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Take off track and field
Describes the many different sports that are often performed outdoors, with a special section that features the top track and field athletes today.
Book
Universal prevention through a digital health platform reduces injury incidence in youth athletics (track and field): a cluster randomised controlled trial
ObjectivesTo examine whether universal prevention via a digital health platform can reduce the injury incidence in athletics athletes aged 12–15 years and if club size had an influence on the effect of the intervention.MethodsThis was a cluster randomised trial where young athletics athletes were randomised through their club following stratification by club size into intervention (11 clubs; 56 athletes) and control (10 clubs; 79 athletes) groups. The primary endpoint was time from baseline to the first self-reported injury. Intervention group parents and coaches were given access to a website with health information adapted to adolescent athletes and were encouraged to log in and explore its content during 16 weeks. The control group continued training as normal. Training exposure and injury data were self-reported by youths/parents every second week, that is, eight times. The primary endpoint data were analysed using the log-rank test. Cox proportional hazards regression was used to analyse the second study aim with intervention status and club size included in the explanatory models.ResultsThe proportion of completed training reports was 85% (n=382) in the intervention group and 86% (n=545) in the control group. The injury incidence was significantly lower (HR=0.62; χ2=3.865; p=0.049) in the intervention group. The median time to first injury was 16 weeks in the intervention group and 8 weeks in the control group. An interaction effect between the intervention and stratification factor was observed with a difference in injury risk between athletes in the large clubs in the intervention group versus their peers in the control group (HR 0.491 (95% CI 0.242 to 0.998); p=0.049).ConclusionsA protective effect against injury through universal access to health information adapted for adolescent athletes was observed in youth athletics athletes. The efficacy of the intervention was stronger in large clubs.Trial registration number NCT03459313.
Journal Article
Track & field
\"World's Fastest Human. That is the title bestowed on the person with the best time in the 100 meter dash. This event is the centerpiece of track and field, the collective name for events that are based on running, jumping and throwing. Inside these pages, learn more about track and field's greatest moments, iconic athletes, and what the future holds for the sport.\"--Adapted from back cover.
Book
Construct validity and reliability of the Talent Development Environment Questionnaire in Caribbean youth track and field athletes
Caribbean nations stand to benefit significantly from the potential insights that can be gained from the assessment of their athlete talent development environments; which in turn can lead to the formulation of evidence-based strategies and improvements to their sport development pathways. The principal aim of this study was to examine the psychometric properties of the 25-item TDEQ-5 to determine its validity to assess the development environments of talented youth track and field athletes from six English-speaking Caribbean countries. As a secondary aim, we sought to examine athletes' perceptions of their talent development environment within this context. Confirmatory factor analysis revealed adequate model fit of a re-specified model and good overall internal reliability of the scale, therefore offering support for its use within this context. Furthermore, adequate construct validity and internal reliability was found within three subscales (i.e., communication, holistic quality preparation and support network) with subpar scores within two subscales (i.e., long-term development focus and alignment of expectations). Preliminary findings on athletes' perceptions of their environment revealed key strengths in coaches' long-term development focus and communication, however deficiencies were noted in the accessibility and availability of sport-related support and preparation of athletes. In conclusion, the re-specified TDEQ-5 with 25 items appears to be a reliable and valid measure within the Caribbean context. However, it is recommended that the scale be used with some caution with regard to the interpretation of results for the 'long-term development focus' and 'alignment of expectations' subscales.
Journal Article
Track Orientation Density Imaging (TODI) and Track Orientation Distribution (TOD) based tractography
Ever since the introduction of the concept of fiber tractography, methods to generate better and more plausible tractograms have become available. Many modern methods can handle complex fiber architecture and take on a probabilistic approach to account for different sources of uncertainty. The resulting tractogram from any such method typically represents a finite random sample from a complex distribution of possible tracks. Generating a higher amount of tracks allows for a more accurate depiction of the underlying distribution. The recently proposed method of track-density imaging (TDI) allows to capture the spatial distribution of a tractogram. In this work, we propose an extension of TDI towards the 5D spatio-angular domain, which we name track orientation density imaging (TODI). The proposed method aims to capture the full track orientation distribution (TOD). Just as the TDI map, the TOD is amenable to spatial super-resolution (or even sub-resolution), but in addition also to angular super-resolution. Through experiments on in vivo human subject data, an in silico numerical phantom and a challenging tractography phantom, we found that the TOD presents an increased amount of regional spatio-angular consistency, as compared to the fiber orientation distribution (FOD) from constrained spherical deconvolution (CSD). Furthermore, we explain how the amplitude of the TOD of a short-tracks distribution (i.e. where the track length is limited) can be interpreted as a measure of track-like local support (TLS). This in turn motivated us to explore the idea of TOD-based fiber tractography. In such a setting, the short-tracks TOD is able to guide a track along directions that are more likely to correspond to continuous structure over a longer distance. This powerful concept is shown to greatly robustify targeted as well as whole-brain tractography. We conclude that the TOD is a versatile tool that can be cast in many different roles and scenarios in the expanding domain of fiber tractography based methods and their applications.
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•Track Orientation Density Imaging (TODI) extends TDI to the 5D spatio-angular domain.•TODI constructs the full Track Orientation Distribution (TOD) in each voxel.•TODI is amenable to spatial and angular super-resolution (or even sub-resolution).•The amplitude of a short-tracks TOD is a measure of Track-like Local Support (TLS).•A short-tracks TOD can guide tracks along continuous structure over a longer distance.
Journal Article
Track and field
This book introduces readers to the basics of the sport and encourages them to try track and field themselves.
Book
Research on Multi-target Tracking Algorithm Based on Track Segment Association
In the process of multi-target tracking, the complex underwater acoustic channel, target model mismatch, target strong maneuvering and other factors are easy to cause track interruption and rerun, which have a bad influence on the situation assessment and tactical decision of the Unmanned sonar system. Aiming at the problem of track interruption, this paper integrates the track adhesion algorithm into the active multi-target tracking algorithm. Simulation results show that the track adhesion algorithm can effectively improve the correct track association rate and track lifetime. By comparing the effect of the new and old methods with the sea test data, the track adhesion can effectively solve the problem of track interruption in the case of target track maneuvering and improve the track life.
Journal Article
289. Influence of different intensity track and field competition experiences on athletes' psychological resilience
Abstract
Background
Track and field sports, as a structured physical and mental intervention, may improve the psychological state of patients through stress adaptation mechanisms based on their varying intensity of competition experiences. In this regard, the research is based on the stress adaptation theory of psychological resilience, aiming to explore the differences in the impact of low, medium, and high-intensity track and field competition experiences on the psychological resilience of patients with schizophrenia, clarify the appropriate intervention intensity, and provide effective intervention methods for the treatment of schizophrenia.
Methods
This study selected 60 rehabilitation patients who met the criteria for mental disorders and randomly divided them into a low-intensity group, a moderate intensity group, and a control group, with 20 patients in each group. Experimental steps: The control group only received routine rehabilitation training, the low-intensity group participated in one short 100 m distance non competitive competition per week, and the moderate intensity group participated in two 800 m distance competitive competitions per week, with an intervention period of 12 weeks. The evaluation criteria use the Connor Davidson Resilience Scale (CD-RISC), which includes three dimensions: resilience (0-32 points), optimism (0-16 points), and self-improvement (0-24 points), with a total score of 0-72 points. The higher the score, the stronger the psychological resilience; At the same time, the Positive and Negative Syndrome Scale (PANSS) was used to evaluate the improvement of symptoms, with a total score of 0-144 points. The lower the score, the milder the symptoms. Data statistics were conducted using SPSS 22.0.
Results
From the experimental intervention effects in Table 1, the total score and scores of each dimension of CD-RISC in the moderate intensity group were significantly higher than those in the low-intensity group and the control group (p<.05). In addition, the total score of PANSS in the moderate intensity group was significantly lower than the other two groups (p<.05).
Discussion
Through the above experimental analysis, it can be concluded that intensity competition promotes patients' resilience and self-improvement abilities in goal setting and coping with setbacks through moderate pressure stimulation, thereby improving their mental symptoms. However, low-intensity competitions have limited intervention effects due to insufficient pressure stimulation, while the control group has no competition experience and no significant improvement in psychological state. In the total score of CD-RISC, the highest score for the moderate intensity group was 53.2 ± 7.1, significantly better than the other groups (p<.05). Future research can expand the sample size, extend the follow-up period, explore individualized intervention intensity for patients with different disease courses and ages, and further improve the psychological resilience support of track and field competitions for patients.
Journal Article