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Purpose: To compare the effects of 7 weeks of training with different hang-power-clean (HPC) intensities on the maximum dynamic strength, vertical jump, and sprint performance of female handball players. Methods: Professional handball athletes with at least 1 year of HPC experience volunteered to participate. The athletes were balanced by position and randomly assigned to a group with HPC at 90% (HPC90%) or 50% (HPC50%) of HPC 1-repetition maximum (1RM). The training volume was equalized between groups. Pretraining and posttraining assessments included 1RM HPC, jump height in the squat jump (SJ) and countermovement jump (CMJ), and sprint speeds at 5, 20, and 30 m. Results: From pretraining to posttraining, both groups significantly increased (P ≤.05) 1RM HPC, although a small effect size was observed in favor of HPC90%. HPC90% and HPC50% did not induce significant changes (P >.05) in the SJ and CMJ height, although for the SJ, a small effect size was observed in favor of HPC90%. Both groups induced a significant improvement (P ≤.05) in 5-, 20-, and 30-m sprint speeds, although for all speeds, small to moderate effect sizes were observed in favor of HPC90%. Conclusions: Both training groups induced significant improvements in 1RM HPC and sprint speeds, whereas no significant changes were observed in vertical jumps. In addition, based mainly on the effect sizes, the HPC90% group was more effective for increasing 1RM HPC, SJ, and sprint speeds than the HPC50% group. [ABSTRACT FROM AUTHOR]

Purpose: To identify the physical conditioning and functional injury-screening characteristics of elite female soccer players. Methods: This review was prospectively registered (PROSPERO CRD4202346765). Searches were conducted in PubMed/MEDLINE, Cochrane Library, Scopus, and Web of Science (from inception in March 2023 to July 2023). Updated searches were conducted in October 2023 and April 2024. Included studies were quantitative studies conducted on female soccer players. Main outcomes were functional and physical profiles. Screening, data extraction, and quality assessment (Quality Assessment Tool for Quantitative Studies and the Oxford Levels of Evidence scales) were performed. Mean differences between preseason and in-season testing periods were estimated by Hedges g effect size. Methods and results were reported according to PRISMA guidelines. Results: The search yielded 1727 articles, of which 10 were included. Overall methodological quality of the studies was strong, with a moderate level of evidence. Players exhibited mean maximal oxygen uptake of 52.6 (4.5) mL·min−1·kg−1, 20-m linear-sprint performance of 3.58 (0.18) seconds, countermovement jump of 31.0 (2.9) cm, unilateral countermovement jump of 14.4 (2.1) cm, and quadriceps and hamstring peak torque at 60°·s−1 of 133 (23) and 87 (17) N·m, respectively. Mean scores recorded during in-season were 2% to 22% better than in preseason (effect size: small to very large). Conclusions: This review provides valuable normative physical conditioning and functional injury-risk assessment data for elite female soccer players. Coaches and conditioning staff can use these insights to interpret their own records and optimize their training processes. Furthermore, this study identifies methodological limitations to address in future research. [ABSTRACT FROM AUTHOR]

Despite the high prevalence of yips, a psychoneuromuscular impairment affecting fine motor skills in sports performance, the specific aspects of its causality and treatment have not been identified or verified. This cross-sectional study examined psychosocial factors relating to throwing yips in baseball. Amateur baseball players (N = 292) living in Japan completed a self-report questionnaire on their anxiety/fear about throwing the ball, the Acceptance and Action Questionnaire-II, the Cognitive Fusion Questionnaire, the Short Fear of Negative Evaluation Scale, and self-reports evaluating values and social factors relevant to baseball. A hierarchical multiple regression analysis indicated that a low values-based throwing score, a high Cognitive Fusion Questionnaire score, and overreprimanding others' mistakes were positively associated with baseball players' yips symptoms. These results suggest that changing the context of playing baseball, reducing cognitive fusion, and improving coaching methods could reduce the risk of baseball players' throwing yips. [ABSTRACT FROM AUTHOR]

Ski mountaineering sprint competitions are short individual races involving 3 uphill sections (U), 3 transitions (T), and a final descent. To date, relatively little is known about this novel Olympic discipline, and here we examined (1) the contribution of the time spent on U, T, and final descent to overall finishing time and (2) the potential relationships with final ranking. During the different rounds of 2 International Ski Mountaineering Federation World Cup sprint competitions, male and female ski mountaineers were video recorded. Correlation and multiple linear regression analyses were used to investigate the impact of U, T, and final descent on the best overall finishing time. Linear-mixed model analysis was applied to explore potential interactions between section times, rounds, and final ranking. Overall, U (r =.90–.97) and T (r =.57–.89) were closely correlated with the best overall finishing time (all P <.05). U explained approximately 80% to 90% of the variation in the best finishing time for both sexes, with U + T explaining approximately 95% to 98% of this variation. In each successive round, the ski mountaineers eliminated were all slower on U than the Top 3 (all P <.05). The fastest skiers increased their performance on U in the later rounds of the competitions, while those eliminated showed a tendency toward a decrease. Our findings reveal that world-class sprint ski mountaineers conduct transitions optimally and perform effectively uphill. Training for such competitions should aim to improve short supramaximal uphill performance (∼1.5–2.5 min), ensuring that this does not decline with multiple efforts. These insights into ski mountaineering sprint performance are of considerable value in connection with training for the 2026 Winter Olympics. [ABSTRACT FROM AUTHOR]

The aim of the study was to investigate whether a 1-minute high-intensity Re-Warm Up (RWU) protocol on a cycle ergometer could attenuate the negative effects of passive rest on basketball players' performance. Twelve semiprofessional players completed two trials on consecutive days in a counterbalanced, randomized design with repeated measures. Following a structured warm-up (WU), the trials included: a) 15 minutes of passive rest (CON) and b) 13 minutes of passive rest, followed by 1 minute of cycling at 80% VO2max and 1 minute of rest (RWU80). Post-WU and post-RWU measurements included countermovement jump (CMJ), modified agility t-test (MAT), heart rate (HR), body temperature (BT), rating of perceived exertion (RPE), and perceived readiness rating (PRR). CON group showed significant decreases in all variables, while RWU80 attenuated these losses in HR (p = .127), RPE (p = .058) and PRR (p = .236). Between the two post-RWU measurements, the RWU80 showed significantly improved results in MAT (p = .05) and HR (p < .001) and higher RPE (p = .002). Although statistically significant differences did not appear in all variables, the RWU80 led to greater readiness of the substitute players to enter the game com-pared to the 15 minutes of passive rest. [ABSTRACT FROM AUTHOR]

In recent years, the field of wearable sensors has undergone significant evolution, emerging as a pivotal topic of research due to the capacity of such sensors to gather physiological data during various human activities. Transitioning from basic fitness trackers, these sensors are continuously being improved, with the ultimate objective to make compact, sophisticated, highly integrated, and adaptable multi-functional devices that seamlessly connect to clothing or the body, and continuously monitor bodily signals without impeding the wearer's comfort or well-being. Potentiometric sensors, leveraging a range of different solid contact materials, have emerged as a preferred choice for wearable chemical or biological sensors. Nanomaterials play a pivotal role, offering unique properties, such as high conductivity and surface-to-volume ratios. This article provides a review of recent advancements in wearable potentiometric sensors utilizing various solid contacts, with a particular emphasis on nanomaterials. These sensors are employed for precise ion concentration determinations, notably sodium, potassium, calcium, magnesium, ammonium, and chloride, in human biological fluids. This review highlights two primary applications, that is, (1) the enhancement of athletic performance by continuous monitoring of ion levels in sweat to gauge the athlete's health status, and (2) the facilitation of clinical diagnosis and preventive healthcare by monitoring the health status of patients, in particular to detect early signs of dehydration, fatigue, and muscle spasms. [ABSTRACT FROM AUTHOR]

This study aimed to determine the extent to which explosive and reactive strength of the lower limbs, as well as acceleration in running and skating speed, predict figure skating competition results in youth skaters. Talented figure skaters aged 8 to 16 years (n = 211) were divided into two groups: Group 1 (basic novice; age: 10.38 ± 1.10 yrs., height: 1.3889 ± 0.07.26 m, weight: 32.75 ± 4.63 kg) and Group 2 (advanced novice and junior; age: 13.02 ± 1.06 yrs., height: 1.527 ± 0.0818 m, weight: 42.73 ± 7.62 kg). Fifteen variables of physical fitness were measured using tests such as repeated vertical jump, standing long jump, triple jump (right/left leg), 15 m running sprint, and 15 m skating sprint. The competition results were recorded according to the International Skating Union Code of Points. The principal component analysis reduced the fifteen variables to four principal components, explaining 84–87% of the variance. Linear regression models showed that these components significantly explained the variability in the competition scores for both groups. For Group 1, R2 ranged from 0.298 to 0.425, while for Group 2, it ranged from 0.086 to 0.237. Pearson's R was higher for the mean best score of the season than for the National Championship score. The relative importance of these factors varied across age groups. These findings highlight the need for tailored on- and off-ice training that focuses on locomotion and acceleration for younger skaters and dynamic jump training for older skaters. [ABSTRACT FROM AUTHOR]

Purpose: This narrative umbrella review evaluates the efficacy of recovery strategies for elite winter sports athletes by comparing their scientific and clinical validity. It aims to provide evidence-based recommendations for coaches and athletes, preparing them for the Milano-Cortina 2026 Olympic Games through a critical evaluation of various post-training and competition recovery methods. Methods: This narrative umbrella review involved a systematic literature search on PubMed, focusing on recent meta-analyses and review articles related to recovery strategies. Special emphasis was placed on their practical applications to ensure the findings are relevant to real-world settings. Results: The study examined multiple recovery strategies, including sleep, nutrition, and physical methods, revealing a general scarcity of high-quality studies and insufficient control over placebo effects. A key finding emphasizes the crucial roles of nutrition and sleep in the recovery process, highlighting the need for personalized recovery plans tailored to the athlete's and sport's specific demands. The effectiveness of physical recovery methods varied, with some demonstrating significant benefits in specific contexts (e.g., massage and cold-water immersion to alleviate muscle pain and fatigue), whereas others (e.g., stretching and sauna) lacked robust evidence of their efficacy as recovery methods. Conclusion: This paper presents recommendations for optimizing recovery strategies in elite winter sports, focusing on the specific demands of the Milano-Cortina 2026 Olympic Games. It provides a framework for athletes and coaches aiming to enhance performance recovery and achieve optimal athletic condition. [ABSTRACT FROM AUTHOR]

The individual determination of force-velocity and power-velocity profiles during sprint is of great interest to coaches and sports physiotherapists. As a very short action, sprint evaluation requires a sufficiently accurate and reliable system. The aim of this study was to analyze the reliability of the free software Kinovea®, compared to the MySprint App (Apple Inc, USA). Thirty-one soccer players were evaluated and a comparative study was carried out, where 62 sprints of 30-m were analyzed by two rates: experienced and non-experienced. Vertical poles were placed at 2.5, 5, 7.5, 10, 15, 20, 25 and 30 m. All the sprints were recorded in slow motion and HD image quality. Comparisons of partial and total times were made, in addition to force, velocity and power outputs. No differences were shown between the two measurement methods for the different sprint times (ICC = 0.676–0.941, P < 0.001). The intra-rater reliability of total time in the experienced rater was almost perfect: ICC = 0.993 for Kinovea and 0.984 for the MySprint app; the intra-rater reliability for non-experienced one was 0.833 for Kinovea and 0.862 for the MySprint app. Comparing both methods, the ICC was 0.896. There were no significant differences between the variables force, velocity and power (P > 0.05). This study shows that Kinovea + Excel spreadsheet is a reliable method, also an accessible and low-cost option for sport professionals. However, experience using the software is required, but not for the use of the MySprint app, which is an advantage for non-experienced testers. [ABSTRACT FROM AUTHOR]

Athletes continuously seek out creative methods and technologies to improve their physical fitness and overall performance. Wearable technology's progress offers a swift and eco‐conscious way to consistently observe physiological changes evidenced by biomarkers, stemming from an athlete's internal exertion or external workload. However, there is still a long distance to further understand the internal physiology of athletes which may bring hope to tailor training and recovery programs individually. The ongoing challenges faced by sports healthcare personnel are in finding biomarkers safely and continuously to control athletes' physical condition and tailor their recovery and eating patterns. The summary of this review encompasses the development of flexible and wearable electrochemical sensors. This article provides an overview of biofluids, commonly detected by wearable biochemical sensors and their mutual anatomical formations, with a focus on sweat and its associated biomarkers. Following this, its real‐world application in sports medicine becomes apparent, both theoretically and potentially. The paper ends by highlighting challenges and imagining the possible development of this exciting emerging field. [ABSTRACT FROM AUTHOR]

Background/Objectives: The PPARGC1A gene, encoding the PGC-1α protein, is a critical regulator of energy metabolism, influencing mitochondrial biogenesis, fatty acid oxidation, and carbohydrate metabolism. This narrative review aims to evaluate the role of the PPARGC1A gene, with a specific focus on the c.1444G

Background/Objectives: The triple jump is included in the Paralympic Athletics competition. The aim of the research was to examine the relationship of the phase ratios and the inter-limb asymmetry in the spatiotemporal parameters of the approach run in Paralympic and international-level Class T46/T47 triple jumpers. Methods: Eleven Class T46/T47 male athletes were recorded during the examined competitions. Step length (SL), frequency (SF), and average velocity (ASV) for the late approach run as well as the length and the percentage distribution of each jumping phase (hop, step, jump) were measured using a panning video analysis method. The inter-limb asymmetry was estimated using the symmetry angle. Results: No significant inter-limb asymmetry was found (p > 0.05). In addition, SL, SF, and ASV were not different (p > 0.05) between the steps initiated from the ipsilateral and the contralateral leg regarding the impaired arm. However, the direction of asymmetry for SF was towards the ipsilateral leg to the impaired arm in the majority of the examined athletes. The maximum speed of the approach was correlated with the triple jump distance and the magnitude of asymmetry for AVS was correlated with the vertical take-off velocity and angle for the step. Conclusions: Since the distance of the triple jump related with the peak approach speed added the negative correlation of peak approach speed with the magnitude of the symmetry angle for SL, it is suggested to minimize the asymmetries in the step characteristics during the approach run to improve triple jump performance in Class T46/T47 jumpers. [ABSTRACT FROM AUTHOR]

It has been found that the way high-performance coaches lead influences both athletes' performance and mental health. However, limited research exists on the Social Identity Approach to leadership in elite sports, despite growing interest in coaching science regarding interpersonal behaviours and leadership. This study investigates the empirical links between coaches' leadership, sport performance and mental health from a social identity approach. One hundred and forty-five elite athletes (Mage = 20.6 years; SD = 4.1; 62% women, 38% men) answered questionnaires measuring coaches' social identity leadership, sport performance satisfaction and mental health. The overall structural equation model (SEM) accounted for 36% and 19% of the variances in athletes' mental health and mental illness dimensions, respectively. There was a positive association between perceived coaches' social identity leadership and sport performance satisfaction, explaining 10% of its variance. Coaches' social identity leadership predicted athletes' mental health but not mental illness. Sport performance satisfaction positively influenced mental health and negatively impacted mental illness. Fostering a sense of "we" and "us" within elite sport training groups is instrumental in promoting sport performance satisfaction and, consequently, enhancing the mental health of athletes. Coaching educational courses may benefit from social identity leadership in interpersonal behaviours. [ABSTRACT FROM AUTHOR]

Mental fatigue (MF) can impair cognitive and physical performance in sport. We tested the hypothesis that a shorter adaptive Time Load Dual Back (TLDB) task induces MF faster than a longer Stroop; and subsequently impairs cognitive and intermittent running performance. This study employed a randomized within-participant design. 25 trained individuals performed a Yo-Yo test after one of four experimental conditions (30-min Stroop, 20-min and 10-min TLDB tasks, and active control). Cognitive performance was assessed using the Psychomotor Vigilance Task (PVT) before and after the experimental conditions. Measures of mood, workload, MF, RPE, heart rate (HR), heart rate variability (HRV) and blood lactate were collected. ANOVAs determined the effect of the 4 conditions. Stroop and 20-min TLDB conditions impaired running performance similarly (p =.015), while no differences are reported for 10-min TLDB and Control. No significant differences in physiological parameters were reported during the Yo-Yo test although RPE was significantly higher in the Stroop and 20-min TLDB conditions (p =.014). Stroop and both TLDBs conditions impaired PVT's cognitive performance (p =.029), MF (p =.012), mental demand (p <.001), HR (p =.021) and HRV (p =.033); with 20-min TLDB task having the higher significant impact. Mood alterations were similar between Stroop and TLDB conditions. Intermittent running (Yo-Yo) and cognitive (PVT) performances, and subjective ratings were impaired by 30-min Stroop and 20-min TLDB tasks; while 10-min TLDB did not to impair performance. Shorter adaptive modes seem to be more effective in inducing MF and could have relevant clinical applications to assess conditions such as traumatic brain injury and concussion. [ABSTRACT FROM AUTHOR]

Background: Research into key performance factors in trail running, particularly in vertical kilometer (VK) races, is crucial for effective training and periodization. However, recent studies on metabolic and cardiorespiratory responses during VK races, especially using field tests, are limited. Objectives: Therefore, the aim of this study is to evaluate the metabolic and cardiorespiratory responses during a VK field test, identifying differences based on sex and performance level, as well as key performance factors and their deterioration due to fatigue. Fifteen trained trail runners (ten males and five females, 19 to 38 years old) perform a VK race. Methods: The global physiological response is evaluated using the portable gas analyzer Cosmed K5 and the local response using near-infrared spectroscopy technology. Results: In gender comparisons, the ANCOVA test shows significant differences (p < 0.05) in the ventilation, tidal volume, expiratory time-to-inspiratory time ratio, inspiratory flow rate, end-tidal CO2 partial pressure, heart rate, oxygen pulse, and total hemoglobin. Additionally, the performance comparison reveals significant differences in the variables' velocity, oxygen consumption, carbon dioxide production, ventilation, dead space-to-tidal volume ratio, total time of the breathing cycle, expiratory time-to-inspiratory time ratio, inspiratory duty cycle, expiratory fractions of CO2, quadriceps saturation index, and VE/VCO2 ratio. Finally, the correlation analysis shows oxygen consumption (r = −0.80 mean; r = −0.72 peak), carbon dioxide production (r = −0.91 mean; r = −0.75 peak), expiratory time-to-inspiratory time ratio (r = 0.68 peak), ventilation (r = −0.58 mean), and quadriceps saturation index (r = 0.54 mean; r = −0.76 coefficient of variation) as the key performance factors in the VK race. Conclusions: Overall, the physiological analysis indicates the importance of local muscular adaptations and respiratory system capacity in this type of short-duration race. [ABSTRACT FROM AUTHOR]

Background/Objectives: Low-level laser therapy (LLLT) has gained traction in sports and exercise medicine as a non-invasive therapeutic for preconditioning the body, exertion recovery, repair and injury rehabilitation. LLLT is hypothesized to modulate cellular metabolism, tissue microenvironment(s) and to decrease inflammation while posing few adverse risks. This review critically examines the evidence-base for LLLT effectiveness focusing on immediate care settings and acute/subacute applications (<6 months post-injury). Methods: A comprehensive literature search was conducted, prioritizing systematic reviews, meta-analyses and their primary research papers. Results: Findings are relevant to trainers and athletes as they manage a wide range of issues from superficial abrasions to deeper tissue concerns. LLLT parameters in the research literature include wide ranges. For body surface structures, studies show that LLLT holds promise in accelerating wound healing. In sport performance studies, LLLT is typically delivered pre-exercise and reveals beneficial effects on exertion recovery, improvements in muscle strength, endurance and reduced fatigue. Evidence is less convincing for acute, deep tissue injury models, where most studies do not report significant benefits for functional outcomes over conventional therapeutic modalities. Conclusions: Variability in LLLT delivery parameters and findings across studies underscores a need for clear treatment guidelines for the profession. Technical properties of laser light delivery to the body also differ materially from LED devices. Sport physiotherapists, team physicians, trainers and athletes should understand limitations in the current evidence-base informing photobiomodulation use in high-performance sport settings and weigh potential benefits versus shortcomings of LLLT use in the mentioned therapeutic contexts. [ABSTRACT FROM AUTHOR]

Chronic consumption of energy drinks and caffeine-containing products can affect the metabolic system and lead to major nutritional imbalances, as well as hormonal imbalances. The whole organism needs significant adaptation in order to maintain the homeostatic balance following consumption and addictions of this kind. We are presenting a study case conducted in June 2024, at the TOPMED Medical Center of Târgu-Mureș city, having a male subject, aged 17 years old, who was checked in at our clinic for psychological evaluation in order to obtain a driving license. Along with other lifestyle components, we relied on the estimation of the consumption of energizing substances in association with functional, biochemical, psychological and nutritional parameters, followed by interventional measures. We support the importance of interventions to reduce adolescents’ access to these substances, which through excessive consumption can harm good physical and emotional development. [ABSTRACT FROM AUTHOR]

This study verified the relationship between internal load (IL) and external load (EL) and their association on injury risk (IR) prediction considering machine learning (ML) approaches. Studies were included if: (1) participants were male professional soccer players; (2) carried out for at least 2 sessions, exercises, or competitions; (3) correlated training load (TL) with non-contact injuries; (4) applied ML approaches to predict TL and non-contact injuries. TL included: IL indicators (Rating of Perceived Exertion, RPE; Session-RPE, Heart Rate, HR) and EL indicators (Global Positioning System, GPS variables); the relationship between EL and IL through index, ratio, formula; ML indicators included performance measures, predictive performance of ML methods, measure of feature importance, relevant predictors, outcome variable, predictor variable, data pre-processing, features selection, ML methods. Twenty-five studies were included. Eleven addressed the relationship between EL and IL. Five used EL/IL indexes. Five studies predicted IL indicators. Three studies investigated the association between EL and IL with IR. One study predicted IR using ML. Significant positive correlations were found between S-RPE and total distance (TD) (r = 0.73; 95% CI (0.64 to 0.82)) as well as between S-RPE and player load (PL) (r = 0.76; 95% CI (0.68 to 0.84)). Association between IL and EL and their relationship with injuries were found. RPE, S-RPE, and HR were associated with different EL indicators. A positive relationship between EL and IL indicators and IR was also observed. Moreover, new indexes or ratios (integrating EL and IL) to improve knowledge regarding TL and fitness status were also applied. ML can predict IL indicators (HR and RPE), and IR. The present systematic review was registered in PROSPERO (CRD42021245312). [ABSTRACT FROM AUTHOR]

This study compared changes in the energy-time profiles in pole vaulting using several body models. Two-dimensional kinematics were collected from 20 successful vaults (5.20–6.01 m) performed by 10 athletes during a national meet. The linear and angular kinetic, potential, and total mechanical energy-time profiles were obtained from three pole vaulter models composed of 12, 5, and 3 segments (M12, M5, and M3, respectively), as well as calculated and approximated centre of mass models. One-dimensional statistical parametric mapping was used to compare these energy-time profiles from the models, while agreements of discrete energy parameters were assessed. For all the studied energy-time profiles, there was a main effect (0.05 < p < 0.001) of the models, but pairwise comparisons showed that M5 presented the lowest differences with M12 in comparison with the other models (M3 and approximated centre of mass models). In addition, M5 showed better agreement (lower bias and small effect size) with M12 for the studied energy parameters compared to the other models. Therefore, M5 may be a reliable option to simplify the body model and speed up the computation of the energy-time profiles of the pole vaulter. [ABSTRACT FROM AUTHOR]

The skeletal muscle capillary supply mainly determines the highest exercise capacity. Vascular endothelial growth factor (VEGF) is the major growth factor during the angiogenesis process. Therefore, we aimed to investigate whether the VEGF insertion/deletion (I/D) variant differs between athletes and sedentary controls in the Turkish population. Three hundred sixteen subjects, including 146 athletes from different branches and 170 sedentary people, voluntarily participated in this study. Genomic DNA was isolated and genotyped using polymerase chain reaction (PCR) analysis for the VEGF I/D variant. The results were evaluated statistically. In this study, the athletes and the controls showed a statistically significant difference in the genotype and allele distribution of the VEGF I/D variant. The athletes had a more prevalent D allele and D/D genotype than the controls (p = 0.008 and p = 0.034, respectively). There was a statistically significant association between the patients and the controls in terms of D/D vs. I/I + I/D genotypes (p = 0.018). There was no significant difference in VEGF I/D genotype distribution according to sports branches. Athletic performance is a complex trait influenced by genetic and environmental factors. As far as we know, this is the first study to evaluate the VEGF I/D variant in athletes in Turkey. According to our results in this study, we concluded that the VEGF I/D variant, D/D genotype, and D allele are associated with sport performance in the Turkish population. However, there is a need for studies with large samples in which environmental and emotional factors will also be taken into account. [ABSTRACT FROM AUTHOR]

Athletes frequently compete only a few days after long‐haul travel. Longitudinal real‐world data on athletes’ sleep and sleep–wake cycle in competitive settings remain scarce. This study assessed the impact of a long‐haul travel across ∼13 time zones on sleep patterns, rest–activity circadian rhythms (RAR), and their subsequent effects on neuromuscular function and race performance in the Canadian Short‐Track Speed Skating Team. Nineteen athletes (24 ± 4 years, 11 women) travelled from Montréal (UTC‐5) to Asia (UTC+8, UTC+9) for World Cup races between 2017 and 2019. Actigraphy data were collected before (Baseline) and during travel, during the stay in Asia (SIA), and during competition days. RAR were computed using cosinor analyses on accelerometry data with 24 h phase periods. Countermovement jump height (CMJ) was measured in a subsample (n = 10). Compared to baseline (7:08 ± 0:53), athletes obtained less sleep during travel (6:16 ± 1:27) and competition days (6:35 ± 1:10), and more during SIA (7:32 ± 0:46; time effect P < 0.0001). Sleep efficiency and CMJ were greater in SIA than baseline (P = 0.007 and P = 0.0004, respectively). During SIA, sleep time increased by 9 min per night until the fifth day (P < 0.0001), with a slight decrease in sleep efficiency (P = 0.005) and an increase in CMJ (P < 0.0001). For RAR, mean activity peaked on day 2, shifting from late evening to ∼15:00. Race performance was not different from other races of the same season (P > 0.254). Our results demonstrated that, despite the possible sleep debt from the long‐haul travel, athletes recovered within 5 days, highlighting their adaptability to manage sleep debt and jetlag without impacting competitive outcomes. [ABSTRACT FROM AUTHOR]

Mental fatigue shows consistent detrimental effects on physically-demanding tasks including running and muscular endurance tasks. Several strategies to mitigate these effects have been assessed; however, it is also important to explore factors that may combine with mental fatigue to amplify performance decrements. The present study investigated potential moderating effects of attentional focus on the mental fatigue – endurance performance relationship. Undergraduates (N = 78) completed two wall-sit tasks to volitional failure prior to, and following, a cognitive task. Using a 2 X 2 randomised factorial design, half the participants completed a mentally fatiguing cognitive task (incongruent Stroop; HF), while the other half performed a non-mentally fatiguing task (documentary viewing; LF). Prior to the second wall-sit task, half the participants in each of the HF and LF groups were given attentional focus instructions to focus internally (INT) and the other half to focus externally (EXT). Both the mental fatigue (p <.001) and attentional focus (p <.001) manipulations were found to be successful. Planned comparisons showed no significant effects of attentional focus or mental fatigue on wall-sit endurance performance. However, a large effect size was observed between the HF/INT group and the other three groups (d = −1.56). Overall, data indicate a potential moderating effect of attentional focus such that internal focus and high mental fatigue may combine to have detrimental effects on physical endurance performance. [ABSTRACT FROM AUTHOR]

Research has attested to the importance of three lower-order executive functions (EFs; inhibition, shifting, and updating) and visual attention (VA) for sport performance. However, there is limited research examining the association between EF and VA in sport. The present study systematically reviewed literature from Web of Science, Scopus, MEDLINE, APA PsycInfo, PubMed, SPORTDiscus, CINAHL, and Discover EBSCO that examined both EF and VA in sport following PRISMA guidelines. Experiments that were full-texts published in English, contained original data, quantitatively measured EF and VA, and allowed for direct or inferred comments on the relationship between EF and VA were eligible for inclusion. Twenty-two experiments met the inclusion criteria. Results showed large discrepancies in the labelling of sporting expertise, that EF outcomes typically focus on response accuracy over response time, and that quiet eye and number and duration of fixations are popular VA variables. Though limited, studies comparing EF and VA directly indicated a positive relationship suggesting an important link between the two. In sum, more direct assessments of the association between EF and VA are needed to understand their respective and joint contribution to sport performance. [ABSTRACT FROM AUTHOR]

Background: Upper extremity (UE) dynamic balance is a significant physical fitness ability, which includes high-level neuromuscular proprioception, joint mobility, force, and coordination. The evaluation methods of UE dynamic balance are insufficient and lack experimental support. The Star Excursion Balance Test (SEBT) is a reliable assessment of dynamic balance and injury risk of the lower extremity. Hypothesis: The UE-SEBT is a reliable and reproducible approach for evaluating dynamic balance of UEs. Study Design: Observational study. Level of Evidence: Level 4. Methods: This cross-sectional study recruited 65 healthy adults. All participants were required to complete UE-SEBT, UE Y-balance test (UE-YBT), maximal voluntary isometric contraction (MVIC) of UE, closed kinetic chain UE stability test (CKCUEST), trunk flexor endurance test (TFET), trunk extensor endurance test (TEET), and lateral trunk endurance test (LTET). Intra- and inter-rater reliability and the correlation of UE-SEBT with other outcomes were measured. Results: Among the participants, the intra- and interoperator reliability of UE-SEBT in all directions and composite score achieved a moderate-to-excellent (intraclass correlation coefficients [ICC], 0.729-0.946) reliability. For validity, the UE-SEBT had a moderate to very strong correlation with UE-YBT (r = 0.315-0.755, P < 0.01) and a strong correlation with CKCUEST (r = 0.4-0.67, P < 0.01). Furthermore, the UE-SEBT performance showed weak-to-strong correlations with MVIC (r = 0.26-0.43, P < 0.05). UE-SEBT was also correlated with LTET, TEET, and TFET to varying degrees. Conclusion: UE-SEBT has good reliability and validity to assess UE dynamic balance compared with other tests. Clinical Relevance: UE-SEBT can be used as a clinical assessment method to evaluate UE dynamic balance and injury prevention. [ABSTRACT FROM AUTHOR]

Copyright of Retos: Nuevas Perspectivas de Educación Física, Deporte y Recreación is the property of Federacion Espanola de Asociaciones de Docentes de Educacion Fisica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Retos: Nuevas Perspectivas de Educación Física, Deporte y Recreación is the property of Federacion Espanola de Asociaciones de Docentes de Educacion Fisica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Académica Internacional de Educación Física is the property of Asociacion Cientifica Internacional de Educacion Fisica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Purpose: There has been a proliferation in technologies in the sport performance environment that collect increasingly larger quantities of athlete data. These data have the potential to be personal, sensitive, and revealing and raise privacy and confidentiality concerns. A solution may be the use of synthetic data, which mimic the properties of the original data. The aim of this study was to provide examples of synthetic data generation to demonstrate its practical use and to deploy a freely available web-based R Shiny application to generate synthetic data. Methods: Openly available data from 2 previously published studies were obtained, representing typical data sets of (1) field- and gym-based team-sport external and internal load during a preseason period (n = 28) and (2) performance and subjective changes from before to after the posttraining intervention (n = 22). Synthetic data were generated using the synthpop package in R Studio software, and comparisons between the original and synthetic data sets were made through Welch t tests and the distributional similarity standardized propensity mean squared error statistic. Results: There were no significant differences between the original and more synthetic data sets across all variables examined in both data sets (P >.05). Further, there was distributional similarity (ie, low standardized propensity mean squared error) between the original observed and synthetic data sets. Conclusions: These findings highlight the potential use of synthetic data as a practical solution to privacy and confidentiality issues. Synthetic data can unlock previously inaccessible data sets for exploratory analysis and facilitate multiteam or multicenter collaborations. Interested sport scientists, practitioners, and researchers should consider utilizing the shiny web application (SYNTHETIC DATA—available at https://assetlab.shinyapps.io/SyntheticData/). [ABSTRACT FROM AUTHOR]

The current study examines the relationships between hitters' neural activity and their in-game hitting performance. Collegiate baseball players completed a computerized video task assessing whether thrown pitches were balls or strikes while their neural activity was recorded. In addition, each player's hitting statistics were collected for the following baseball season. Results showed that neural activity during the computerized task was associated with in-game hitting performance, even after accounting for other individual difference variables. These findings indicate that players' neural activity measured in a laboratory environment shows a translational relationship with in-game hitting performance over time. Neural activity provides a more objective analysis of players' ongoing self-regulatory processes during hitting and a better understanding of the cognitive processes associated with hitting performance. Self-regulatory cognitive control is adaptable and trainable, and this research advances the measurement of cognitive variables related with in-game hitting performance in baseball. [ABSTRACT FROM AUTHOR]

The aim of this study was to explore the effects of mental fatigue from smartphone use and Stroop task on bench press force–velocity (F-V) profile, one-repetition maximum (1RM), and countermovement jump (CMJ) performance. Twenty-five trained subjects (age = 25.8 ± 5.7 years) completed three sessions separated by 1 week following a randomized double-blinded crossover design. Each session consisted of F-V relationship, 1RM, and CMJ measurements after performing 30 min of control, social media, or Stroop task. Perceived mental fatigue and motivation were recorded. Mental fatigue, motivation, CMJ height, bench press 1RM, and F-V profile variables (maximal force, maximal velocity, and maximal power) were compared between interventions. Significant differences were found for mental fatigue between interventions (p ≤.001). Both ST (p ≤.001) and SM (p =.007) induced higher mental fatigue than control. However, no significant differences between interventions were observed for any other variable (p =.056–.723). The magnitude of the differences between interventions ranged from negligible to small (effect sizes ≤ 0.24). These results suggest that although both ST and SM were effective to induce mental fatigue, neither ST nor SM affected CMJ performance, bench press 1RM, or any variable of the F-V profile compared with the control task. [ABSTRACT FROM AUTHOR]

Purpose: The purpose of this study was to explore whether offset loading in the barbell squat altered ground-reaction force (GRF) and muscle activation in the dominant (D) and nondominant (ND) lower limb compared to traditional squats. Methods: Twelve well-trained men (age 26.4 [3.2] y; 10.3 [1.9] y experience) performed 3 sets of 10 repetitions at 60% of their previously measured 1-repetition maximum. Sets were quasi-randomized between traditional loading (TDL), dominant-side offset loading (OS-D), and nondominant-side offset loading (OS-ND). All repetitions were performed on a dual force plate with electromyography sensors on the prime mover muscles of the squat. GRF symmetry was assessed using the symmetry index (SI) to determine the direction (D [+] or ND [−]) and magnitude (%) of the asymmetry. Finally, the first 3 and final 3 repetitions of each set were compared for compensatory changes in symmetry. Results: OS-D induced a significant change in limb SI relative to TDL (5.21% vs 1.44%; P =.011); however, no significant difference in limb SI was seen between TDL and OS-ND (−0.66% vs 1.44%; P =.278). No asymmetries between D and ND muscle activation were present in any condition. TDL and OS-D squats exhibited significant improvements in limb SI between the first 3 and final 3 repetitions (P =.035 and.011, respectively); however, no such improvement was seen in OS-ND. Conclusions: OS-D is capable of significantly altering GRF limb SI in a bilateral squat; however, OS-ND appears to exhibit no GRF or electromyography effects relative to TDL. Thus, the results of this study do not support the use of OS-ND in the pursuit of strengthening a weaker limb, suggesting that unilateral training may be a preferred mode of exercise for this desired outcome. [ABSTRACT FROM AUTHOR]

Purpose: Mental fatigue (MF) can impair physical performance in sport. We tested the hypothesis that cognitive load alone, and intermixed with standard resistance training, would induce MF, increase rating of perceived exertion (RPE), alter perception of weight lifting and training, and impair cycling time-trial performance. Methods: This 2-part study employed a within-participant design. In part 1, after establishing leg-extension 1-repetition maximum (1RM), 16 participants lifted and briefly held weights at 20%, 40%, 60%, and 80% of 1RM. RPE and electromyography (EMG) were measured for each lift. During the testing sessions, participants completed cognitive tasks (MF condition) or watched neutral videos (control condition) for 90 minutes before lifting the weights. In part 2, they completed submaximal resistance training comprising 6 weight training exercises followed by a 20-minute cycling time trial. In the MF condition, they completed cognitive tasks before and between weight training exercises. In the control condition, they watched neutral videos. Mood (Brunel Mood Scale), workload (National Aeronautics and Space Administration Task Load Index), MF-visual analogue scale (MF-VAS), RPE, psychomotor vigilance, distance cycled, power output, heart rate, and blood lactate were measured. Results: In part 1, the cognitive task increased lift-induced RPE (P =.011), increased MF-VAS (P =.002), and altered mood (P <.001) compared with control. EMG did not differ between conditions. In part 2, the cognitive tasks increased RPE (P <.001), MF-VAS (P <.001), and mental workload (P <.001), but reduced cycling time-trial power (P =.032) and distance (P =.023) compared with control. Heart rate and blood lactate did not differ between conditions. Conclusion: A state of MF induced by cognitive load, alone or intermixed with physical load, increased RPE during weight lifting and training and impaired subsequent cycling performance. [ABSTRACT FROM AUTHOR]

OBJECTIVE: The effect of post-activation potentiation on sports performance is characterized by increased muscle mobility and increased rate of muscle force generation. In this paper, Meta-analysis is used to quantitatively evaluate the effects of post-activation potentiation on sprint speed, jumping performance, and kinetic parameters (peak impulse, peak power, maximum ground reaction force, rate of force generation, etc.) after activation of relative strength levels in the lower limbs. METHODS: Electronic databases such as CNKI, WanFang, Web of Science, PubMed, and Medline were retrieved for randomized control, random crossover, or clear grouping according to the relative strength levels of the lower limbs (non-randomized controls) on the post-activation potentiation effect after activation induced by the relative strength level of the lower limbs. Free weight equipment and rapid telescopic compound exercises were used as main intervention methods in each group. The publication time of the literature was from the inception of each database until August 5, 2023. Endnote software was used to manage the literature. Literature quality assessment was conducted using the PEDro scale for randomized controlled trials and ROBINS-I 2.0 standards for nonrandomized controlled trials. Revman5.4 and Stata15.0 software were used to conduct publication bias evaluation, subgroup analysis and sensitivity analysis of the extracted data, and forest plots were produced for Meta-analysis. RESULTS: Eleven documents (seven randomized controlled trials and four non-randomized controlled trials) were finally included, including 216 subjects. Overall, the methodological quality of the literature was high. According to the grouping standard of 1-repetition maximum/body mass > 2 for the strong group and 1-repetition maximum/body mass ≤ 2 for the normal group, there were 99 subjects in the strong group and 117 subjects in the normal group, all of whom were male. The positive effect of post-activation potentiation on sprint performance in the strong group was significantly higher than that in the normal group [standardized mean difference (SMD)=-1.34, 95% confidence interval (CI): -1.74 to -0.93, P < 0.000 01]; the positive effect of post-activation potentiation on vertical jump height showed no significant difference between the strong and normal group (SMD=0.30, 95% CI: -0.07 to 0.66, P=0.11); the positive effect of post-activation potentiation showed no significant difference between the strong and normal groups in terms of peak impulse (SMD=-0.07, 95% CI:-0.62 to 0.47, P=0.61], peak power (SMD=0.21, 95% CI:-0.29 to 0.72, P=0.12), maximum ground reaction force (SMD=0.31, 95% CI: -0.20 to 0.81, P=0.16) and force generation rate (SMD=0.36, 95% CI: -0.11 to 0.82, P=0.39). CONCLUSION: The post-activation potentiation effect in the strong group can significantly increase the short-distance sprint speed. The potentiation effect after activation of the relative strength level of the lower limbs has similar effects on the kinematic and kinetic parameters, including explosive vertical jump height, peak impulse, peak power, maximum ground reaction force and force generation rate. [ABSTRACT FROM AUTHOR]

In freediving, divers rely solely on a single breath. The duration of apnoea depends on the oxygen reserves, mostly derived from the air trapped in the lungs and airways. It is necessary to investigate whether erythrocyte and haemoglobin levels correlate with the achievable apnoea duration, considering their roles as oxygen binders and carriers in the blood. This study examines the correlation between erythrocyte and haemoglobin levels and apnoea duration in 12 sedentary males. Erythrocyte and haemoglobin levels were assessed through blood sample examination in a clinical laboratory by professional personnel, while apnoea duration was measured by remaining motionless in a swimming pool at a depth of 0.5 meters, with three measurements taken. Normality test results indicated that all data were normally distributed (p > .05). Pearson correlation test results revealed no correlation between apnoea duration and erythrocyte levels, haemoglobin, or haematocrit (p > .05). From the research findings, it can be assumed that these three blood biochemical variables cannot be categorized as oxygen reserves and only function as oxygen transportation media. [ABSTRACT FROM AUTHOR]

Featured Application: This study suggests that the force–velocity profile conceived by Bosco could be a useful, easy-to-apply assessment method of athletes' level of performance. Furthermore, the control of the step length and step frequency enables coaches and athletes to develop RSA training with a more specific focus based on the specific improvement needs (e.g., wicket run). This study aimed to compare two female field hockey teams of different competitive levels by analyzing kinematic variables in repeated sprint ability (RSA) tests and the force-velocity profile (FVP). Twenty-five female hockey players representing the elite and subelite levels from the same club volunteered to participate. The RSA protocol included six 30 m maximal sprints with a 30 s recovery. Kinematic variables, such as sprint time, step frequency, and step length, were analyzed for each sprint. Additionally, players performed counter-movement jumps (CMJs) and CMJs with 50% body weight (CMJ50s) to calculate the FV50 using the Bosco Index. The elite players showed better (≈2%; p < 0.05) fatigue indexes in sprint time (0–30 m and 0–10 m sections), step length (0–10 m, 10–20 m, and 20–30 m sections), and step frequency (20–30 m section) during the RSA test, as well as greater values (>10%; p < 0.05) in the CMJ50 and FV50 tests. In addition, these RSA (sprint time, step frequency, and step length) and jumping (CMJ, CMJ50, and FV50) variables showed a moderate, significant, or very significant relationship with each other. Therefore, it seems that both strength and speed capacities can be used either in conjunction or as a complementary approach to enhance the overall RSA performance. [ABSTRACT FROM AUTHOR]

In the past 20 years, surfing has become a popular, non–age-dependent sport that can be performed at most ocean beaches. As it gains exposure, surfers have recognized the importance of physical preparation to enhance their performance and reduce injury risk. This realization has led to an increase in the study and practice of biomechanical and environmental analysis as well as training methodologies for the competitive surfer. As a result, coaches and athletes are including land-based training protocols to maximize the competitive surfer’s performance and are designing them based on their surfing schedules. Not only is this training important for competitive surfers, but also for surfers who engage in this sport recreationally. Therefore, the aim was to provide a needs analysis of surfing components such as environmental factors, biomechanical and physiological demands, and current training methods for performance enhancement. [ABSTRACT FROM AUTHOR]

Purpose: High-intensity long-interval training (long-HIIT; interval ≥ 1 min; intensity 85–100% of maximal oxygen uptake [V̇O2max]) is often applied for cardiorespiratory adaptations; however, long-HIIT can also challenge the anaerobic and neuromuscular systems. Therefore, this study aimed to investigate the effects of 4-week long-HIIT (11 sessions) on anaerobic capacity, repeated sprint ability (RSA), and neuromuscular function. Methods: Twenty active men (V̇O2max: 44.8 ± 5.3 mL.kg−1.min−1) performed an incremental running test (TINC), a supramaximal test consisting in running until the task failure at 115% of maximum velocity achieved in TINC (VINC) for anaerobic capacity determination, and an RSA test (2 × 6 × 35-m all-out sprints) pre- and post-HIIT. Before and after RSA, the neuromuscular function was assessed with counter movement jumps (CMJ) and knee extensors maximal isometric voluntary contractions (MVC) with femoral nerve electrical stimulation. Long-HIIT consisted of 10 × 1-min runs at 90% of VINC with 1-min recovery. Results: Long-HIIT induced significant increase in V̇O2max (P = 0.0001). Although anaerobic capacity did not change significantly, 60% of the participants improved above the smallest worthwhile change (0.2 × standard deviation of pre-HIIT). The changes in sprint performance over RSA was significantly less post-HIIT than pre (P = 0.01). RSA induced significant drop of MVC, high frequency doublet, voluntary activation and CMJ performance at pre- and post-HIIT (P < 0.01); however, the percentage of reduction from rest to fatigued conditions were not significantly altered at post-HIIT compared to Pre. Conclusions: 11 sessions of long-HIIT over 4-week improved maximal aerobic power but not anaerobic capacity, and neuromuscular function. Yet, neuromuscular fatigue was similar despite greater speeds reached during RSA. [ABSTRACT FROM AUTHOR]

After decades of research and debates about whether perfectionism is healthy or unhealthy, the Model of Excellencism and Perfectionism (MEP) recently differentiated between people striving for high standards (excellence strivers) and those pursuing perfectionistic standards (perfection strivers). In this study, we devised and tested an interpretational framework of nine scenarios to help determine whether perfectionism is beneficial, unneeded, or harmful by comparing the outcomes of excellence and perfection strivers. In a cross-sectional study with university students (N = 271; Study 1), we found that perfection strivers savor positive school events less and have greater dropout intentions than excellence strivers. In a prospective/longitudinal design with college-aged athletes (N = 296; Study 2), perfectionism was associated with higher athletic achievement. However, perfection strivers who failed to attain their goals experienced lower savoring and enjoyment than excellence strivers. Our findings highlighted the value of our interpretational scenarios as a hub to facilitate the comparison of MEP findings, while showing how to test MEP hypotheses with five popular statistical analyses. Furthermore, the MEP Shiny App is a valuable contribution to expedite the process of comparing the outcomes of excellence and perfection strivers. Overall, this research forged a substantive-methodological pathway that strengthens and enhances the practicality of the MEP. Plain language summary: Many people aspire to achieve excellence without ever trying to attain perfection. Excellence and perfection are different endpoints that set the tone for distinct aiming, striving, phenomenological experiences, and outcomes. A recent theory introduced the concept of excellencism in order to differentiate individuals striving for high yet flexible standards (referred to as excellence strivers) from those who relentlessly and inflexibly chase perfection (known as perfection strivers). In the current research, our overarching goal was to enhance theory with a new framework that would make it easier for researchers to use the Model of Excellencism and Perfectionism (MEP). To achieve our goal, we conducted two studies with cross-sectional and longitudinal methods with university students (Study 1, N = 271) and college-aged athletes (Study 2, N = 296). We created the online MEP Shiny App (https://model-of-excellencism-and-perfectionism.shinyapps.io/Shiny%5fVersion2/) to simplify the process of testing and interpreting the differences between excellence and perfection strivers. Our findings underscored the importance of separating excellencism and perfectionism. In Study 1, perfection strivers savored positive school events less and had greater dropout intentions than excellence strivers. In Study 2, perfectionism was associated with higher goal attainment in sports. However, perfection strivers who failed to attain their goals experienced less savoring and enjoyment than excellence strivers. The positive sports experiences of perfection strivers depended on whether or not they attained their goals. Perfectionism is tricky and can be interpreted as a double-edged sword. It can be seen as beneficial, unneeded, or harmful depending on which outcomes and contexts researchers are looking at. Our findings highlighted the value of our newly proposed interpretational scenarios to make the MEP more accessible to other researchers and practitioners. [ABSTRACT FROM AUTHOR]

The triple jump is a complex athletic event where performance relies on a combination of speed, strength, and advanced technique in executing the three phases that form the biomechanics of the event. Due to the specific forces exerted on the athlete's musculoskeletal system, along with potential weaknesses in physical training, athletes are at risk of injury. This case study presents the original approach used to rehabilitate and prevent new injuries usually experienced by the Romanian athlete G.R.C., a 25-year-old European junior vice-champion in the triple jump. He sought treatment at the MediSport SRL clinic for multiple chronic and acute injuries that were limiting his performance. Comprehensive clinical and functional evaluations revealed all these limitations, prompting an integrated approach to his rehabilitation and training program. After the kinesitherapy program consisting of 18 sessions focused on functional musculoskeletal balancing using an electronic dynamometer, a key component of the BackFix system and method, important improvements were observed in core stability, static balance, and posture. Additionally, muscle strength in the previously deficient areas increased, pain disappeared in all affected regions, and recovery time after competitive effort improved, laying the foundation for optimal performance in the 2024 summer season. The successful use of the BackFix method leads us to recommend it as an alternative to other traditional training and recovery methods, while also encouraging further research into its application in the triple jump and other sports branches. [ABSTRACT FROM AUTHOR]

Copyright of Science of Gymnastics Journal is the property of Science of Gymnastics Journal and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Sportis: Scientific Journal of School Sport, Physical Education & Psychomotricity is the property of Sportis: Scientific Journal of School Sport, Physical Education & Psychomotricity and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Iberoamericana de Ciencias de la Actividad Física y el Deporte is the property of Revista Iberoamericana de Ciencias de la Actividad Física y el Deporte and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Electroencephalographic Neurofeedback Training (EEG NFT) aims to improve sport performance by teaching athletes to control their mental states, leading to better cognitive, emotional, and physical outcomes. The psychomotor efficiency hypothesis suggests that optimizing brain function could enhance athletic ability, indicating the potential of EEG NFT. However, evidence for EEG-NFT's ability to alter critical brain activity patterns, such as sensorimotor rhythm and frontal midline theta--key for concentration and relaxation--is not fully established. Current research lacks standardized methods and comprehensive studies. This shortfall is due to inconsistent EEG target selection and insufficient focus on coherence in training. This review aims to provide empirical support for EEG target selection, conduct detailed control analyses, and examine the specificity of electrodes and frequencies to relation to the psychomotor efficiency hypothesis. Following the PRISMA method, 2,869 empirical studies were identified from PubMed, Science Direct, Web of Science, Embase, CNKI, and PsycINFO. Thirteen studies met the inclusion criteria: (i) proficient skill levels; (ii) use of EEG; (iii) neurofeedback training (NFT); (iv) motor performance metrics (reaction time, precision, dexterity, balance); (v) control group for NFT comparison; (vi) peer-reviewed Englishlanguage publication; and (vii) randomized controlled trial (RCT) design. Studies indicate that NFT can enhance sports performance, including improvements in shooting accuracy, golf putting, and overall motor skills, as supported by the psychomotor efficiency hypothesis. EEG NFT demonstrates potential in enhancing sports performance by optimizing performers' mental states and psychomotor efficiency. However, the current body of research is hampered by inconsistent methodologies and a lack of standardized EEG target selection. To strengthen the empirical evidence supporting EEG NFT, future studies need to focus on standardizing target selection, employing rigorous control analyses, and investigating underexplored EEG markers. These steps are vital to bolster the evidence for EEG NFT and enhance its effectiveness in boosting sport performance. [ABSTRACT FROM AUTHOR]

The modified reactive strength index (mRSI) is a commonly used metric to quantify lower-body explosiveness during countermovement jump (CMJ) performance. However, few studies have attempted to examine its validity as a measure of explosiveness, particularly among high school athletes. The purpose of this study was to examine the validity of the mRSI as a measure of lower-body explosiveness among a relatively large sample of male and female high school athletes from various sports. As part of this study, male (n = 132) and female (n = 43) high school athletes performed CMJs, while ground reaction forces were recorded using a force platform. The vertical ground reaction force data collected during the CMJs were used to derive the following variables: peak force (PF), peak power, time to PF, time to take-off, peak rate of force development, and the mRSI. Principal component analysis was applied and reduced these variables into 2 components related to "force" and "speed." The mRSI loaded on both the force (loading = 0.82) and speed (loading = -0.46) components, indicating that it incorporates elements of both force and speed, although it loaded more strongly on the force component than the speed component. The observed pattern of cross-loading suggests that the mRSI is generally a valid measure of lower-body explosiveness for male and female high school athletes. [ABSTRACT FROM AUTHOR]

The presented study evaluates the evidence base underpinning the use of the Mindfulness–Acceptance–Commitment approach (MAC) in applied sport psychology. To assess the effectiveness of the MAC protocol on improving mindfulness and psychological flexibility, and on enhancing sport performance and well-being among athletes, we used Robust Bayesian Meta-Analysis with Publication Selection Model-Averaging (RoBMAPSMA). In total, there were eleven controlled trials included in the meta-analysis. Results of the RoBMAPSMA show: a moderate model-averaged effect size estimate for developing mindfulness with strong evidence (g = 0.64, 95% CI 0.00–0.91, BFes = 25.35); a small model-averaged effect size estimate for experiential acceptance with anecdotal evidence (g = 0.36, 95% CI 0.00–0.92, BFes = 2.32); and a small model-averaged effect size estimate for improving sport performance with moderate evidence (g = 0.37, 95% CI 0.00–0.79, BFes = 3.27). Only one study assessed the effectiveness of the MAC protocol on well-being and averaged effect sizes ranged from 0.01 to 0.82. Based on the results of the meta-analysis, the Mindfulness–Acceptance–Commitment protocol can be effective in improving mindfulness. In addition, results suggest that the MAC protocol might be effective in improving sport performance. Currently available trials, however, do not provide sufficient evidence supporting the MAC protocol's effectiveness in developing psychological flexibility, experiential acceptance, and promoting well-being among athletes. [ABSTRACT FROM AUTHOR]

This study analyze the effect of a single functional neurology session on sports performance, pain perception, fatigue perception and thermographic muscular response in an international female weightlifting athlete with incapacity to tolerate weight. Functional neurology is a discipline leveraging neuroplasticity for non-invasive recovery and performance optimization. We found how a single session of functional neurology improved load tolerance, enabling her to lift weights at pre-injury levels after just a single session of functional neurology and reduced pain perception from 80 to 0 and fatigue perception from 90 to 20 on a 100-point scale while thermographic data showed up to a 15% decrease in body temperature indicating reduced inflammation and improved muscle recovery. Then, we found how a single functional neurology intervention produced an improve in sports performance, pain and fatigue perceptions, and peripheral vascular response in an inter-national female weightlifting athlete with an initial incapacity to tolerate weight. This supports the incorporation of functional neurology into sports rehabilitation, under-scoring its potential in optimizing athletes' health and performance.