Male Sport Research Articles

Effects of high-intensity interval training on selected indicators of physical fitness among male team-sport athletes: A systematic review and meta-analysis.

Superior physical fitness and performance are essential in male team sports. Among a myriad of training methodologies, high-intensity interval training (HIIT) has gained popularity owing to its unparalleled efficiency and effectiveness. Previous studies have established that HIIT is a proven and effective approach for enhancing various physiological performance outcomes, particularly oxygen consumption capacity, in individual sports. Despite potential differences in training practices between male and female athletes, HIIT is recognized as an anaerobic training approach for team-sport athletes. This systematic review aimed to comprehensively and innovatively analyze the existing literature to examine the effectiveness of HIIT on oxygen consumption performance among male team-sport athletes. A comprehensive literature search was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines across the PubMed, SCOPUS, Web of Science, and SPORTDiscus databases until December 31, 2023. The inclusion criteria for this review encompassed research articles published in peer-reviewed journals that specifically focused on the impact of HIIT on the oxygen consumption performance of male players engaged in team sports. The study population exclusively consisted of male participants. The collected data included study characteristics, participant demographics, intervention details, and outcomes. Methodological quality assessment was performed using standardized criteria. The effect sizes (ESs) were calculated, and a meta-analysis was conducted using a random-effects model. The literature search yielded 13 eligible studies encompassing 286 athletes aged 14-26 years. The meta-analysis showed statistically significant enhancements in maximal oxygen uptake (VO2max) in six studies (ES, 0.19-0.74; p < 0.005), Yo-Yo Intermittent Recovery Test (YYIRT) performance in six studies (ES, 0.20-2.07; p = 0.009), repeated-sprint ability total time (RSAtotal) in five studies (ES, 0.18-1.33; p < 0.001), and the best and average times for repeated-sprint ability (RSAbest and RSAmean, respectively) in four studies (ES, 0.47-1.50; p < 0.001). However, two studies did not report any significant differences in the outcomes of the Velocity in 30-15 Intermittent Fitness Test (VIFT) between the experimental and control groups (ES, -0.08 and -0.27; p = 0.87 and 0.443, respectively). Moreover, one study did not report any significant differences in the maximal aerobic speed (MAS) (ES, 0.41, p = 0.403). HIIT significantly improved VO2max, YYIRT, and RSA; however, it did not appear to enhance VIFT and MAS performance, irrespective of age or competition level. These findings indicate that HIIT could serve as a valuable method for improving oxygen consumption performance (VO2max, YYIRT, and RSA) in male team-sport athletes, offering a time-efficient alternative to the traditional training methods. Further research is warranted to investigate its impact on performance outcomes in competitive settings and identify optimal HIIT protocols tailored to specific team sports.

Burnout and sleep quality in sports managers

Sports managers have great responsibilities aimed at coordinating and directing the organization through the employed staff who will be given precise tasks, regardless of their hierarchical position. Perfectionism or unfulfilled expectations can influence employees’ subjective state, making them more or less vulnerable and prone to burnout. In the present study sleep quality and burnout dimensions (exhaustion and work disengagement) were addressed, in successful sports managers (n = 20), and, also, in the case of future managers (n = 23). The Oldenburg Burnout Inventory and The ATHENS Insomnia Scale were used. For data analysis and processing independent sample t-test and Mann-Whitney (U) test were performed. The results emphasized that female successful managers reported significantly poorer sleep quality and higher daytime sleepiness compared to male successful sports managers. Gender-related differences in terms of burnout dimensions were, also, discussed.

Force-velocity-power variables derived from isometric and dynamic testing: metrics reliability and the relationship with jump performance.

We investigated the convergent validity and intrasession reliability of force, velocity, and power (FVP) variables and the dynamic strength index (DSI) obtained from isometric midthigh pull (IMTP) and squat jump (SJ) testing. Fifteen male combat sports athletes (27 ± 5 years, 77 ± 9 kg, 1.76 ± 0.1 m, 14 ± 6% body fat) participated in a 2-days study. The first day involved testing familiarization, while the second was dedicated to IMTP and SJ testing. Maximal isometric force (Fiso ) was obtained from IMTP, while mean force, mean velocity, jump height, and jump impulse (J) were gathered from SJ. To analyze the FVP, we calculated the linear relationship between force and velocity, which allowed us to obtain the slope of the relationship (SFV ), the theoretical velocity at zero force (V0 ), and the theoretical maximal power (Pmax ). DSI was obtained as a ratio from SJ peak force and Fiso . The convergent validity was investigated using Spearman's ρ coefficients to assess the relationships between jump height and J with Fiso , V0 , SFV , Pmax , and DSI. The intrasession reliability was assessed using intraclass correlation coefficients (ICC) and coefficient of variations (CV). All variables demonstrated acceptable reliability scores. ICC ranged from moderate to excellent, and the mean CV was <10%. We found a "very large" correlation between jump J and Pmax , while jump height was not correlated with any variable. In conclusion, the IMTP and SJ combination is a practical way to determine FVP producing capacities that can be reliably measured (intrasession). The Pmax , derived from FVP, was correlated with jump performance, which might evidence the convergent validity of the method.

Effect of foot strike patterns and angles on the biomechanics of side-step cutting

ObjectivesThe study aimed to determine how foot strike patterns and cutting angles affect lower extremity (LE) kinematics, kinetics, and muscle activity during side-step cutting.MethodsTwenty male college sport athletes participated in this research. Three-dimensional motion analysis featuring ground reaction force (GRF) and electromyography (EMG) of the dominant leg was used. LE kinematics, kinetics, and EMG data parameters were obtained during a 45° and 90° side-step cutting involving rearfoot strikes (RFS) and forefoot strikes (FFS).ResultsThe significant foot strike pattern × angle interactions were observed for the ankle eversion range of motion (ROM) at the loading phase. Cutting of 90° had greater knee flexion ROM, knee valgus ROM, and knee varus moment compared to that of 45°. RFS cutting had greater knee flexion, hip flexion, knee valgus, knee varus moment, knee varus moment, and ankle eversion ROM. FFS cutting produced a lower vertical GRF, lateral GRF, and a loading rate. Both vastus medialis and vastus lateralis muscle activities were remarkably greater during cutting of 90° than 45°. At the loading phase, semitendinosus, biceps femoris, and the lateral head of gastrocnemius muscle activities during FFS cutting were considerably greater than those during RFS cutting.ConclusionThe FFS pattern can better protect the anterior cruciate ligament (ACL) and improve the flexibility of athletes by increasing the plantarflexion torque of the ankle. The injury risk also increases with the larger cutting angle. The EMG activities of semitendinosus and biceps femoris are vital for the stability of knee joint during side-step cutting, which helps reduce ACL stress during buffering.

The Role of Biomarkers in Monitoring Chronic Fatigue Among Male Professional Team Athletes: A Systematic Review.

This systematic review synthesizes evidence on biomarker responses to physiological loads in professional male team sport athletes, providing insights into induced fatigue states. Structured searches across major databases yielded 28 studies examining various biomarkers in elite team sport players. Studies evaluated muscle damage markers, anabolic/catabolic hormones reflecting metabolic strain, inflammatory markers indicating immune activity and tissue damage, immunological markers tied to infection risk, and oxidative stress markers showing redox imbalances from excessive physiological load. Responses were examined in official matches and training across competitive seasons. The evidence shows that professional team sports induce significant alterations in all studied biomarkers, reflecting measurable physiological strain, muscle damage, oxidative stress, inflammation, and immunosuppression during intensive exercise. These effects tend to be larger and more prolonged after official matches compared to training. Reported recovery time courses range from 24-h to several days post-exercise. Monitoring biomarkers enables quantifying cumulative fatigue and physiological adaptations to training/competition loads, helping to optimize performance while mitigating injury and overtraining. Key biomarkers include creatine kinase, testosterone, cortisol, testosterone/cortisol ratio, salivary immunoglobulin-A, and markers of inflammation and oxidative stress. Further research should extend biomarker monitoring to cover psychological stress and affective states alongside physiological metrics for deeper insight into athlete wellness and readiness.

Mechanical power distribution of the lower limbs changed during intermittent 300 countermovement jumps.

The aim of this study was to investigate the effect of 300 intermittent countermovement jumps (CMJs) on the mechanical power distribution at the joints of the lower limbs and the influence of the upper body to explain vertical jump performance. Fifteen male sport students (age 24.5 ± 2.3years; body height 1.85 ± 0.06m; body mass 84.8 ± 8.5kg) performed a set of intermittent 300 CMJs at maximal effort. An inverse-dynamic approach was used to calculate the mechanical power at the hip, knee, and ankle joint for each jump. Jump height and mechanical power in the knee and ankle joints decreased significantly (p < .010), while remained the same in the hip joint. In contrast, a significant increased vertical velocity was observed for the upper body segment. In addition, a significant higher angular momentum at the center of mass was detected during the braking and propulsion phase. The findings highlight a fatigue-related decrease in lower limb power, particularly in the knee and ankle joints, which changed the mechanical power distribution at the joints of the lower limbs. The trunk extensor muscles were probably able to counteract the fatigue-related decrease in lower limb power by increased vertical velocity of the upper body segment and higher angular momentum at the center of mass during the braking and propulsion phase. Accordingly, the most effective way to maintain jumping performance in fatigued state would be to improve the fatigue resistance of the knee extensors, ankle plantar flexors, and trunk extensor muscles.

Why don’t former female athletes have kids? Exploring career and post-career paths in elite sport in Switzerland

Female elite athletes are less likely than male elite athletes to have children during their careers, in part because of the difficulty of balancing motherhood and elite sports. Does this childlessness gap disappear or persist in the post-career period? What factors determine the childlessness of former athletes? The article presents the results of a quantitative cross-sectional study of 1255 former elite athletes who participated in at least one national competition in their discipline and reside in Switzerland. The results indicate that women are more likely than men to remain childless in the post-career years, and that they are also more likely than women in the general population to remain childless. The analyses point to the importance of the gendered orientation of sport socialization (for instance, essentialist representations, valorization of masculinity) in understanding ex-athletes’ relationship to parenthood and in explaining their childlessness. Examining the phenomenon of childlessness reveals that socialization of athletes in gendered sport leaves traces on their representations and practices that are visible even after their careers have ended. In particular, women who have experienced the most inverted gender socialization by playing a male sport have the highest rate of childlessness.

Unveiling Players' Perceptions of Mother- and Father-Initiated Motivational Climates and Fear of Failure in Youth Male Team Sports.

The aim of this study was to examine the relationship between perceived mother- and father-initiated motivational climates and players' fear of failure in youth male team sports. A sample of 336 youth male players from five team sports (basketball, football, handball, volleyball, and water polo) completed the Parent-Initiated Motivational Climate Questionnaire-2 and the Performance Failure Appraisal Inventory. The results showed that perceived mother- and father-initiated motivational climates were related to fear of failure predispositions. While a mastery orientation (perceived learning-enjoyment climate) had a low association with fear of failure, an ego orientation (perceived worry-conducive and success-without-effort climates) was highly related to fear of failure. Father-initiated climates had stronger associations with fear of failure than mother-initiated ones, revealing that mothers and fathers may have different influences when considering the developmental origins of fear of failure. The relationships between mother- and father-initiated motivational climates and fear of failure varied according to the type of sport, with basketball, football, and volleyball presenting stronger associations. The dimensions "Fear of important others losing interest" and "Fear of upsetting important others" presented the highest explained variance in all sports when predicted by the father-initiated motivational climate. The findings can inform important evidence-based guidelines and recommendations for parents, coaches, and organizations, enabling them to create supportive environments that aid athletes in developing the necessary psychological skills for long-term success and well-being.

The Principal’s Problem: Anchoring Equity in an Exclusionary System

This paper, titled "The Principal’s Problem: Anchoring Equity in an Exclusionary System," offers a critical examination of the multifaceted challenges faced by school administrators in navigating an educational landscape marked by growing equity issues, safety concerns, and the mental health crisis among students. Drawing from the author's 35-year experience in various educational roles in Massachusetts, the critical situational analysis delves into the complexities of fostering a safe, inclusive, and equitable school environment amid a youth mental healthcrisis, reactionary legislative demands, and a hostile, binary, social landscape. The first section of the paper emphasizes the evolving role of educators in addressing the emotional well-being and safety of students. It illustrates how external tragedies, such as student suicides and drug overdoses, directly impact school policies and practices. The author highlights systemic inequities, such as disparities in recognition and funding between male and female sports teams and the controversy over gender-specific graduation gown colors, illustrating the difficulties in upholding Title IX and fostering gender equality. The paper further explores the escalation ofgun violence and its profound impact on school safety protocols and legislation. It addresses the administrative burden of complying with a myriad of regulations aimed at ensuring student safety and emotional well-being, from bullying and gender identity to mental health and substance abuse. The first-person narrative critiques the overwhelming expectations placed on school administrators to act as both educational leaders and first responders in a socioeconomically diverse and politically charged environment. It argues for a more holistic approach to educational leadership, one that balances legal and moral obligations to protect free expression with the imperative to create a nurturing and inclusive school culture. The author posits that the real challenge lies in the practical implementation of these ideals.

The Principal’s Problem: Anchoring Equity in an Exclusionary System

This paper, titled "The Principal’s Problem: Anchoring Equity in an Exclusionary System," offers a critical examination of the multifaceted challenges faced by school administrators in navigating an educational landscape marked by growing equity issues, safety concerns, and the mental health crisis among students. Drawing from the author's 35-year experience in various educational roles in Massachusetts, the critical situational analysis delves into the complexities of fostering a safe, inclusive, and equitable school environment amid a youth mental healthcrisis, reactionary legislative demands, and a hostile, binary, social landscape. The first section of the paper emphasizes the evolving role of educators in addressing the emotional well-being and safety of students. It illustrates how external tragedies, such as student suicides and drug overdoses, directly impact school policies and practices. The author highlights systemic inequities, such as disparities in recognition and funding between male and female sports teams and the controversy over gender-specific graduation gown colors, illustrating the difficulties in upholding Title IX and fostering gender equality. The paper further explores the escalation ofgun violence and its profound impact on school safety protocols and legislation. It addresses the administrative burden of complying with a myriad of regulations aimed at ensuring student safety and emotional well-being, from bullying and gender identity to mental health and substance abuse. The first-person narrative critiques the overwhelming expectations placed on school administrators to act as both educational leaders and first responders in a socioeconomically diverse and politically charged environment. It argues for a more holistic approach to educational leadership, one that balances legal and moral obligations to protect free expression with the imperative to create a nurturing and inclusive school culture. The author posits that the real challenge lies in the practical implementation of these ideals.

Comparative Analysis of Adaptations Progress in VO2max, Leg Power, and Agility among Male and Female Sports Science Students

The strength and conditioning program has emerged as a widely adopted, structured exercise intervention aimed at enhancing muscle strength, endurance, speed, power, flexibility, and physical function, all while mitigating the risk of injuries. Several studies, however, have assessed strength and conditioning interventions in general for sports science students at the university. Objectives: Therefore, this study aims to explore the differential effects of a strength and conditioning program incorporating a combination of Continuous Run (CR) and Circuit Training (CT) methods on VO2max, leg power, and agility applied to male and female sports science students. Material and Methods: Utilizing a quasi-experimental design with a one-group pretest-posttest setup spanning from July to October 2022, the study consisted of 8 microcycles (8 weeks) comprising 24 sessions, where each microcycle included 2 active rest days (recovery run). A total of 63 students with bachelor’s degrees in sports science who have recently enrolled as freshmen in the Faculty of Sports Science (n = 39 men; n = 24 women; aged = 18-20 years; mass (kg) man and women = 60 ± 7 and 51 ± 6, Height (cm) men and women = 172 ± 4 and 158 ± 3, and not trained athletes) were selected through purposive sampling and provided informed consent in the present study. Pre- and post-measurements were conducted using the Multi-Stage Fitness Test (MSFT), standing broad jump test, and the Illinois agility run test. Descriptive and inferential data analyses (differential pre and post-test using the Wilcoxon test) were performed using SPSS 25 software. Results: Our findings reveal significant improvements in VO2max and leg power following the implementation of a strength and conditioning program that combines circuit training with continuous running for males (from 35.76±5.94 to 41.99±5.35 and 2.175±0.23 to 2.30±0.25, respectively: P&lt;0.05). Meanwhile, for females, (25.97 ± 2.78 to 31.10 ± 3.09; 1.66±0.24 to 1.72±0.17; P&lt;0.05). However, the study does not identify a significant improvement in agility for both male and female participants (17.90±0.95 to 17.69±0.87; P&gt;0.05 and 20.13 ± 1.17 to 19.89 ± 1.19; P&gt;0.05). Conclusions: This investigation provides valuable insights into the effectiveness of an integrated strength and conditioning program using a combination of Continuous Run (CR) and Circuit Training (CT) methods on VO2max and Leg power, for both males and females. Although there were no significant improvements in agility for either males or females, there was an increase in overall averages. The results offer implications for optimizing physical performance and refining training protocols. Therefore, the combination of Continuous Run (CR), circuit training (CT), and Circuit Resistance Training (CRT) has proven to be a practical strategy for enhancing VO2max and leg power. This is particularly relevant for coaches seeking to diversify exercise variations that can be applied to sports science students in the future Keywords: Strength and Conditioning, Circuit Training, Continuous Run, VO2max, Leg Power, Agility, Sports Science Students

Blood, Sweat, and Tears: Implications for Hydration Testing in Combat Sports-Investigating Body Mass Loss and Biomarker Changes.

Combat sports athletes often undergo rapid body mass loss (BML), which presents health risks. Hydration testing has been proposed as a possible solution to reduce or eliminate rapid BML. However, combat sports athletes may exhibit distinct physiological characteristics due to repeated exposure to BML. Thus, traditional and emerging hydration biomarkers should be investigated to determine their potential suitability for field use in this cohort. This study examined whether BML can explain changes in serum and urine osmolality (SosmΔ, UosmΔ), tear osmolarity (TosmΔ), hematocrit (HctΔ), and urine-specific gravity (USGΔ) after mild-moderate passive dehydration. Biomarker reliability was also assessed across two trials. Fifteen male and female combat sports athletes (age: 26.3 ± 5.3 years, body mass: 67.7 ± 9.9 kg) underwent a sauna protocol twice (5-28 days apart) aiming for 4% BML. The average BML in Trials 1 and 2 was 3.0 ± 0.7%. Regression analysis revealed that BML explained HctΔ (R2 = 0.22, p = 0.009) but not SosmΔ (R2 = 0.11, p = 0.079) or other biomarkers. Intraclass correlation coefficients (ICCs) were significant for all biomarkers except TosmΔ (ICC = 0.06, p = 0.37) and post-Tosm (ICC = 0.04, p = 0.42); post-Hct performed best (ICC = 0.82, p < 0.001). Contingency tables with post-Sosm (295 mOsm/kg) and post-USG (1.020) cutoffs revealed an 80% true negative rate (TNR) and a 62% true positive rate (TPR). Increasing the Sosm cutoff to 301 mOsm/kg decreased the TNR to 52% but increased the TPR to 83%. Although blood parameters were most sensitive to BML, they could only explain 11%-22% of biomarker variation. The typical USG cutoff misclassified 42% of athletes postdehydration, and reliability was generally poor-moderate. Alternative strategies should be pursued to manage rapid BML in combat sports.

Reflective and critical thinking as determinants of academic achievement: A study in physical education and sport teacher candidates

This study examined the relationship between reflective thinking and academic achievement in physical education and sports teaching students. The research aimed to investigate to what extent the reflective and critical thinking tendencies of prospective physical education and sports teachers explain academic achievement. Based on John Dewey's vital and reflective thinking approaches, considered among thinking skills, an answer to this question was sought. A traditional and positivist paradigm was adopted as the research model, and a quantitative research approach was used. The study was designed with the relational method, and the relationship between critical and reflective thinking dispositions of physical education and sports teacher candidates and their academic achievement was analysed. The study group consisted of 200 participants studying in the first, second, third and fourth grades of the physical education and sports teaching program. The mean age of the participants was 22.20±2.98; 44.5% exercised regularly, and 49% were licensed athletes. Data collection tools included personal information forms, academic achievement grouping, the Critical Thinking Scale, and the Reflective Thinking Scale. The Critical Thinking Scale was adapted to Turkish using a two-dimensional model. The Reflective Thinking Scale has four sub-dimensions. The Confirmatory Factor Analysis indicated that some items were not suitable due to high error variances and cross-loading. After removing these items based on expert opinions, the remaining items in the reflection and critical reflection dimensions showed very good factor loadings. The reliability coefficients for the scale were satisfactory. Final year students scored higher in critical reflection and reflective thinking than third-grade students. No significant difference was found in critical openness, reflective skepticism, and critical thinking. Male physical education and sports teacher candidates scored higher in reflection, critical reflection, and reflective thinking tendency than their female counterparts. Consequently, the findings show that reflective thinking can potentially increase academic achievement in prospective physical education and sports teachers. These findings emphasize that developing thinking skills should be a priority in education programs.

Physiological, perceptual and neuromuscular responses to 15 vs. 30 s work durations during short high intensity interval training

High intensity interval training (HIIT) is an extremely potent stimulus for physiological adaptation offering a low volume training approach that can be easily accommodated into an individual’s training schedule. A key feature that drives physiological adaptation is the time the individual spends at or around their individual V̇O2max during HIIT. This can be influenced by several variables, including the work bout duration (Buchheit &amp; Laursen, 2013, Sports Med, 43, 318-338). The use of short duration HIIT intervals (i.e., &lt; 60 s) are popular due to their ability to facilitate a high oxygen uptake while minimising fatigue (Buchheit &amp; Laursen, 2013, Sports Med, 43, 318-338). However, the physiological response to different short duration HIIT formats has not yet been investigated. The aim of this study was to measure the physiological, perceptual and neuromuscular responses to two traditional short duration (i.e., 15 and 30 s) HIIT formats in trained athletes. With ethics approval, 10 well-trained male and female team sport players (mean + SD; age: 22 ± 1 years; body mass: 78 ± 6 kg; stature: 176 ± 4 cm) were recruited to the study and visited the laboratory on three separate occasions. After an incremental test to exhaustion on a cycle ergometer to establish V̇O2max (52.3 ± 5.7 ml·kg-1·min-1) and peak power output at V̇O2max (pV̇O2max; 313 ± 21 W), two HIIT sessions (15 s effort: 15 s passive recovery and 30 s effort: 30 s passive recovery) were completed in a randomised order. HIIT interventions comprised 15 s or 30 s at 120% pV̇O2max followed by 15 or 30 s passive recovery, repeated for 2 × 6 min with 5 min active recovery at 40% pV̇O2max. V̇O2, time &gt;90% V̇O2max, heart rate, and RPE were measured during the HIIT session and blood lactate concentration recorded 5 minutes afterwards. Measures of knee extensor maximal voluntary contraction (MVC) were measured immediately before and after each HIIT session.

Chronobiological approaches and habitual routine: effect on morning physical performance in male team sport players

Achieving peak morning physical performance for team sport players is vital due to the vast degree of performances tend to take place in the morning. It has been well-documented that undertaking chronobiological approaches and having a habitual routine can have an impact on performance, however the combination of the two have not been clearly interpreted. Therefore, the aim of the present study was to examine how combined chronobiological approaches and habitual routine had an influence on morning physical performance. Using a double-blinded, randomized counterbalanced design, team sport male participants (n = 12) were recruited, with institutional ethics approval, and completed five sessions: (i) two familiarization sessions; (ii) one bright light (BL) morning exercise condition; (iii) two testing conditions either: habitual (the morning after BL), or No pill. The morning physical performance tests carried out were as followed: Intra-aural temperature and fingertip blood glucose and lactate, taken throughout: at rest, post warm-up and immediately after the RSP test, mood assessed using Perceived Onset Mood State (POMS) questionnaire, 3 right and 3 left hand grip strength measures, and a maximal repeated sprint performance (RSP) protocol (10 × 20 m, 30 s recovery period). Heart rate (HR), thermal comfort (TC), and rating of perceived exertion (RPE) were all recorded after each sprint. Data were analysed using a general-linear model.

Prevalence of disordered eating and its relationship with rapid weight loss amongst male and female combat sport competitors: A prospective study

ObjectivesTo compare prevalence and change scores of disordered eating (DE) in combat sport athletes by sex and explore the potential relationship between rapid weight loss (RWL) and DE scores. DesignProspective study based on 24 events (September 2022–2023). MethodsA body mass (BM) questionnaire was completed at ~1 day post-competition providing pre-competition BM data for −7 days, −24 h, and weigh-in. The Athletic Disordered Eating (ADE) online questionnaire was completed at ~7 and ~28 days post-competition, providing overall DE and four subscale scores (food and energy control, bingeing, body control, and body discontent). ResultsThere were 122, 132, and 89 respondents for the BM (77 % male), and ADE questionnaires at 7 (79 % male), and 28 days (74 % male). A large proportion of males' (83 %) and females' (89 %) DE scores were moderate to very high; minimal (17 % vs. 11 %), moderate (36 % vs. 32 %), high (37 % vs. 36 %), and very high (11 % vs. 21 %). Comparing DE change scores in males and females indicated deterioration (5 % vs. 0 %), improvement (3 % vs. 25 %, p = 0.013), and no difference (92 % vs. 75 %). Body discontent change score showed a significant sex difference (p = 0.014), with females improving (42 % vs. 17 %, p = 0.035) and males deteriorating (35 % vs. 4 %, p = 0.008). Correlation analyses were significant for RWL −7 days and males' food control score (R = 0.22, p = 0.031). ConclusionsModerate to very high DE indications were identified in 4 of every 5 combat sport competitors. A sex-specific change in body discontent is evident, and most competitors struggle with their food–body relationship post-competition, irrespective of RWL magnitude.

Perbedaan Tingkat Daya Tahan Kardiovaskular Antara Siswa Perokok dan Tidak Perokok

Smoking has become a habit and is a public health problem throughout the world, especially among teenagers. Smoking in adolescence can interfere with fitness, one of the effects experienced is a decrease in cardiovascular endurance. The aim of this study was to determine the level of cardiovascular endurance of male extracurricular sports students who were smokers and non-smokers at SMAN 1 Parang. The design of this research is comparative research. The techniques used to collect data are filling out questionnaires and VO2Max tests. The subjects used in the research were 22 boys' extracurricular sports students at SMAN 1 Parang, divided into 10 futsal extracurriculars and 12 volleyball extracurriculars. The instrument used is the Multistage Fitness Test (MFT). Then, the data analysis technique used is to carry out data prerequisite tests (normality test and data homogeneity test) and hypothesis test (Independent t-test) and in analyzing the data from this research using SPSS version 26 software. Based on the research results and data analysis there are differences The VO2Max level which can be seen from the average value is 33.9 for smoking students and 42.1 for non-smoking students. So it can be concluded that the VO2Max level of non-smoking extracurricular sports students is better than smokers' extracurricular sports students. So it can be said that each student has a different VO2Max level.

Effect of Verbal Encouragement on Performance and Affective Responses in Male Sport Science Students during Sprint Modalities.

This investigation aimed to examine the effect of verbal encouragement teacher to student (VETS) versus verbal encouragement student to student (VESS) on physical performance and affective responses during different modalities of sprint tests in active male students. In a randomized crossover design, twenty-two male sport science students (age: 21 ± 1.2 years, body height: 1.77 ± 0.3 m, body mass: 76.6 ± 2.1 kg, BMI: 22.9 ± 1.3 kg·m-2) performed linear and change-of-direction sprint tests under one of three conditions: (1) VETS; (2) VETS; (3) no verbal encouragement. In each condition, participants performed the 20 m sprint test, the 10 × 2 sprint test, and the L sprint test. The assessed parameters comprised physical performance, rating of perceived exertion (RPE), and a feeling scale. Post hoc test analysis indicates a significant increase in physical performance during VETS and VESS conditions compared to the control condition due to a decrease in sprint in line 20 m (VETS: p < 0.001, d = 0.55; VESS: p = 0.016, d = 0.41), sprint 10*2 (VETS: p < 0.001, d = 0.64; VESS: p = 0.05, d = 0.36), and sprint L (VETS: p = 0.001, d = 1.19) times compared to the control condition. Moreover, the feeling score was greater after VETS compared to other conditions (p = [<0.001-0.001], d = [0.77-1.18]). In addition, the RPE had no effect on sprint performance between the different conditions. It is indicated that VETS, rather than VESS, is a more significant and effective way to increase effort intensity and positive feelings during sprinting modalities.

Exploring the Potential Benefits of Interventions When Addressing Simulated Altitude Hypoxia during Male Cyclist Sports: A Systematic Review

Training in hypoxic environments enhances endurance, but the various influences of training protocols and supplementation for efficient performance are not yet clear. This systematic review explored the effects of different supplementations and interventions used to optimize the aerobic and anaerobic performance of cyclists. Data were collected from the following sources: PubMed, Google Scholar, EMBASE, WOS, Cochrane Central Register of Controlled Trials, and randomized controlled trials (RCTs). Studies that explored the effects of supplementation or intervention during cycling were selected for analysis. Five studies (67 male cyclists; mean age, 23.74–33.56 years) reported different outcomes from supplementation or intervention during the acute hypoxia of cyclists. Three studies (42 male cyclists; mean age, 25.88–36.22 years) listed the benefits of beetroot juice in preserving SpO2 (pulse oxygen saturation) and enhancing high-intensity endurance performance, effectively preventing the reduction in power output. This systematic review provided evidence that the different effects of ischemic preconditioning (IPC), sildenafil, and beetroot (BR) supplementation and intervention did not present a statistically greater benefit than for normoxia groups, but BR supplementation promoted the benefits of SpO2. Future research should evaluate the duration and higher FiO2 (simulated altitude, hypoxia) levels of hypoxia in training protocols for cyclists. This is important when determining the effectiveness of supplements or interventions in hypoxic conditions and their impact on sports performance, particularly in terms of power output.

Girl Power and Brand Power: Postfeminist Sensibility in News Coverage of Tokyo’s Girl “Prodigy” Skateboarders

This paper analyses news media coverage of the Tokyo 2020 Olympic skateboarding competition, which paid significant and celebratory attention to the extraordinary youth of the medallists in the women’s disciplines. The coverage was marked by a postfeminist sensibility that constituted the girl-child skater via a ubiquitous and enduring girl power discourse, and idealised them as sites of extraordinary feminine capacity. These narratives located girls’ success in their exceptional youth, market potential, and personal agency, reinforcing neoliberal norms which privilege individualism, entrepreneurialism and choice. However, while offering the girl athletes as testaments to feminist progress in a historically male sport and culture, news narratives tended to render girls’ athletic labour virtually invisible and to elide larger issues that may impact women skaters and girl-aged elite athletes. This paper addresses a call for further attention to postfeminist sensibility as it manifests in contemporary media coverage of women’s sport in order to understand the kind of contradictions that can manifest in media narratives that simultaneously celebrate women’s achievements while denying the existence of larger structural issues affecting them. Additionally, it addresses a gap in feminist sport media research that has largely overlooked the girl-child elite athlete.