Sports Injuries Research Articles

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The main cause of injury in athletes is of muscular origin and of all those of the hamstrings it is the most important. The inadequate eccentric strength of these is a factor that is related to lower limb injuries. At the Sports Science Center of the Ministry of Sports, the eccentric strength of the hamstrings is evaluated with the Nordic test. In Colombia, it is not known if this is related to lower limb injuries in the different world-class high-performance athletes who attend there. A descriptive work was proposed with a quantitative approach and analytical phase, evaluating the pre-participation medical records of 195 athletes who underwent the Nordic test during the year 2021. The athletes analyzed were 56% men, with ages for both sexes on average of 21.5 years, with body mass indexes of approximately 22.1 k/m2. The most frequent injury to the lower limbs was muscle (38.5%), followed by tendinopathies (27%). Of the muscle, the hamstrings were injured in 69%. An average maximum force was found for all athletes of 292.4 ± 67.06 N and a relative force of 4.52 ± 1 N/kg. The bivariate analyzes show an association between the presence of injury and lower maximum eccentric hamstring strength for both sexes. Furthermore, it was found that asymmetries less than 15% of the maximum eccentric hamstring strength were associated with a lower presence of injury. From a multivariate analysis, normative reference curves were constructed for weight, sex, and maximum eccentric strength of these athletes. It contributes to the conceptual gap of the behavior of eccentric hamstring strength and its relationship with the presence of lower limb injuries in different Colombian elite athletes.

ENGLISH

Currently, the studies that have been carried out on sports injuries are mostly focused on physical factors as the main cause; however, empirical evidence shows the importance of psychological factors. Therefore, we must focus on identifying the most relevant variables surrounding sports injuries, that is, those that can influence their appearance and/or rehabilitation. Mental health disorders have become one of the most relevant problems today, and with it, the risk of suffering an injury is increasing. The objective of the present study is to carry out a systematic review of the scientific literature to know which mental health indicators are the most common in relation to sports injuries in elite athletes. A systematic review of the scientific literature will be carried out in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. For this purpose, various databases have been used, such as: Scopus, Scielo, ResearchGate, MedlinePlus, Dialnet and Google Scholar. The selected documents were 6, all of them review articles published between 2016 and 2022. The results indicate that: there is a relationship between mental health and sports injuries; the prevalence of mental health symptoms in sport increases the risk of injury and delays rehabilitation; the number of injuries negatively affects the athlete’s mental health; Injuries can increase the risk of mental health problems and adverse behaviors. In conclusion, this review shows how mental health indicators are significantly related to sports injuries, and how their relationship can lead to incorrect recovery for the athlete and/or being more exposed to suffering from it.

Imaging of sports injuries in adolescents.

Musculoskeletal injuries in adolescents tend to occur in particular locations and have distinct characteristics, as they affect an immature skeleton. Increased engagement in sports, extended training and competition periods, and early specialization in specific sports, among other factors, have contributed significantly to the rise in musculoskeletal sports injuries in adolescents. Furthermore, females show a particularly pronounced increase in sports participation, where anatomical and hormonal factors play crucial roles in the development and increased frequency of sports-related injuries. Consequently, there is a growing demand for diagnostic imaging techniques. Musculoskeletal and pediatric radiologists require a comprehensive understanding of intrinsic and extrinsic risk factors and the successive stages of skeletal development that can influence the specific characteristics of sports injuries in adolescents. These aspects are crucial for the diagnostic, prognostic, and therapeutic management of these injuries and for mitigating chronic conditions that could compromise future sports participation. This review analyzes the primary musculoskeletal injuries in adolescent athletes and highlights the pivotal role of different imaging methods in their diagnosis and management.

Prevalence, and types of overuse injuries in gym centers: A cross-sectional study in Saudi Arabia.

Physical activity has numerous health benefits, enhancing overall wellbeing. However, it can also lead to injuries, impeding exercise capacity and hindering work. Limited knowledge exists about the prevalence of overuse gym injuries and whether they vary across different gym activities. This study aims to estimate sport injuries at fitness centers in Saudi Arabia, comparing injuries between various activities and session durations. This is a cross-sectional, questionnaire-based study surveyed regular gym-goers in Saudi Arabia with overuse injuries. The online survey, distributed through social media apps, collected data using a validated Google form questionnaire. Questioanire consists of 3 parts. First part of the questionnaire included demographic characteristics of participants. Second part contains characteristics related to gym as gym session's duration, frequency of attending gym per week, sport types, type of injuries and site of injuries. Third part contains Oslo Sports Trauma Research Centre (OSTRC) Overuse injury questionnaire that included 4 questions about difficulties in participation, reduction of training, affection of performance and symptoms. Study included 1012 participants, majority male (76.2%), with age range of 18 to 50 years, and significant proportion falling between 26 and 30 years (52.6%). Majority of participants were from Central Province (42.9%). Gym sessions typically lasted 1 to 2 hours (68.3%), and most common attendance frequency was 4 days/week (39.6%). Common injury sites were shoulder (25.2%), knee (20.2%), and lower back (17.7%). Bodybuilding (50.6%), running (45.8%), and weightlifting/powerlifting (45.1%) were predominant sports. Strain/muscle rupture/tear (35.70%) and muscle cramps/spasm (19.3%) were commonest injury types. Longer gym sessions (>2 hours) were associated with higher prevalence of strain/muscle rupture/tear, dislocation, and subluxation (P < .001). Shorter sessions (<1 hour) had higher prevalence of muscle cramps/spasm and contusion/hematoma/bruise (P < .001). Gym sessions lasting 1 to 2 hours had high prevalence in tendinosis/tendinopathy. Strain/muscle rupture/tear was significantly higher in bodybuilding, weightlifting/powerlifting, swimming, cycling, and running. Tendinosis/tendinopathy was higher in crossfit. (OSTRC) Overuse injury questionnaire revealed decreased participation, training volume, performance, and increased pain with longer gym sessions. In conclusion, gym-related injuries are common, with bodybuilding and running being prevalent activities. Preventative measures should be taken, and individuals are advised to undergo a physical and medical examination before engaging in physical activity at fitness centers.

Human head-neck model and its application thresholds: a narrative review.

There had been many studies on human head-neck biomechanical models in the last two decades, and the associated modelling techniques were constantly evolving at the same time. Computational approaches had been widely leveraged, in parallel to conventional physical tests, to investigate biomechanics and injuries of the head-neck system in the fields like automotive industry, orthopaedic, sports medicine, etc. The purpose of this manuscript is to provide a global review of the existing knowledge related to the modelling approaches, structural and biomechanical characteristics, validation and application of the present head-neck models. This endeavor aims to support further enhancements and validations in modeling practices, particularly addressing the lack of data for model validation, as well as to prospect the future advances in terms of the topics. Seventy-four models subject to the proposed selection criteria are considered. Based on previously established and validated head-neck computational models, most of the studies performed in-depth investigations of included cases, which revolved around four specific subjects: physio-pathology, treatment evaluation, collision condition, and sports injury. Through the review of the recent 20 years research, the summarized modeling information indicated existing deficiencies and future research topics, as well as provided references for subsequent head-neck model development and application.

Effect of aquatic versus conventional physical therapy program on ankle sprain grade III in elite athletes: randomized controlled trial

IntroductionAnkle sprains are the second most common sports injury after knee injuries, with about 85% of them affecting the lateral ankle ligaments. These injuries are particularly prevalent in sports like basketball and volleyball.PurposeTo investigate the effect of Aquatic therapy as an early rehabilitation protocol for elite athletes with acute lateral ankle sprain grade III on back-to-sport time, dynamic balance, pain, Athletic performance, and muscle power compared to land-based exercise training.MethodsThirty elite athletes have ankle sprain grade III with sprain onset from 1 to 7 days, their age ranges from 18–30 years old were recruited. All participants are professional athletes; mainly participating in above-head sports such as volleyball and basketball. The patients were randomly allocated into two treatment groups: Group I (control group): 15 patients received a conventional physical therapy program of structured therapeutic exercise program, manual therapy and land-based exercises, in addition to external support, and Group II (Aquatic therapy group): 15 patients received aquatic training. Visual Analog Scale (VAS) was used to measure the pain intensity, while the dynamic balance was measured by the Star Excursion Balance Test. Athletic performance was measured by HOP Tests (Single, Triple, 6-m, and Cross-over hops) aided by the Agility T-Test (ATT) and Illinois Agility Test (IAT). Muscle power was tested by a Single Leg Press. Finally, back to sports time was recorded for each participant in both groups.ResultsThere was a significant interaction effect of Aquatic therapy and time for VAS (p < 0.001), single hop (p < 0.001), triple hop (p < 0.001), cross-over hop (p < 0.001), IAT (p = 0.019) and ATT (p < 0.001) of both affected and nonaffected. There was no significant interaction effect of Aquatic therapy and time for 6-MHT of affected (p = 0.923), and nonaffected (p = 0.140). There was a significant main effect of time for all dependent variables (p < 0.001) except for 6-MHT of affected (p = 0.939), nonaffected (p = 0.109), and IAT (p = 0.099). The Star excursion dynamic balance test (SEBT) and Single leg press revealed a significant difference between groups on affected and non-affected sides (p < 0.001*). Lastly and most importantly the back-to-sport time revealed a significant difference in the return-to-sport time in favor of the Aquatic therapy group who returned faster than the control group (p < 0.001*).ConclusionAquatic therapy is more effective than traditional protocols regarding early rehabilitation of acute ankle sprain grade III in Elite professional athletes for reducing pain intensity, improving dynamic balance and athletic performance and power and accelerating their return to sports time. Because aquatic therapy produces better outcomes, it is advised to be included in the rehabilitation programs of athletic patients with acute ankle sprains grade III.

Structure and function of the foot in the context of Achilles tendon rupture – cause-effect analysis

Introduction and objective: Achilles tendon rupture is the most common sports injury. The aim of the study was to analyse the cause-effect correlation between the occurrence of foot dysfunction and Achilles tendon rupture in male athletes. Materials and methods: The study included 41 men who were treated for Achilles tendon rupture, and a control group of 40 men who met the same criteria, but had no history of Achilles tendon rupture. Each participant underwent the following examinations: orthopaedic examination, plain standing foot radiographs, and foot examination on the gait platform. The final stage was an experimental study in the field of biomechanics of the musculoskeletal system of the lower limbs, with an assessment of forces arising in the Achilles tendon and statistical analyses of all obtained results. Results: Plain foot radiographs and examination on the gait platform showed that the feet in the study group had significantly more abnormalities compared to the control group. Planovalgus foot deformity was far more frequent in the study group on plain radiographs. The forefoot was overloaded much more often in the study group, and the foot was placed in excessive abduction, which is characteristic of planovalgus foot. The experimental study shows that the force in the Achilles tendon increases with increasing load on the forefoot. Conclusions: Planovalgus foot deformity in male athletes with a history of ruptured Achilles tendon is the most common foot pathology, significantly increasing the forces transmitted by the Achilles tendon.

MASS-12: Evidence-based Martial Arts Striking Sports Injury Prevention Programme

Despite a focus on contact injuries in martial arts, many injuries are non-contact, from ligament tears to ankle sprains, and could be prevented with appropriate prehabilitation. With an emphasis on tradition, recreational martial arts clubs have not yet widely adopted modern prehabilitation exercises. We reviewed the literature to identify injury prevalence and mechanism in martial arts striking sports (MASS). Given the lack of data on female martial artists, we also reviewed common injuries in female athletes. We then identified sport-specific evidence-based interventions using a combination of literature review and Physiotec and filtered this through the constraints of recreational MASS environments to develop a cohesive, useable prehabilitation programme. We propose a programme of 12 exercises for injury prevention (MASS-12). We emphasise the importance of biomechanical retraining to prevent common injuries in martial arts. Hip-knee-ankle alignment is key to injury prevention in MASS, while improved injury surveillance is needed for future intervention.

Anterior cruciate ligament injuries in elite badminton athletes: 84% Return to sport, half return to performance.

Badminton requires fast and pivoting movements, putting athletes at risk of sustaining an anterior cruciate ligament (ACL) injury. The primary purpose is to investigate the return to sport (RTS) and the return to performance (RTP) after an ACL injury in elite badminton athletes. The secondary purpose is to describe ACL injury mechanisms in elite badminton players. Athletes within the top 200 of the Badminton World Federation World Ranking who sustained an ACL injury between January 2001 and December 2021 were retrospectively included. An anonymous online survey was created in eight languages. RTS, RTP and contributing factors were analysed among athletes aiming to RTP. The injury mechanism was analysed in all participants. Sixty-six athletes from 32 countries were included. Fifty-seven athletes (86.4%) aimed to RTP. Forty-eight out of 57 (84.2%) did RTS. Twenty-nine (50.9%) managed to successfully RTP. Forty-nine (74.2%) of ACL injuries occurred during a competition, 14 (21.2%) occured during training. Thirty-one (49.2%) occurred in the rear court backhand side and 47 (74.6%) occurred during landing after a jump. Forty-eight out of 57 (84.2%) athletes managed to RTS. Half of the athletes managed to successfully RTP. Most of the ACL injuries occurred during competition, in the rear court backhand sideand during landing after a jump. Level III.

Curcumin-activated Wnt5a pathway mediates Ca2+ channel opening to affect myoblast differentiation and skeletal muscle regeneration.

Skeletal muscle injury is one of the most common sports injuries; if not properly treated or not effective rehabilitation treatment after injury, it can be transformed into chronic cumulative injury. Curcumin, an herbal ingredient, has been found to promote skeletal muscle injury repair and regeneration. The Wnt5a pathway is related to the expression of myogenic regulatory factors, and Ca2+ promotes the differentiation and fusion process of myoblasts. This study explored the effect and mechanism of curcumin on myoblast differentiation during the repair and regeneration of injured skeletal muscle and its relationship with the Wnt5a pathway and Ca2+ channel. Myogenic differentiation of C2C12 cells was induced with 2% horse serum, and a mouse (male, 10weeks old) model of acute skeletal muscle injury was established using cardiotoxin (20μL). In addition, we constructed a Wnt5a knockdown C2C12 cell model and a Wnt5a knockout mouse model. Besides, curcumin was added to the cell culture solution (80mg/L) and fed to the mice (50mg/kg). Fluorescence microscopy was used to determine the concentration of Ca2+. Western blot and RT-qPCR were used to detect the protein and mRNA levels of Wnt5a, CaN, NFAT2, MyoD, Myf5, Pax7, and Myogenin. The expression levels of MyoD, Myf5, Myogenin, MHC, Desmin, and NFAT2 were detected using immunofluorescence techniques. In addition, MyoD expression was observed using immunohistochemistry, and morphological changes in mouse muscle tissue were observed using HE staining. During myoblast differentiation and muscle regeneration, Wnt5a expression was upregulated (P<0.001) and the Wnt5a signalling pathway was activated. Wnt5a overexpression promoted the expression of MyoD, Myf5, Myogenin, MHC, and Desmin (P<0.05), and conversely, knockdown of Wnt5a inhibited their expression (P<0.001). The Wnt5a pathway mediated the opening of Ca2+ channels, regulated the expression levels of CaN, NFAT2, MyoD, Myf5, Myogenin, MHC, and Desmin (P<0.01) and promoted the differentiation of C2C12 myoblasts and the repair and regeneration of injured skeletal muscle. The expression of Wnt5a, CaN, NFAT2, MyoD, Myogenin, Myf5, and MHC in C2C12 myoblast was significantly increased after curcumin intervention (P<0.05); however, their expression decreased significantly after knocking down Wnt5a on the basis of curcumin intervention (P<0.05). Similarly, in Wnt5a knockout mice, the promotion of muscle regeneration by curcumin was significantly attenuated. Curcumin can activate the Wnt5a signalling pathway and mediate the opening of Ca2+ channels to accelerate the myogenic differentiation of C2C12 cells and the repair and regeneration of injured skeletal muscle.

Oxidative stress induces ferroptosis in tendon stem cells by regulating mitophagy through cGAS-STING pathway

Tendinopathy is one of the most prevalent sports injury diseases in orthopedics. However, there is no effective treatment or medicine. Recently, the discovery of tendon stem cells (TSCs) provides a new perspective to find new therapeutic methods for Tendinopathy. Studies have shown that oxidative stress will inevitably cause TSCs injury during tendinopathy, but the mechanism has not been fully elucidated. Here, we report the oxidative damage of TSCs induced by H2O2 via ferroptosis, as well, treatment with H2O2 raised the proportion of mitochondria engulfed by autophagosomes in TSCs. The suppression of mitophagy by Mdivi-1 significantly attenuates the H2O2-induced ferroptosis in TSCs. Mechanically, H2O2 actives the cGAS-STING pathway, which can regulate the level of mitophagy. Interfering with cGAS could impair mitophagy and the classical ferroptotic events. In the rat model of tendinopathy, interference of cGAS could relieve tendon injury by inhibiting ferroptosis. Overall, these results provided novel implications to reveal the molecular mechanism of tendinopathy, by which pointed to cGAS as a potential therapeutic target for the treatment of tendinopathy.

MRI analysis of and factors related to knee injuries in amateur marathon runners.

Marathons are the most challenging form of running, and amateur athletes may be more prone to injury due to a lack of professional knowledge and instruction in running. To analyze the MRI manifestations of and factors related to knee injuries in amateur marathon runners. Data were collected from a hospital database of 105 qualified amateur marathon athletes (65 males,40 females), between May 2018 and December 2021. 1.5T MR: sagittal fs-PDWI, sagittal T1WI and sagittal 3D-DESS sequence. The MRI manifestations of knee joint injury were analyzed and evaluated by two radiologists. The inter-observer agreement on MRI readings was analyzed using the kappa coefficient, and binary logistic regression analysis was employed to identify factors associated with knee injuries. The overall prevalence of knee cartilage lesions, meniscus lesions and bone marrow edema among amateur marathon runners was 45.7%, 72.4%, and 49.5% respectively. Our analysis revealed that older age (OR = 1.135, P<0.001), higher BMI (OR = 1.236, P = 0.044), and slower pace (OR = 2.305, P = 0.017) were associated with increased risk of articular cartilage disease. Furthermore, older age (OR = 1.425, P<0.001) was identified as a risk factor for meniscal lesions, while older age (OR = 1.088, P = 0.002) was bone marrow edema. Notably, no significant correlation was observed between knee joint injuries of amateur marathon athletes and gender or the monthly running distance (P>0.05). The occurrence of knee injuries among amateur marathon athletes was highly prevalent, with the patellofemoral joint cartilage and posterior horn of medial meniscus being frequently affected areas. Moreover, age, BMI, running years and pace were significant risk factors of knee joint injury.

Examining the applied value of narratives for professional practice: An exploration of sports injury narratives in action

Heeding calls to expand the resources and approaches to psychologically support injured athletes, this study explored the applied value of socio-cultural sports injury narratives for athletes, coaches, and practitioners. Informed by narrative inquiry and pedagogy, six evidence based sports injury narratives were shared and discussed with 69 elite participants (i.e., athletes, coaches, and practitioners) across 11 focus group interviews. A reflexive thematic analysis identified five themes: (1) Forewarned is Forearmed, (2) Building Blocks to Constructing Meaning(s), (3) Fostering Interpersonal Connections, (4) A Common Language, and (5) Promoting Communal Responsibility. Overall, these themes advance empirical understandings of how narratives can inform professional practice by supporting injured athletes across personal (e.g., meaning making), social (e.g., enhancing interpersonal relationships), and cultural (e.g., promoting communal responsibility) levels.

Psychological Well-Being From Sports Injuries in Adolescence: A Narrative Review.

The objective of this paper is to review how the mental and psychological well-being of the adolescent athlete population may be impacted by sports injuries, specifically the development of their personal identities. To answer this question, we conducted a narrative review using keywords such as "adolescence," "psychological," "injury," and "sport" in the PubMed database. When conducting the research, we included sources from the past 15 years in order to gain a more present and accurate analysis of our question, and no countries were excluded from our population. Through our research, we identified risk factors that contribute to the rising psychological stress on adolescents. The return to sport was also found to be primarily affected by implied psychological illnesses such as self-confidence and identity, along with parental and coach guidance through the rehabilitation process. Despite the lack of research, scientists work to pursue additional psychological interventions to ensure the emotional well-being of adolescent athletes. Through this review, we aim to inform athletes, coaches, parents, and pediatricians about psychological issues that they may face as they continue to pursue their respective roles in sports. This study also paves a path for future research concerning potential interventions to prevent such psychological issues and ensure both physical and mental health for young athletes.

Publication trends on sports sociology: Global perspectives and emerging themes

This study examined the depiction of publication trends and the transformation of scholarly discourse within sports sociology publications. The investigation utilised the Scopus and WoS databases to compile a comprehensive list of sports sociology publications. Employing ScientoPy and VOSviewer, the study dynamically constructed science maps and visualisation networks. In the Scopus database, there were 516 publications, and in the WoS, 216, resulting in 732 publications, constituting 79.13% of the overall count between 1990 and 2022. Sports Sciences emerged as the predominant field with 119 publications, and the most prolific source title over the three decades was the International Review for the Sociology of Sport. The United States and Germany stood out as the top two countries, each contributing over 100 publications. The keyword “sports sociology” demonstrated close associations with “development,” “athlete,” and “physical education,” particularly evident since 2015. This study is poised to lay the groundwork for future endeavours to enrich and invigorate sports sociology research. It underscores the need for sports sociologists to delve into novel insights, including the interplay between sports sociology and mental health, gender disparities, sports injury management, and artificial intelligence. The intriguing social dimensions of physical education and sports training are underscored for their significance in shaping daily human activities, behaviours, and emotions.

A bibliometric analysis from 2013 to 2023 reveals research hotspots and trends in the connection between sport and regenerative medicine.

The field of regenerative medicine for sports injuries has grown significantly in the 21st century. This study attempted to provide an overview of the current state of research and key findings regarding the relationship between sport and regenerative medicine in general, identifying trends and hotspots in research topics. We gathered the literature from the Web of Science (WOS) database covering the last 10 years (2013-2023) pertaining to regenerative medicine for sporter and applied Citespace to assess the knowledge mapping. The findings demonstrated that there were 572, with a faster increase after 2018. The country, institution, and author with the most publications are the USA, Harvard University, and Maffulli Nicola. In addition, the most co-cited reference is J Acad Nutr Diet (2016) (199). Adipose tissue, high tibial osteotomy, and bone marrow are the hot spots in this field in the next few years.

Concussion and brain injuries in sport: conceptual, ethical and legal perspectives

ABSTRACT This special issue examines critical ethical, legal, and policy debates surrounding brain trauma in sport, focusing on challenges in concussion management practices and protocols. Brain injury concerns extend beyond traditional contact sports like boxing, encompassing sporting activities involving rapid acceleration, deceleration, and surface impacts, such as cycling and equestrian sports. Among such problems are the identification and management of brain injuries, the roles of officials and healthcare professionals, and the broader implications for sport integrity and athlete careers. The special issue is organized into four sections: ethics of concussion medicine, socio-legal aspects, sport ethical dimensions, and public health policies. Contributions discuss concussion management in youth sport, sport federations’ and athletes’ duties involvement in concussion-related research, strategies to support and enhance athlete autonomy, public health-informed brain injury frameworks, conflict of interest in concussion management protocols, litigation and liability in concussion research and collaboration, race and genomics in brain-injury scientific discourses, rule changes in sport to reduce head impact, the contextual nature of brain injury and athlete decision-making, the ethical use of genetic testing in brain-injury related research, marketing strategies to advertise tackle football to children and adolescents, and policy purposes and evidence underpinning concussion management practices. This comprehensive exploration offers diverse disciplinary insights, making it a crucial resource for sport humanities scholars, policymakers, and medical professionals. Keywords: brain injury, sport ethics, concussion, sport law, sport policy.

Innovative pressure sensing with amorphous silicon nanostructures: Exploring applications in sports training supervision

This study introduces an innovative approach to pressure sensing in sports training using amorphous silicon nanostructure-based sensors. These sensors demonstrated high sensitivity (0.75 Ω/kPa) and a broad pressure detection range (1–100 kPa), making them ideal for capturing the nuances of athletic movements. Their compact size (5 mm×5 mm) and superior durability (over 5000 cycles with minimal performance variation) allowed for seamless integration into athletic shoes and attire. The sensors effectively captured pressure patterns in running, such as heel strikes peaking at 300 kPa, and cycling, revealing a 200 kPa increase in the perineal region during posture shifts. Comparative analysis highlighted the advantages of amorphous silicon nanostructure sensors over existing technologies, including higher sensitivity, wider pressure range, smaller size, and better durability. The integration of these sensors provided invaluable data for optimizing training regimes and preventing injuries. The study also delved into the physical and chemical characterization of the nanostructures, confirming their uniform size distribution, surface morphology, and amorphous nature, which contributed to their exceptional sensing performance. The findings underscore the immense potential of amorphous silicon nanostructure sensors in revolutionizing athletic performance analysis and injury prevention, offering a significant upgrade over current technologies in terms of accuracy, adaptability, and user-friendliness. This research paves the way for more sophisticated, precise, and athlete-centric pressure sensing solutions, transforming the landscape of sports technology and biomechanical assessment.

The Influence of Medial and Lateral Forefoot Height Discrepancy on Lower Limb Biomechanical Characteristics during the Stance Phase of Running

Previous research has predominantly focused on the biomechanical effects of anterior–posterior foot motion during running, with comparatively less attention given to medial–lateral foot motion and its impact on lower limb biomechanical characteristics. We recruited 18 healthy runners who wore five different types of running shoes: regular shoes (NS), those with a 6 mm and 9 mm medial–lateral height difference in the forefoot (M6, M9), and those with a 6 mm and 9 mm lateral–medial height difference (L6, L9). Biomechanical parameters of lower limb joints during the stance phase of running, including range of motion, peak angular velocity, peak moment, power, and work, were analyzed. We used paired-sample t-tests and one-dimensional statistical parametric mapping (SPM1D) to compare joint biomechanics between shoes with varying height differences and NS. Under the L6 condition, notable differences occurred in the hip and knee flexion–extension moments during landing and push-off, accompanied by a significant increase in ankle dorsiflexion work and a significant decrease in inversion–eversion work. In contrast, the M9 condition resulted in decreased hip flexion–extension peak moment, power, and work in the sagittal plane. These findings indicate that varying forefoot medial–lateral height differences in running shoes significantly impact lower limb joint dynamics during the stance phase, particularly the L6 condition, potentially reducing knee injury risk and aiding gait improvement for overpronators. The findings offer valuable insights for sports injury prevention and athletic footwear design. However, further research is needed to understand the underlying mechanisms and practical implications for sports injury prevention and performance enhancement.

Analysis of Strength Training in the Training of Shot-Putters

The shot put is a sport that requires very high explosive power and precise technique. Strength training occupies the core position in the training of shot-putters, which can not only improve the throwing distance of athletes but also enhance their competitive state and prevent sports injuries. The purpose of this paper is to analyze the principles, classification, methods, and specific exercises of strength training in the training of shot-putters, in order to provide scientific training guidance for shot-putters.