Sports最新文献

Doping research has predominantly focused on proximal cognitive predictors of athletes' intentions to use prohibited substances, often conceptualizing doping as a final behavioral outcome. Drawing on Self-Determination Theory and Goal Systems Theory, the present study examined the relationships between doping intentions, perceived means of performance enhancement, and internal and external life aspirations among competitive athletes. A total of 204 athletes (Mage = 22.99 years) completed measures assessing doping intentions, perceived effectiveness of different performance enhancement means, and aspiration components. The results indicated that stronger doping intentions were negatively associated with internal aspiration components and positively associated with external aspiration components. Doping intentions were also positively related to perceived effectiveness of nutritional supplements, doping, and combined enhancement practices, while being negatively associated with reliance on training and nutrition alone. Several indirect effects were observed, demonstrating that perceived performance enhancement partially mediated the relationships between doping intentions and aspiration components. These findings suggest that performance enhancement behaviors are cognitively embedded within athletes' motivational goal systems and play an active role in shaping aspiration-related evaluations. Overall, this study advances doping research by conceptualizing doping behavior as part of a broader, goal-directed, motivational structure rather than an isolated outcome.

Statins' effects on cardiorespiratory fitness (CRF) and their interaction with exercise training remain unclear in older adults with dyslipidemia. This cohort study enrolled nine hundred and eighty-one older adults with dyslipidemia who underwent one of three interventions: (i) multicomponent exercise training (MEX; n = 298; 74% females), (ii) daily statin monotherapy (ST; n = 178; 65% females), or (iii) combined treatment with statins and multicomponent exercise training (STMEX; n = 505; 79% females). CRF, functional status, and lipid profile were assessed at baseline and after 24 months. After follow-up, statin therapy reduced CRF by 4% in women (p < 0.001), but not in men. The statin groups also showed reduced upper- and lower-limb strength in both sexes. Exercise alone significantly improved CRF (women: 27% vs. men: 21%, p < 0.001) and functional status, regardless of sex. The combined treatment significantly increased women's CRF, whereas men showed an attenuated CRF benefit (women: 27% vs. men: 1%, p < 0.001). Our findings suggest sex-specific patterns in the effects of statin therapy on CRF in older adults with dyslipidemia. Statin therapy was associated with lower CRF over time in women, but not in men, whereas multicomponent exercise training may reverse these effects.

Scientific production on CrossFit^® has expanded alongside the growing popularity of the modality; however, multi-database scientometric analysis describing its structure, research trends, and knowledge gaps remains limited.

Objective: This study conducted a scientometric analysis to identify patterns within the literature and to provide directions for future research.

Methods: Searches were performed in the databases Web of Science, PubMed, and Scopus, including all publications available up to December 2024. The search identified 3927 records. After removing duplicates and excluding reviews, meta-analyses, and studies outside the scope, 526 original articles were included in the analysis. Scientometric analyses were conducted using Bibliometrix (version 4.3.2) implemented in R (version 4.4.2), with additional support from Microsoft Excel and VOSviewer (v1.6.20).

Results: The results indicate a marked growth in publication output, with an average annual increase of approximately 37.5%, reflecting the increasing academic interest in the modality. The United States and Brazil emerged as leading contributors, supported by strong research infrastructure and expanding scientific communities. The thematic structure of the field is predominantly centered on physiological responses, performance outcomes, and injury-related topics, while psychosocial, behavioral, and population-specific dimensions remain comparatively underexplored. Despite the observed expansion, the findings suggest that quantitative growth has outpaced methodological diversification and longitudinal development within the field. In addition, a limited integration between scientific findings and applied training contexts was identified, highlighting a gap between research production and real-world practice.

Conclusion: Overall, CrossFit^® research appears to be expanding toward a more diversified and structured scientific field; however, advancing the field will require greater methodological rigor, increased focus on longitudinal and integrative approaches, and stronger translation of scientific evidence into applied settings.

Tracking biomechanical changes associated with different training modalities remains a methodological challenge in applied sports science. This pilot longitudinal study examined stroke technique stability in seven junior rowers (aged 16.6 ± 0.5 years) across three measurement sessions (March, April, June), separated by two training mesocycles emphasising strength training and intensive rowing, respectively. Upper body angular velocity was recorded using a smartphone-based MEMS sensor fixed to the upper back during incremental ergometer exercise. Overall stroke duration and its standard deviation remained stable throughout the study period, whereas the durations of the two stroke phases corresponding to forward (drive) and backward (recovery) body motion changed systematically across mesocycles. Phase-specific changes were statistically significant in 10 of 12 paired comparisons (rank-sum test) and 7 of 12 within-subject comparisons (Wilcoxon signed-rank test) for phase durations, and in 9 and 5 of 12 comparisons for their standard deviations, respectively. These findings suggest that the internal structure of the rowing stroke is sensitive to training load specificity, even when overall stroke timing remains unchanged, and that smartphone-based angular velocity analysis provides a feasible tool for individualized biomechanical monitoring in young athletes.

Obesity is a significant risk factor for metabolic diseases and atherosclerotic cardiovascular disease (ASCVD). Exercise exerts beneficial effects partly through myokines secreted by skeletal muscle. This narrative review summarizes current evidence on exercise-induced myokines in obesity. We searched PubMed, Scopus, and Google Scholar up to Jan 2026 using keywords "myokines", "obesity", "resistance training", "aerobic exercise", and "HIIT". We focused on six myokines (IL-6, irisin, FGF21, myostatin, apelin, and Metrnl) that are consistently linked to metabolic and cardiovascular health. Key findings are as follows: resistance training effectively increases irisin and decreases myostatin, promoting muscle mass and fat browning; high-intensity interval training (HIIT) induces rapid IL-6 peaks and elevates Metrnl, enhancing anti-inflammatory responses and cardiac function; aerobic exercise improves FGF21 sensitivity and supports long-term metabolic homeostasis. For clinicians and exercise practitioners, a preliminary exercise framework can be suggested based on available human evidence. In obese patients, ≥3 sessions per week of resistance training (60-80% of one-repetition maximum, 8-12 repetitions, 3-4 sets) may be considered to optimize irisin/myostatin balance, combined with ≥150 min per week of moderate-intensity aerobic exercise (50-70% of maximum heart rate) or 75 min per week of HIIT (85-95% of peak heart rate, 4 × 4 min intervals) to improve FGF21 sensitivity and Metrnl levels. These suggestions should be interpreted as hypothesis-generating rather than definitive clinical guidance, given the heterogeneity of included studies and the absence of quantitative synthesis. Nevertheless, they offer a molecular basis for hypothesis-driven precision exercise prescription that requires validation in future prospective studies and randomized controlled trials.

The association between return-to-sport test batteries (RTS-TBs) and clinical outcomes remains unclear. Previous systematic reviews of RTS-TBs have reported low pass rates; however, these reviews have been limited by substantial heterogeneity. This systematic review aimed to quantify RTS-TB pass rates and examine their association with timing (post-op). Five electronic databases (AMED, CINAHL, MEDLINE, SPORTDiscus, PubMed) were searched on 22 December 2024. Observational studies reporting RTS-TB outcomes as a single pass or fail were included. A random-effects proportion meta-analysis was used to estimate the pooled prevalence of pass rates. A meta-regression was performed to assess the association between test timing and pass rate. Twelve studies (n = 1977) met the eligibility criteria, but five were excluded from the meta-analysis and meta-regression due to overlapping cohorts. From the remaining eight studies (n = 1449), the pooled prevalence of pass rates was 33% overall (95% CI 19 to 47%), 26% (95% CI 18 to 33%) for non-professional athletes, and 73% (95% CI 66 to 80%) for professional athletes, although only a single study focused on professional athletes. No association was observed between the post-operative timing of the test and passing RTS-TB (p = 0.73). The observed RTS-TB pass rates are low, and this may be influenced by the extreme heterogeneity. Although no association was observed between the RTS-TB timing and pass rates, this finding alone cannot confirm causality.

The study investigated the effects of high-intensity interval training (HIIT) on cardiorespiratory fitness, hormonal, and psychological markers in adolescents. Twenty-eight healthy male adolescents were randomized to a HIIT group or a non-training control group. HIIT comprises three sessions per week for 10 weeks, alternating 30 s runs at high-intensity and low-intensity. VO_2max was estimated using the incremental running test. Plasma testosterone and cortisol were assessed by ELISA methods. Depression, anxiety, and stress scores were determined using the Depression Anxiety Stress Scales-21. Data were analyzed using two-way ANOVA with repeated measures. Significant "group × time" interactions were detected for VO_2max, testosterone, cortisol, testosterone-to-cortisol ratio, and stress score, but not for anxiety and depression scores. HIIT resulted in increased VO_2max (p < 0.001, d = 1.04), testosterone (p = 0.005, d = 0.52), and testosterone-to-cortisol ratio (p = 0.008, d = 1.05), and decreased cortisol (p = 0.036, d = 1.09) and stress score (p = 0.020, d = 0.98). Ten-week HIIT resulted in an improvement in physical fitness, steroid hormonal balance, and self-reported stress symptoms, but no changes in depressive and anxiety symptoms in comparison to the control group. The findings should be interpreted with caution due to limitations, including the small sample size and the lack of assessment of sex-related differences. Further research is required to elucidate the topic.

Elite women's rugby has often been analysed using the male performance model as a reference, despite evidence that women's rugby presents distinct game demands and potentially different risk profiles. This study aimed to compare the frequency of key contact-related events between elite men's and women's rugby. An observational, retrospective, comparative cohort study was conducted using official performance data from 135 international matches from the men's and women's Six Nations Championships. Variables were grouped into three categories: Open-Play, Static Phases, and Discipline. Independent samples t-tests, Mann-Whitney U tests, and Linear Discriminant Analysis were used to identify sex-based differences. The results showed that men presented a higher frequency of rucks lasting more than 6 s (p < 0.001), whereas no significant differences were found in total tackles (p = 0.378) or total rucks (p = 0.634). In Static Phases, women's teams recorded significantly more scrums (p < 0.001). In Discipline, women conceded fewer free kicks (p = 0.003) but received more red cards (p = 0.020). In conclusion, elite women's rugby shares some open-play characteristics with the men's game but differs in scrum frequency and disciplinary profile, supporting the existence of a distinct contact and risk exposure profile that should be considered when designing training and prevention strategies.

Background: Padel is a rapidly growing sport, yet limited evidence is available regarding movement quality and injury history among competitive players. The Functional Movement Screen (FMS) may help describe movement patterns associated with previous injury, although its predictive value remains uncertain. This study examined the association between FMS total and component scores and self-reported injury history among competitive male padel players. Methods: A cross-sectional study was conducted involving 17 competitive male padel players, with 9 injured and 8 uninjured based on self-reported musculoskeletal injury history within the preceding 12 months. Movement quality was assessed using the seven-item FMS. Spearman's rank correlation was used to examine the association between FMS total score and injury history, while Mann-Whitney U tests were used to compare FMS total and component scores between groups. The seven component-level comparisons were considered exploratory. Bonferroni correction was applied by using an adjusted significance threshold of α = 0.05/7 = 0.007; therefore, unadjusted p-values were interpreted against this corrected threshold. Results: Lower FMS total scores were associated with previous injury history (ρ = -0.703, 95% CI: -0.89 to -0.38, p = 0.002). Previously injured players demonstrated lower FMS total scores than uninjured players (p = 0.005). Among individual components, the In-Line Lunge showed a significant between-group difference after Bonferroni correction (p = 0.004), suggesting lower performance in a task requiring lower-limb stability, mobility, and trunk control. Conclusions: In this small exploratory cross-sectional study, lower FMS scores were associated with self-reported previous injury among competitive male padel players. These findings should be interpreted cautiously, as the study design does not allow causal or predictive conclusions. Larger prospective studies are needed to clarify whether FMS scores have practical value in monitoring movement quality in padel athletes.

Crossfit^® is a high-intensity interval training modality that combines weightlifting, aerobic exercises, and gymnastics. Although it has gained widespread popularity, it also presents a considerable injury rate without clarity on the extent to which experience categories exhibit distinct temporal patterns. This study identifies the most common injuries and their progression across CrossFit^® categories over 12 months. We defined injury as any Crossfit-related event requiring healthcare consultation and interrupting an athlete's activity. An observational, longitudinal study was conducted with 102 participants categorized into three groups (n = 34): beginner, scale, and rx. An adapted injury index questionnaire was applied, and descriptive statistics were performed. Results showed that the most frequent injuries affected the shoulder and knee, with variations across the different athlete categories. Beginners exhibited the highest injury rates: knee (56%) and shoulder (35%). The scale group presented a greater concentration of shoulder injuries, whereas rx demonstrated the lowest injury incidence overall. Over the 12-month follow-up, 135 injuries were reported at baseline, decreasing to 116 at six months and 101 at the final evaluation. Dropout rates were 35% among beginners, 12% in the scale group, and 0% in the rx group. Crossfit-related injuries primarily affect the shoulders and knees, with a higher incidence in beginners. Future studies should investigate movement technique, strength, mobility, and limb dominance considering the overhead demands and the associated injury risk, in addition studies should examine training programming too.