Sports Research Articles

Unveiling a hide side of the athlete's heart: a CMR focus on the left atrium.

Abstract Background cardiac magnetic resonance (CMR) is the gold standard to evaluate cardiac chambers’ dimensions and function, but data on left atrium (LA) dimensions and function among elite athletes are lacking. Objective to describe LA size and function among a cohort of elite athletes and evaluate eventual differences based on sports discipline and gender. Methods We enrolled 120 Olympic athletes with un-remarkable cardiovascular pre-participation screening tests (mean age 25±5 years, 50% males, 25% skill, 25% power, 25% mixed, 25% endurance). All the athletes underwent CMR without contrast administration. LA dimensions, in terms of absolute and indexed area and volume, were computed using 4- and 2-chamber steady state precession cine-sequences. LA ejection fraction (LAEF) and LA coupling index (LACI index, as the ratio between LA and LV end-diastolic volumes) were calculated. Cine-images were also used to analyse atrial deformation with a dedicated offline software to measure LA global longitudinal strain. LA dimensions and function were compared between males and females and athletes of different sports categories based on European classification. Results Among the entire cohort, endurance athletes showed the greatest remodelling in terms of LA and LV dimensions (Table). There were no significant differences in LAEF and LV-EF between athletes of different sport categories (p=0.121 and p=0.679). A trend in increasing LA volumes and decreasing LA strain consistent with a growing cardiovascular demand was observed, but the only statistically significant difference was between skill athletes and all the other groups for LA volumes (p<0.001), while there were no significant differences in LA strain (p=0.170). LACI did not differ between athletes of different sports categories (p=0.170). Female athletes showed higher LAEF and LA strain than males (respectively 55±5 vs 52±6% p=0.012 and 35±7 vs 32±7%, p=0.009) while LACI did not differ based on gender (19±5% for both females and males, p=0.385). Conclusion Among our cohort of Olympics, LA remodelling was observed in all athletes, being less evident in skill group, as for the LV. Thus, the ratio between LA and LV did not differ between sport categories. LAEF and LA strain were not significantly different between athletes of different sports categories although LA strain was slightly lower in endurance. Female athletes showed higher LAEF and LA strain than males, while LACI was not different based on gender.

Structural echocardiographic parameters in male and female Asian athletes: a systematic review and meta-analysis

Abstract Introduction Following repetitive structured and intense physical training, elite athletes’ hearts undergo physiological cardiac remodelling, including increased left ventricular (LV) size and LV wall thickness. These changes may mimic those seen in pathological cardiac conditions such as dilated and hypertrophic cardiomyopathy, posing a challenge for accurate diagnosis. Reference ranges for common echocardiographic parameters in elite Caucasian and Black athletes have been reported, facilitating differentiation between physiological and pathological changes in these demographics. However, there remains a paucity of data for Asian athletes despite their increasing representation in global sport. Methods We searched MEDLINE via PubMed, Embase, and the Cochrane Database for relevant studies from inception till 20th November 2023. We included observational studies that reported relevant echocardiographic parameters in elite Asian athletes. Studies that did not report gender-specific cardiac imaging parameters were excluded. After study selection and data extraction, random-effects meta-analysis of means was performed to obtain the weighted mean and 95% confidence intervals (CI) of common echocardiographic parameters stratified by gender. Results Our final search yielded 10 studies comprising a total of 1,111 elite athletes (996 male, 115 female; 53% Japanese, 21% uncategorised, 14% South-East Asian). Athletes participating in skill and power disciplines were excluded from analysis post-hoc due to a paucity of data and extreme data ranges. In male athletes, mean LV wall thickness was 9.4 mm (95% CI 8.5-10.3, I2 = 98.9%), mean LV end diastolic diameter was 54.7 mm (95% CI 52.5-57.0, I2 = 98.6%), mean LV mass indexed to body surface area was 97.5 g/m2 (95% CI 90.5-104.5, I2 = 97.5%) and mean aortic root diameter was 31.9 mm (95% CI 29.2-34.7, I2 = 99.5%). In female athletes, mean LV wall thickness was 7.9 mm (95% CI 7.5-8.4, I2 = 85.4%), mean LV end diastolic diameter was 47.1 mm (95% CI 45.8-48.3, I2 = 77.3%), mean LV mass indexed to body surface area was 79.5 g/m2 (95% CI 69.2-89.7, I2 = 92.8%) and mean aortic root diameter was 27.5 mm (95% CI 26.9-28.1). Conclusion This meta-analysis describes commonly reported echocardiographic parameters in elite Asian athletes from endurance and mixed sport disciplines. The absolute values of all reported parameters appear to fall far below reported limits for non-Asian athletes, highlighting substantial ethnic and regional variation in cardiac remodelling in elite athletes. While our results facilitate preliminary referencing of expected normal ranges in this demographic group, further studies are necessary to fully define the cardiac characteristics of Asian athletes.

Effects of soccer instruction on the executive functions and agility of children in early childhood.

Studies have shown that in open-skill sports the executive function of high-performing players is significantly higher than that of the control group. However, whether participation in soccer effectively improves executive function is unclear because previous studies lacked baseline measurements of executive function. Furthermore, agility, mostly developed in early childhood, is the most demanding component of physical fitness in open-skill sports, requiring sudden changes in body direction while running at full speed. However, no studies have examined the improvement in agility of young children participating in open-skill sports through comparison with a control group. This study aimed to clarify whether instruction in soccer, an open-skill sport, can effectively improve the executive function and agility of kindergarteners compared to a control group. In April 2020, 31 five-year-old children enrolled in kindergarten K in H prefecture in Japan were targeted as the intervention group and received soccer instruction for 12 weeks. In April 2020, a control group was established, consisting of 39 five-year-old children enrolled at the same kindergarten. Participants in both groups were measured for agility, inhibition, and working memory before and after (pre-post) soccer instruction for the intervention group. For each item, a two-way ANOVA of the group (intervention group・control group) x measurement period (pre-post) was performed, showing no significant interactions for working memory and agility. Because only the inhibition effect was significant, simple main effects were tested. Regarding inhibition, although the intervention group (M = 0.18, SD = 0.01) and the control group (M = 0.17, SD = 0.01) did not differ significantly in performance pre-intervention, the intervention group (M = 0.23, SD = 0.01) showed significantly better performance post-intervention compared to the control group (M = 0.19, SD = 0.01) (p < .01). Thus, soccer instruction improved kindergarteners' inhibition, to a level significantly higher than that of the control group. Still, no differences were found between groups regarding working memory and agility.

Chronotype, sleep hygiene, and sleep characteristics among athletes of different disciplines.

The objective of the study was to assess chronotype, sleep hygiene, and sleep characteristics of Italian athletes in order to identify differences among sport disciplines (team- vs individual-sports), level of competition (Elite vs Non-Elite) and sexes. Moreover, correlations between chronotype, sleep hygiene and sleep quality were evaluated. Two hundred eighty Italian athletes (Females:113; Males:167) participated in the study. They completed the Pittsburgh Sleep Quality Index (PSQI), the Sleep Hygiene Index (SHI) and the MorningnessEveningness Questionnaire (MEQ). Among the athletes, 66.4% were intermediate-type, 21.8% were morning-type and 11.8% were evening-type. 55.4% of the sample was classified as good sleeper (PSQI<5), while 16.1% had poor sleep hygiene (SHI≥35). Females had higher total sleep time (p=0.022) than males. Individual-sports showed more morning-oriented score (p=0.001) and lower PSQI (p=0.006) and SHI (p<0.001) scores, with earlier timing of sleep (bedtime:p<0.001; wake-up time:p<0.001) compared to teamsports. Elite athletes exhibited greater sleep efficiency (p=0.009), and lower sleep latency (p=0.018) and wake after sleep onset (p=0.043) than Non-Elite athletes. Additionally, significant correlations were found between PSQI and SHI (r=0.43, p<0.001), and between MEQ and SHI (r=-0.35, p<0.001). This study yields crucial insights into the sleep behaviors of Italian athletes, revealing that nearly half of the sample were bad sleepers.

Adverse Events in Competitive Freediving – Clinical Presentation, Management, and Prevention

Freediving (synonyms: breath-hold diving, apnea diving) has become a popular leisure activity and continues to gain popularity and recognition as both a competitive and recreational sport. Formal freediving competitions are sanctioned by the international Confédération Mondiale des Activités Subaquatiques (CMAS) or the Association Internationale pour le Développement de l’Apnée (AIDA). Both organizations have set up rules and guidelines for competitive pool disciplines where athletes compete for maximum submerged breath-hold time or underwater swimming distance with or without fins. In freshwater disciplines athletes strive for maximum depth using different freediving techniques. These aquatic breath-holding activities carry unique medical risks that are related to environmental factors eliciting extreme physiological challenges. Pool disciplines carry an increased risk of hypoxemia and, consequently, loss of consciousness, particularly in untrained individuals. Hypoxic complications are reported to occur in up to 10% of dives during freediving competitions. Shallow water blackout following hyperventilation to extend breath-hold capability is a serious risk applying to all aquatic breath-hold activities, however, is more common during recreational freediving. Deep freediving poses the athlete to further risks such as barotrauma of ear drums or lungs, immersion pulmonary edema, nitrogen narcosis, and decompression sickness when reaching great depths. While serious complications in competitive freediving are rare, however, the risk clearly rises with increasing depth. Special breathing techniques to increase lung volumes such as glossopharyngeal insufflation carry additional risks. This article reviews possible complications and injury that may occur in competitive freedivers and discusses strategies for management and prevention of possible injury.

Habitus, capital and the shaping of sporting careers: a qualitative study of Norwegian youth

ABSTRACT Previous research has established that youngsters’ sporting repertoires become particularly malleable during the early- to mid-teenage years, shifting from formal, organized sports to more informal, recreational activities. This study investigated the processes underlying these changes, using the theoretical framework of social and cultural capital and habitus. Forty-one individual qualitative interviews, with 17–18-year-old middle-class Norwegians, were conducted in order to understand the role of family, friends, and peers in shaping sporting repertoires and careers. Through three analytical themes – ‘Shifting forms, shifting orientations’; ‘Sporting capital and family cultures of sport’; and Sporting repertoires and the growing significance of friends’ – our findings lend support to notions of family cultures as important in initiating young people’s sporting careers by building their sports-related ‘cultural capital’ and establishing sporting routines. However, our findings also indicate that such primary socialization into sport may not be enough for building the sporting repertoires necessary for lifelong engagement. The development of sporting habitus tends to be facilitated by social capital in the form of friendship networks within which friends become increasingly significant in shaping sporting repertoires. Understanding the dynamism and mutability of sporting repertoires during the youth life-stage is crucial for developing sports policies that foster lifelong sports engagement.

Development of professional skills in kickboxing athletes using virtual reality technologies

Ukrainian sports are currently facing numerous problems due to the hostile military operations by the Russian Federation, leading to the emigration of gifted athletes from the nation. Considering these challenges, the search for novel ways to support and enhance athletes throughout their careers has become critically important. Cutting-edge technologies, especially virtual reality (VR), are being proposed as a potent means to enhance professional training. They facilitate the fusion of traditional and innovative methods, ensuring that athletic training evolves to meet contemporary demands. This strategy adjusts the requirements of athletes across the spectrum, from beginners to professionals, as well as mentors and sports entities eager to incorporate unconventional technologies into their training regimen. Employing immersive VR settings enables the replication of authentic competitive scenarios and training intensities. It offers the capability to monitor biometric data, evaluating the athletes' resilience to stress, their focus, and their strategic expertise. Anticipated outcomes of this holistic approach include enhanced training session productivity, reinforced mental strength in competitors during events, and expedited recuperation from injuries. The introduction and application of VR technology in sports training signifies a leap towards revitalizing traditional training techniques, ensuring they are modular and adaptable. This facilitates seamless integration into a range of sports disciplines and alignment with diverse training schemes, enhancing Ukraine's global sports standing and positioning the nation as a pioneer in athlete training innovation. In this study, we explored the incorporation of VR technology in kickboxing, specifically targeting the 10–12-year age bracket. At this developmental stage, children are particularly receptive to new experiences and stimuli, making such a technologically enriched environment a powerful tool to boost training enthusiasm. Virtual reality holds the promise of breaking the routine of standard training practices, rendering them more captivating and interactive, which is crucial for attracting young participants.

Digital technology for the national sport development: Designing a database model to analyse elite sports data

Relational database models offer a pathway for the storage, standardization, and analysis of factors influencing national sports development. While existing research delves into the factors linked with sporting success, there remains an unexplored avenue for the design of databases that seamlessly integrate quantitative analyses of these factors. This study aims to design a relational database to store and analyse quantitative sport development data by employing information technology tools. The database design was carried out in three phases: (i) exploratory study for context analysis, identification, and delimitation of the data scope; (ii) data extraction from primary sources and cataloguing; (iii) database design to allow an integrated analysis of different dimensions and production of quantitative indicators. An entity-relationship diagram and an entity-relationship model were built to organize and store information relating to sports, organizations, people, investments, venues, facilities, materials, events, and sports results, enabling the sharing of data across tables and avoiding redundancies. This strategy demonstrated potential for future knowledge advancement by including the establishment of perpetual data updates through coding and web scraping. This, in turn, empowers the continuous evaluation and vigilance of organizational performance metrics and sports development policies, aligning seamlessly with the journal’s focus on cutting-edge methodologies in the realm of digital technology.

Epidemiology of Sports-Related Tendon Ruptures Presenting to Emergency Departments in the United States.

Participation in recreational and competitive sports can predispose people to musculoskeletal injuries. Chronic overuse with insufficient recovery, overloading, and direct contact can result in acute primary tendon ruptures. There is scarce literature regarding the epidemiology of sports-related acute primary tendon ruptures in the United States (US). To identify the incidence rate (IR) of sports-related acute primary tendon ruptures presenting to US emergency departments using the National Electronic Injury Surveillance System (NEISS) database and describe the trends in the IR from 2001 to 2020. Descriptive epidemiology study. The NEISS database was queried using injury case narratives; cases with a clear diagnosis of an acute primary tendon rupture were included in the final analysis. National estimates, estimated IRs (reported as per 1,000,000 person-years at risk), and temporal trends in the annual IR (reported as average annual percent change) of acute primary tendon ruptures were calculated using NEISS sample estimates and US Census Bureau population estimates. An estimated total of 141,382 patients (95% confidence interval [CI], 107,478-175,286) presented to US emergency departments with a sports-related tendon rupture over the study period (IR, 22.9 person-years at risk [95% CI, 17.4-28.3]). The mean age was 37.7 years (95% CI, 37.0-38.5). Of all cases of a tendon rupture identified from 2001 to 2020, 60.1% were secondary to exercise/sports-related injury mechanisms. An Achilles tendon rupture was the most common injury, representing 55.9% of cases. Basketball was the most common sports-related injury mechanism, accounting for 36.6% of cases. The overall injury rate in male patients was 7.7 times that of female patients (IR ratio, 7.7 [95% CI, 4.4-13.5]; P < .05). The annual incidence of all sports-related tendon ruptures in the US increased significantly from 2001 to 2020 (average annual percent change, 1.9 [95% CI, 1.0-2.8]; P < .01). Recreational/competitive sports participation accounted for a large proportion of acute primary tendon ruptures in the US during the study period.

Laboratory medicine and sports: where are we now?

Laboratory medicine in sport and exercise has significantly developed during the last decades with the awareness that physical activity contributes to improved health status, and is present in monitoring both professional and recreational athletes. Training and competitions can modify concentrations of a variety of laboratory parameters, so the accurate laboratory data interpretation includes controlled and known preanalytical and analytical variables to prevent misleading interpretations. The paper represents a comprehensive summary of the lectures presented during the 35th Annual Symposium of the Croatian Society of Medical Biochemistry and Laboratory Medicine. It describes management of frequent sport injuries and sums up current knowledge of selected areas in laboratory medicine and sports including biological variation, changes in biochemical parameters and glycemic status. Additionally, the paper polemicizes sex hormone disorders in sports, encourages and comments research in recreational sports and laboratory medicine. In order to give the wider view, the connection of legal training protocols as well as monitoring prohibited substances in training is also considered through the eyes of laboratory medicine.

Student Potential in Developing Beach Recreational Sports Events to Improve Local Tourism

The purpose of this study was to determine the level of student capacity in organizing recreational sports events based on the results of the pre-test and post-test scores. This study used a survey method with a quantitative descriptive research design. Data analysis used a percentage technique based on norm-referenced assessments. The subjects in this study were 30 students of Recreational Business Management. The data collection process used a structured questionnaire. Based on the pre-test and post-test data, the results showed that the Sig. (2-tailed) value was 0.0000.05, so it can be concluded that there is a significant difference between the results of the Pre-Test and Post-Test. This is reinforced by the fact that before carrying out recreational sports activities, the Post-Test results showed a percentage of 41% (Moderate). After carrying out recreational sports activities, the percentage increased to 70% (High).

Socioeconomic Factors and Physical Activity Levels Among Badminton Players in Selected Middle Schools in Guangdong Province

The relationship between socioeconomic factors and physical activity levels in badminton player is a critical area of study, given the long-term implications for health and well-being. Various socioeconomic determinants, including family income, parental education, and neighborhood environment, significantly influence badminton player' engagement in physical activities (Sharma &amp; Gupta, 2021). Family income plays a pivotal role in determining the availability of resources necessary for physical activity. Badminton player from higher-income families often have access to sports equipment, private coaching, and safe recreational facilities, which promote regular physical activity (Patel et al., 2022). Conversely, those from lower-income backgrounds may face financial barriers that limit their participation in organized sports or access to quality facilities, leading to reduced physical activity levels (Rahman &amp; Khan, 2023). Parental education is another significant factor influencing badminton player' physical activity. Educated parents are more likely to recognize the importance of physical activity for their children's health and development (Basu &amp; Das, 2021). They may also have better knowledge and resources to support their children’s involvement in sports and physical activities. In contrast, lower parental education levels are often associated with less awareness and fewer opportunities for badminton player to engage in physical activity (Singh et al., 2020). The neighborhood environment significantly impacts badminton player' physical activity levels. Safe, well-maintained neighborhoods with parks, playgrounds, and sports facilities encourage outdoor activities (Hassan &amp; Rafiq, 2021). However, badminton player living in neighborhoods with high crime rates, poor infrastructure, or limited recreational spaces may be less likely to engage in physical activities due to safety concerns and lack of accessible facilities (Chowdhury et al., 2023). Cultural factors also influence physical activity levels among badminton player. In many societies, cultural norms and expectations can either promote or hinder physical activity (Kumar &amp; Jain, 2022). For instance, traditional gender roles may restrict girls’ participation in sports, while boys might be encouraged to engage in physical activities. Understanding these cultural dynamics is essential for developing effective interventions to promote physical activity among all badminton player. The impact of socioeconomic status (SES) on physical activity is further compounded by educational institutions. Schools in higher SES areas often have better sports facilities, more extracurricular activities, and programs promoting physical education (Sharma &amp; Gupta, 2021). Conversely, schools in lower SES areas may lack these resources, limiting students' opportunities to engage in regular physical activity. This disparity highlights the need for policies to ensure equitable access to physical activity opportunities across different socioeconomic strata. Peer influence is another crucial factor in badminton player' physical activity levels. Badminton player are more likely to engage in physical activities if their peers also participate (Basu &amp; Das, 2021). However, socioeconomic factors can affect the peer group's overall activity levels. Badminton player from higher SES backgrounds might have more active peer groups due to greater access to recreational activities, whereas those from lower SES backgrounds might face peer pressure to engage in sedentary behaviors. Government policies and community programs play a vital role in addressing the socioeconomic disparities in physical activity levels among badminton player. Policies that provide subsidies for sports programs, build recreational facilities in underprivileged areas, and promote safe neighborhood environments can help mitigate the impact of socioeconomic factors (Patel et al., 2022). Effective community programs that target low-income families and educate parents about the benefits of physical activity are also crucial for promoting equitable physical activity levels. Technological advancements and their accessibility also influence physical activity levels. Badminton player from higher SES backgrounds might have access to technology that encourages physical activity, such as fitness trackers and online workout programs (Kumar &amp; Jain, 2022). In contrast, those from lower SES backgrounds may lack access to such technology, further widening the gap in physical activity levels. Socioeconomic factors significantly influence physical activity levels among badminton player. Family income, parental education, neighborhood environment, cultural norms, school resources, peer influence, government policies, and technological accessibility all play crucial roles. Addressing these factors through targeted interventions and policies is essential for promoting equitable physical activity levels and ensuring the long-term health and well-being of all badminton player. Recent research highlights the importance of understanding and addressing these socioeconomic determinants to foster a more active and healthy youth population.

Early Socio-Emotional Difficulty as a Childhood Barrier to the Expected Benefits of Active Play: Associated Risks for School Engagement in Adolescence.

Active play allows children to develop social and cognitive skills, which could lead to higher school engagement. Little is known about the role of child socioemotional difficulty in these associations. This study aims to examine the interaction between active play and socioemotional difficulty in childhood and their prospective association with academic engagement in adolescence. The participants were 4537 children (51.1% boys) who were longitudinally followed, between ages 6 and 14 years, from the National Longitudinal Study on Children and Youth (NLSCY), Canada. Active play (weekly organized sport and unstructured physical activity outside of school hours) and child behavior (hyperactivity, anxiety, and relational difficulties) were reported by mothers for their children at age 6 years. Academic engagement was self-reported at age 14 years. Unstructured physical activity predicted lower subsequent school engagement for boys (β = -0.057, p < 0.05). Boys with high anxiety symptoms and high relational aggression who participated in more unstructured physical activity in childhood were subsequently less engaged in school (respectively, β = -0.066, p < 0.05 and β = -0.062, p < 0.05). Girls who partook in more organized sports showed lower school engagement in adolescence when they had high anxiety symptoms (β = -0.067, p < 0.05). Although past studies have highlighted the contribution of active play to school engagement, certain socioemotional difficulties could impede the child's ability to reap its benefits.

Teaching General Physical Training discipline in the format of distance learning

The issues of teaching the General Physical Training discipline in the distance learning format and the development of distance courses of sports disciplines in the period before the COVID-19 pandemic and the associated self-isolation were practically not studied. The contradiction between the active introduction of distance learning in modern universities and insufficient experience and methodological elaboration of this issue in relation to teaching sports disciplines causes the problem of maintaining the quality of teaching the General Physical Training discipline in the distance learning format. The purpose of the study is to develop methodological support, test and evaluate the effectiveness of teaching the General Physical Training discipline in the distance learning format. Students of the Faculty of Physical Training, Sports and Tourism of the Mari State University, 44 young men aged 17 to 19, participated in the study in the form of a pedagogical experiment. The results indicate that, in general, the development of physical qualities of students of the experimental group was no worse than in the control group, and the acquisition of theoretical knowledge of students of the experimental group was better than that of students of the control group. The acquisition of theoretical knowledge, the development of speed and flexibility of students during the transition to distance teaching of the General Physical Training discipline practically do not lose quality compared to full-time education, and solving the problems of developing strength, endurance and coordination abilities of students requires additional methodological work on the part of the teacher.

Sex difference in IRONMAN age group triathletes.

The sex difference in athletic performance has been thoroughly investigated in single sport disciplines such as swimming, cycling, and running. In contrast, only small samples of long-distance triathlons, such as the IRONMAN® triathlon, have been investigated so far. The aim of the study was to examine potential sex differences in the three split disciplines by age groups in 5-year intervals in a very large data set of IRONMAN® age group triathletes. Data from 687,696 (553,608 men and 134,088 women) IRONMAN® age group triathletes (in 5-year intervals from 18-24 to 75+ years) finishing successfully between 2002 and 2022 an official IRONMAN® race worldwide were analyzed. The differences in performance between women and men were determined for each split discipline and for the overall race distance. Most finishers were in the age group 40-44 years. The fastest women were in the age group 25-29 years, and the fastest men were in the age group 30-34 years. For all split disciplines and overall race time, men were always faster than women in all groups. The performance difference between the sexes was more pronounced in cycling compared to swimming and running. From the age group 35-39 years until 60-64 years, the sex differences were nearly identical in swimming and running. For both women and men, the smallest sex difference was least significant in age group 18-24 years for all split disciplines and increased in a U-shaped manner until age group 70-74 years. For age groups 75 years and older, the sex difference decreased in swimming and cycling but increased in running. Considering the different characteristics of the race courses, the smallest performance gaps between men and women were found in river swimming, flat surface cycling and rolling running courses. The sex difference in the IRONMAN® triathlon was least significant in age group 18-24 years for all split disciplines and increased in a U-shaped manner until age group 70-74 years. For 75 years and older, the sex difference decreased in swimming and cycling but increased in running.

Longitudinal comparison of the relationship of energy intake with body composition and physical performance in elite female basketball and volleyball players

Abstract Purpose To maximise sporting success, disciplines such as basketball and volleyball need to improve their methods of analysing the sporting performance and fitness of their athletes. Although energy intake quantities have been established at a theoretical level for women to perform at a sporting level, it has been found that these energy intake levels are not met or followed and that, despite this, the performance of female players is not diminished. Thus, the purpose of this research study was to describe and compare the anthropometric characteristics of these two disciplines and to identify the differences in actual and theoretical energy intake, as well as to observe physical performance in both disciplines. Methods Anthropometric data, continuous quantitative data, training time and characteristics, and energy intake data were collected. Performance tests included upper and lower body strength, speed, agility, and endurance tests. Dietary monitoring showed lower intakes of total energy, carbohydrate and protein than theoretically recommended. However, the athletes experienced overall improvements in performance and body composition. Results The mean total energy intake was 20.2 ± 4.3 kcal·kg−1·day−1. The minimum individual mean intake was 9.8 kcal·kg−1·day−1 and the maximum was 25.95 kcal·kg−1·day−1. Carbohydrates accounted for 54.3% ± 8.8% of the energy intake; 20.3% ± 6.5% from fats; 25.4% ± 5.7% from proteins. Conclusions Current data suggest that, although a cause-effect relationship between dietary intake and BC performance cannot be determined, elite athletes in these sports disciplines may experience beneficial outcomes despite having lower total energy, CHO, protein, and fat intakes than previously recommended in the literature.

Child Sexual Abuse and Boundary Violating Behaviors in Youth Serving Organizations: National Prevalence and Distribution by Organizational Type.

Many youth serving organizations (YSOs) implement child sexual abuse (CSA) prevention strategies. We examined the potential impact of those strategies by retrospectively estimating the prevalence of CSA and boundary violating behaviors experienced in five broad organizational settings: organized sports, religious organizations, music or arts programs, K-12 schools, and the "Big 6 settings" (i.e., 4-H, Big Brothers Big Sisters of America, Boys and Girls Clubs of America, Boy Scouts of America, Girl Scouts of the USA, and the YMCA of the USA). We compared victimization rates between nationally representative cohorts of younger adults (age 18-22; N = 3174) and slightly older adults (age 32-36, N = 3237). Across all participants and settings, 3.75% (n = 363) experienced CSA in YSOs. Among survivors, younger adults reported experiencing a lower proportion of CSA within Big 6 settings than older adults (29.1% vs. 44.5%; p < .05), suggesting that prevention efforts may be having the desired effects in Big 6 settings.

Item Bank Development and Content Validation of a Youth Sport Specialization Assessment

OBJECTIVE: To refine and evaluate the content validity of a bank of items representing the physical, social, and motivation behaviors associated with youth sport specialization. DESIGN: Qualitative analysis METHODS: The conceptual framework for item generation involved an existing consensus-based definition of youth sport specialization. Purposive sampling recruited English literate youth athletes who participated in at least one organized sport in the past 12 months to participate in individual cognitive interviews. Three rounds of interviews used a ‘read aloud; think aloud’ strategy to evaluate the comprehension, relevance, and comprehensiveness of the items and their response structure. One reviewer conducted thematic analysis of verbatim transcripts following rounds 1-2; after round 3, two independent reviewers evaluated the content validity of all items. The full research team reviewed results and established consensus regarding item acceptance, revision or removal. RESULTS: Twenty-two participants (64% male, 13.8±3.0 years) were interviewed. Participants were classified as low (59%), moderate (23%), and high (18%) specialization. Thirty-one items organized into participation volume, physical, motivation, and social domains were tested. Comprehension of 24 items in the physical (n=6), motivation (n=12), and social (n=6) domains was acceptable. No participation volume items achieved content validity. Acceptable items were considered relevant to youth sport specialization, and the item bank was deemed comprehensive. Participants affirmed the response structure was easy to understand and use. CONCLUSION: Content validity was established for a bank of patient-reported items assessing youth sport specialization. An appropriate next step is to conduct psychometric evaluation and develop a youth sport specialization assessment.

Sport participation, weight status, and physical fitness in French adolescents.

The primary objective of this study was to investigate the associations between sport participation and weight status with physical fitness among French adolescents. The secondary aim was to establish sex- and age-specific physical fitness percentiles for French adolescents. The sample comprised 8084 adolescents (4126 boys, 3958 girls), aged 10-14years. Participants were tested on cardiorespiratory fitness and muscular strength using the following tests: 20-m shuttle run test and handgrip strength test. A questionnaire on organized sport participation was completed. Physical fitness levels were better in boys (P < 0.005). Handgrip strength increased with age whereas 20-m shuttle run performance decreased with age. Overweight and obese adolescents had significantly lower cardiorespiratory fitness levels than their normal-weight peers (P < 0.005), whereas normal-weight adolescents had lower cardiorespiratory fitness than thin adolescents (P < 0.005). Sport participation was higher for boys (57.2% boys vs. 52.8% girls) (P < 0.001). Adolescents who participated in at least one organized sport (either through a club or at school) were fitter than those who did not participate in organized sports (P < 0.005). Adolescents who engaged in organized sports were more active and physically fit than those who did not participate. The fitness benefits of club sports are greater than those provided by school-based sports, highlighting the potential of sports clubs as a key setting for promoting health. What is Known: • Physical fitness is a strong marker of health in children and adolescents. • The last French Report Card highlighted the lack of fitness data and the need for nationwide programs, while showing a significant decline in cardiorespiratory fitness among youth in recent decades.. What is New: • This study reveals that adolescents participating in organized sports have better physical fitness compared to their peers who do not, emphasizing the potential advantages of club sports over school-based activities. • We highlight the need for targeted strategies, particularly for overweight or obese adolescents and girls, to increase participation in organized sports and enhance health outcomes. • The study emphasizes the need to develop policies that improve access to organized sports clubs and expand physical education in schools, aiming to improve CRF in adolescents.

Perception Matters: Attitudes Toward Transgender Inclusion in Campus Recreational Sports

The participation of transgender individuals in sporting spaces continues to receive increased attention in both popular media and in academic scholarship. However, while attention is growing, little is known about the attitudes the general public holds toward transgender sport participation. This is particularly true when it comes to attitudes participants hold toward transgender persons and their participation in recreational sport programming. As such, this study quantitatively explores the attitudes of intramural and club sport participants across the United States toward transgender persons and transgender participation in recreational sport programming. Specifically, results emphasize (a) the general attitudes of recreational sport participants toward transgender persons, (b) the attitudes of recreational sport participants toward the participation of transgender persons in recreational sport programs, (c) differences in attitudes by gender, and (d) differences in attitudes by program area (intramural vs club sport). Discussion of these differences and practical implications for recreational sports are considered.