean older women. Methods: This randomized controlled trial comprised three parallel groups: TKD (n = 10), BOX (n = 10), and EBT (n = 10). Participants in each group underwent pre- and post-intervention assessments following two 60 min sessions per week over an eight-week period. Results: Multiple comparisons revealed significant advantages for EBT over TKD and BOX in maximal isometric handgrip strength for both the dominant (p < 0.001; d = 0.967, large effect) and non-dominant (p < 0.001; d = 0.641, moderate effect) hands. Conversely, significant improvements in Timed Up-and-Go performance were observed in the TKD and BOX groups compared to EBT (p < 0.001; d = 2.071, large effect). All groups showed significant within-group improvements in the 30 s chair stand test (p < 0.001; d = 0.095, large effect). No significant changes were found in body fat percentage, fat-free mass, back scratch test, sit-and-reach test, or 2 min step test across groups. Conclusions: Although no substantial differences were observed between groups for most variables, TKD and BOX interventions significantly reduced Timed Up-and-Go times, whereas EBT enhanced maximal isometric handgrip strength in both hands. These findings highlight the distinct functional benefits of each intervention modality for older Chilean women. Full article
(This article belongs to the Special Issue Advances and Applications of Sport Physiology: 2nd Edition)
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16 pages, 622 KB  
Article
Relationship Between Intermuscular Synchronization of Upper Leg Muscles and Training Level in Karate Kumite Practitioners
by Velimir Jeknić, Milivoj Dopsaj and Nenad Koropanovski
J. Funct. Morphol. Kinesiol. 2025, 10(3), 234; https://doi.org/10.3390/jfmk10030234 - 20 Jun 2025
Viewed by 432
Abstract
Objectives: This study aimed to compare the involuntary stimulated neuromuscular response of thigh muscles in karate subgroups and non-athletes. We investigated whether karate training creates neuromuscular adaptations and if the synchronization of knee flexor and extensor muscles in karate practitioners is level-dependent. [...] Read more.
Objectives: This study aimed to compare the involuntary stimulated neuromuscular response of thigh muscles in karate subgroups and non-athletes. We investigated whether karate training creates neuromuscular adaptations and if the synchronization of knee flexor and extensor muscles in karate practitioners is level-dependent. Methods: The study included 7 elite karate athletes (KE), 14 sub-elite karate athletes (KSE), 16 individuals with basic karate training (KB), and 14 non–athletes (NA). Tensiomyographic (TMG) measurements were obtained from the rectus femoris, vastus medialis, vastus lateralis, biceps femoris, and semitendinosus muscles. Indexes of Intermuscular Synchronization (IIS) were calculated for contraction time (Tc), total contraction time (TcT), and rate of muscle tension development (RMTD) as variables for the observed muscles of a given muscle group (extensors of the dominant leg, flexors of the dominant leg, extensors of the non-dominant leg, and flexors of the non-dominant leg). Results: Statistically significant differences were observed in the intermuscular synchronization indexes between karate experience levels and non-athletes. Compared to non-athletes, elite (KE), sub-elite (KSE), and beginner karateka (KB) all demonstrated shorter contraction time indexes in dominant knee extensors (p = 0.042, 0.040, and 0.013, respectively). In the non-dominant flexors, KE exhibited significantly better synchronization than KSE (p = 0.001), KB (p = 0.033), and NA (p = 0.002). For the total contraction time index, both KSE and KB outperformed NA in dominant extensors (p = 0.023 and p = 0.008), while KE showed superiority in non-dominant extensors and flexors compared to all other groups (p-values ranging from 0.002 to 0.038). Significant RMTD differences were found in the dominant leg between KE and KSE (p = 0.036) and KE and KB (p = 0.001), as well as in the non-dominant leg between KE and KB (p = 0.011) and KE and NA (p = 0.025). These findings were accompanied by statistical powers exceeding 0.80 in most cases, underscoring the robustness of the observed differences. Conclusions: These findings highlight that muscle coordination patterns, as revealed through non-invasive TMG-based indexes, are sensitive to training level and laterality in karate practitioners. Importantly, elite athletes demonstrated more synchronized activation in key muscle groups, suggesting a neuromuscular adaptation specific to high-level combat sports. From a biomechanical perspective, improved intermuscular synchronization may reflect optimized neural strategies for stability, speed, and efficiency—key components in competitive karate. Thus, this method holds promise not only for performance diagnostics but also for refining individualized training strategies in combat sports and broader athletic contexts. Full article
(This article belongs to the Special Issue Innovative Approaches in Monitoring Individual Sports)
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17 pages, 237 KB  
Article
Time–Motion Analysis of the 2023 Women’s World Boxing Championships Finals
by Francesca Martusciello, Andrea Perazzetti, Arben Kaçurri, Marco Consolati and Antonio Tessitore
Sports 2025, 13(6), 187; https://doi.org/10.3390/sports13060187 - 17 Jun 2025
Viewed by 1162
Abstract
Background: This study investigated boxers’ activity profiles during the final matches (3 × 3 min format) of the IBA 2023 Women’s World Boxing Championships. Methods: Footage of the 12 finals was used to analyse the frequency and duration of fighting (F), punching (P), [...] Read more.
Background: This study investigated boxers’ activity profiles during the final matches (3 × 3 min format) of the IBA 2023 Women’s World Boxing Championships. Methods: Footage of the 12 finals was used to analyse the frequency and duration of fighting (F), punching (P), clinching (C), no-fighting (NF), and arbitral interruption (AI) phases. The analysis was conducted both for weight categories and divisions (lightweight (LWC): 48, 50, 52, 54, 57, and 60 kg; middleweight (MWC): 63, 66, 70, and 75 kg; heavyweight (HWC): 81 and 81+ kg). Results: Pooled data per round revealed significant differences for P (<0.001), C (p = 0.002), NF (p < 0.001), and AI (p < 0.001) phases, as well for P mean duration across rounds (p < 0.001). The MWC division showed significantly shorter F duration compared with the LWC (p = 0.007) and MWC divisions (<0.001). The F/NF total time ratio showed a prevalence of F in the 48, 50, 63, and 81+ kg categories, while NF prevailed in the 54, 57, 60, and 75 kg categories. Conclusions: While HWC primarily relied on C actions, the 54, 57, 60, and 75 kg categories showed higher NF frequency. This fact explains a different strategic match management approach with deliberate rhythm, controlled pauses, and opponent analysis, which coaches should consider for enhancing athletes’ performance by considering weight categories. Full article
(This article belongs to the Special Issue Women's Special Issue Series: Sports)
29 pages, 560 KB  
Review
Application of Electroencephalography (EEG) in Combat Sports—Review of Findings, Perspectives, and Limitations
by James Chmiel and Jarosław Nadobnik
J. Clin. Med. 2025, 14(12), 4113; https://doi.org/10.3390/jcm14124113 - 10 Jun 2025
Viewed by 1152
Abstract
Introduction: Combat sport athletes are exposed to repetitive head impacts yet also develop distinct performance-related brain adaptations. Electroencephalography (EEG) provides millisecond-level insight into both processes; however, findings are dispersed across decades of heterogeneous studies. This mechanistic review consolidates and interprets EEG evidence to [...] Read more.
Introduction: Combat sport athletes are exposed to repetitive head impacts yet also develop distinct performance-related brain adaptations. Electroencephalography (EEG) provides millisecond-level insight into both processes; however, findings are dispersed across decades of heterogeneous studies. This mechanistic review consolidates and interprets EEG evidence to elucidate how participation in combat sports shapes brain function and to identify research gaps that impede clinical translation. Methods: A structured search was conducted in March 2025 across PubMed/MEDLINE, Scopus, Cochrane Library, ResearchGate, Google Scholar, and related databases for English-language clinical studies published between January 1980 and March 2025. Eligible studies recorded raw resting or task-related EEG in athletes engaged in boxing, wrestling, judo, karate, taekwondo, kickboxing, or mixed martial arts. Titles, abstracts, and full texts were independently screened by two reviewers. Twenty-three studies, encompassing approximately 650 combat sport athletes and 430 controls, met the inclusion criteria and were included in the qualitative synthesis. Results: Early visual EEG and perfusion studies linked prolonged competitive exposure in professional boxers to focal hypoperfusion and low-frequency slowing. More recent quantitative studies refined these findings: across boxing, wrestling, and kickboxing cohorts, chronic participation was associated with reduced alpha and theta power, excess slow-wave activity, and disrupted small-world network topology—alterations that often preceded cognitive or structural impairments. In contrast, elite athletes in karate, fencing, and kickboxing consistently demonstrated neural efficiency patterns, including elevated resting alpha power, reduced task-related event-related desynchronization (ERD), and streamlined cortico-muscular coupling during cognitive and motor tasks. Acute bouts elicited transient increases in frontal–occipital delta and high beta power proportional to head impact count and cortisol elevation, while brief judo chokes triggered short-lived slow-wave bursts without lasting dysfunction. Methodological heterogeneity—including variations in channel count (1 to 64), reference schemes, and frequency band definitions—limited cross-study comparability. Conclusions: EEG effectively captures both the adverse effects of repetitive head trauma and the cortical adaptations associated with high-level combat sport training, underscoring its potential as a rapid, portable tool for brain monitoring. Standardizing acquisition protocols, integrating EEG into longitudinal multimodal studies, and establishing sex- and age-specific normative data are essential for translating these insights into practical applications in concussion management, performance monitoring, and regulatory policy. Full article
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26 pages, 904 KB  
Article
Investigation of the Effects of Different Plyometric Training Protocols on Punching Force and Muscle Performance in Male Boxers
by Mehmet Söyler, Alper Cenk Gürkan, İdris Kayantaş, Serhat Aydın, Baykal Karataş, Meriç Eraslan, Musa Şahin, Hamza Küçük, Adela Badau and Dana Badau
Appl. Sci. 2025, 15(12), 6532; https://doi.org/10.3390/app15126532 - 10 Jun 2025
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Abstract
This study examines the effects of two plyometric training interventions over an eight-week preparatory period on straight punch impact force, cardiovascular fitness, and muscle strength in national-level boxers. Twenty male professional boxers participated voluntarily, with an average age of 22.64 ± 3.12 years [...] Read more.
This study examines the effects of two plyometric training interventions over an eight-week preparatory period on straight punch impact force, cardiovascular fitness, and muscle strength in national-level boxers. Twenty male professional boxers participated voluntarily, with an average age of 22.64 ± 3.12 years and an average training experience of 5.11 ± 0.88 years. Their mean body weight and height were 70.20 ± 10.13 kg and 184.28 ± 5.38 cm, respectively. The participants were randomly assigned to two groups. Group 1, the Plyometric Stair Jump group, consisted of ten male boxers, while Group 2, the Plyometric Reaction Box Jump group, also included ten male boxers. To assess maximum punching velocity (PVmax), an accelerometer was embedded within the boxing glove, capturing data during three maximal-speed jabs with each arm to evaluate both rear-arm (RA) and lead-arm (LA) punches. Upper-body strength was assessed using a one-repetition maximum (1RM) bench press (BP) test, while maximum velocity at various percentages of 1RM was recorded via a linear encoder. Significant correlations were observed between the right arm punch velocity maximum (RA PVmax) and the bench press velocity at all submaximal intensities in both intervention groups (p < 0.05). However, no correlation was found between left arm punch velocity maximum (LA PVmax) and bench press velocity at any intensity within the Plyometric Reaction Jump (PRJ) group. Conversely, in the Plyometric Stair Jump (PSJ) group, a velocity at 80% of 1RM was the sole significant predictor of RA PVmax at submaximal bench press intensities. Adjusting for the strength-to-weight ratio significantly influenced the predictive values in intergroup comparisons (p < 0.005). These findings suggest that high-load bench press exercises (e.g., at 80% 1RM) may serve as reliable predictors of performance in specific boxing movements. However, since no significant relationship was observed with LA PVmax in this study, further research is warranted to identify exercises and intensities that may explain left arm punch velocity. Full article
(This article belongs to the Section Applied Biosciences and Bioengineering)
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18 pages, 2777 KB  
Article
Sports Massage and Blood Flow Restriction Combined with Cold Therapy Accelerate Muscle Recovery After Fatigue in Mixed Martial Arts Athletes: A Randomized Controlled Trial
by Robert Trybulski, Robert Roczniok, Gracjan Olaniszyn, Yaroslav Svyshch, Andryi Vovkanych and Michał Wilk
J. Funct. Morphol. Kinesiol. 2025, 10(2), 194; https://doi.org/10.3390/jfmk10020194 - 28 May 2025
Viewed by 2190
Abstract
Objectives: The purpose of this study is to quantitatively evaluate the combined effects of sports massage, blood flow restriction (BFR), and cold therapy on quadriceps recovery in mixed martial arts (MMA) athletes following eccentric exercise, focusing on muscle biomechanical properties, pain, and strength. [...] Read more.
Objectives: The purpose of this study is to quantitatively evaluate the combined effects of sports massage, blood flow restriction (BFR), and cold therapy on quadriceps recovery in mixed martial arts (MMA) athletes following eccentric exercise, focusing on muscle biomechanical properties, pain, and strength. Methods: This randomized, single-blind clinical trial involved 36 men and women MMA-trained participants, divided into three groups: massage (n = 12) received massage, BFR/cool (n = 12) received combined BFR and cooling, and control (n = 12) received passive rest as a control. The fatigue protocol involved MMA fighters performing five sets of plyometric jumps on a 50 cm box until exhaustion, with 1-min breaks between sets. After that, the massage group received a 20-min massage overall using standardized techniques; BFR/cool underwent a 20-min alternating blood flow restriction (200 mmHg) and cooling treatment with ice bags on the quadriceps; and the final group served as the control group with passive rest and no intervention. Participants were assessed four times—before exercise, immediately after exercise, 24 h post-exercise (after two recovery sessions), and 48 h post-exercise (after four recovery sessions)—for perfusion unit (PU), muscle elasticity, pressure pain threshold (PPT), reactive strength index (RSI), and total quality recovery (TQR). Results: The statistical analysis revealed significant effects of both massage and BFR/cooling interventions across key recovery outcomes, with large effect sizes for time-related changes in RSI (p < 0.0001; η2 = 0.87), elasticity (p < 0.0001; η2 = 0.84), and PPT (p < 0.0001; η2 = 0.66). Notably, post-exercise 48 h values for RSI, elasticity, PU, and TQR were significantly improved in both the massage and BFR/cool groups compared to control (p < 0.05)), while no significant group differences were observed for PPT. Conclusions: The study concludes that both massage and combined blood flow restriction with cooling interventions significantly enhance post-exercise recovery—improving muscle perfusion, elasticity, reactive strength, and perceived recovery—compared to passive rest. Full article
(This article belongs to the Special Issue Perspectives and Challenges in Sports Medicine for Combat Sports)
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