Understanding the first injury in athletics and its effect on dropout from sport:An online survey on 544 high-level youth and junior athletics (track and field) athletes

Objective To describe the first injury and to investigate whether it plays a role in altering athletics’ sustainable practice.Methods We conducted a cross-sectional study using an exploratory survey on the first injury and its consequences on athletics practice. In 2021, we asked all high-level athletes licensed with the French Federation of Athletics (FFA) under 18 years, under 20 years and under 23 years categories between 2007 and 2021.Results Out of 6560 emails sent by FFA, 544 athletes responded, and 93.6% (n=510) reported experiencing at least one injury during their career. The first injury occurred at a mean age of 17.5±3.3 years after 6.1±4.1 years of athletics practice. The main locations of the first injury were the posterior thigh (28.9%), the ankle (16.5%) and the knee (12.6%), and the principal reported injury types were muscle (37.7%), tendon (17.5%) and ligament (15.5%). More than a third of injured athletes (36.7%) reported experiencing ongoing symptoms or sequelae after their first injury, and about half (48.5%) experienced recurrences. About 20% had stopped athletics at the time of the survey, with injury problems the primary cause of athletes dropping out (46.2%), including the first injury (9.4%).Conclusions Injuries played an important role in altering sustainable athletics practice, with injury accounting for about 50% of all reported dropouts and the first injury accounting for about 10% of all reported causes. Our results provide evidence to target the prevention of the first injury, which could be considered the origin of the ‘vicious circle’ of injuries

Infographic:Useful steps in the prevention of illnesses during international athletics championships

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No detection of methane on Mars from early ExoMars Trace Gas Orbiter observations

The detection of methane on Mars has been interpreted as indicating that geochemical or biotic activities could persist on Mars today. A number of different measurements of methane show evidence of transient, locally elevated methane concentrations and seasonal variations in background methane concentrations. These measurements, however, are difficult to reconcile with our current understanding of the chemistry and physics of the Martian atmosphere, which-given methane's lifetime of several centuries-predicts an even, well mixed distribution of methane. Here we report highly sensitive measurements of the atmosphere of Mars in an attempt to detect methane, using the ACS and NOMAD instruments onboard the ESA-Roscosmos ExoMars Trace Gas Orbiter from April to August 2018. We did not detect any methane over a range of latitudes in both hemispheres, obtaining an upper limit for methane of about 0.05 parts per billion by volume, which is 10 to 100 times lower than previously reported positive detections. We suggest that reconciliation between the present findings and the background methane concentrations found in the Gale crater would require an unknown process that can rapidly remove or sequester methane from the lower atmosphere before it spreads globally

Martian dust storm impact on atmospheric H₂O and D/H observed by ExoMars Trace Gas Orbiter

Global dust storms on Mars are rare but can affect the Martian atmosphere for several months. They can cause changes in atmospheric dynamics and inflation of the atmosphere, primarily owing to solar heating of the dust. In turn, changes in atmospheric dynamics can affect the distribution of atmospheric water vapour, with potential implications for the atmospheric photochemistry and climate on Mars. Recent observations of the water vapour abundance in the Martian atmosphere during dust storm conditions revealed a high-altitude increase in atmospheric water vapour that was more pronounced at high northern latitudes, as well as a decrease in the water column at low latitudes. Here we present concurrent, high-resolution measurements of dust, water and semiheavy water (HDO) at the onset of a global dust storm, obtained by the NOMAD and ACS instruments onboard the ExoMars Trace Gas Orbiter. We report the vertical distribution of the HDO/H O ratio (D/H) from the planetary boundary layer up to an altitude of 80 kilometres. Our findings suggest that before the onset of the dust storm, HDO abundances were reduced to levels below detectability at altitudes above 40 kilometres. This decrease in HDO coincided with the presence of water-ice clouds. During the storm, an increase in the abundance of H2O and HDO was observed at altitudes between 40 and 80 kilometres. We propose that these increased abundances may be the result of warmer temperatures during the dust storm causing stronger atmospheric circulation and preventing ice cloud formation, which may confine water vapour to lower altitudes through gravitational fall and subsequent sublimation of ice crystals. The observed changes in H2O and HDO abundance occurred within a few days during the development of the dust storm, suggesting a fast impact of dust storms on the Martian atmosphere

Analyses of Helsinki 2012 European Athletics Championships Injury and Illness Surveillance to Discuss Elite Athletes Risk Factors

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Consommation de substances interdites chez le sportif: étude à l’Antenne Médicale de Prévention du Dopage de Midi-Pyrénées (AMPD-MP)

Objectif. Ce travail étudie les données recueillies (à partir des fiches d’observation) lors des entretiens réalisés avec les sportifs ayant consulté l’Antenne Médicale de Prévention du Dopage (AMPD) Midi-Pyrénées entre 2002 et 2008. Méthodologie. Étude rétrospective sur une période de 7 ans (2002-2008). Les variables analysées ont été les caractéristiques des sportifs, les substances consommées ainsi que les disciplines sportives concernées. Résultats. Trente-cinq fiches d’observation ont été répertoriées correspondant à 32 hommes et 3 femmes, d’âge moyen 28 ans (extrêmes de 18 et 47 ans, dont 10 sujets ≥ 30 ans). Le niveau de compétitions était national pour 16, international pour 8 et régional pour 7. La moyenne des années de pratique sportive était de 14 ans. Les sports correspondaient essentiellement au rugby (9), cyclisme (5), athlétisme (3) et culturisme (3). Les substances interdites répertoriées ont été le cannabis (15 cas), les glucocorticoïdes (9), les androgènes (4), les sympathicomimétiques (4), les bêta-2 agonistes (2) et les anti-inflammatoires non stéroïdiens (2). Nous avons aussi trouvé des produits vétérinaires (clenbuterol, boldone-veterinaire)[2]. Conclusion. Cette étude permet un premier bilan des consultations cliniques dans les AMPD. Elle montre un âge relativement élevé des sportifs consultants. Les sports le plus souvent retrouvés ont été le rugby et le cyclisme. Le cannabis et les glucocorticoïdes paraissent les substances interdites les plus impliquées dans les situations de dopage

French Athletics Stakeholders’ Perceptions of Relevance and Expectations on Injury Prevention

International audienceThis study aimed to explore how stakeholders in athletics perceive the relevance of injury prevention, determine their communication preferences, and describe their expectations regarding injury prevention. We conducted a cross-sectional study using an exploratory online survey with high-level athletes (i. e. listed by the French ministry of sports), non-high-level athletes (i. e. all competitive level except high-level athletes), coaches, and health professionals licensed with the French Federation of Athletics. The survey was composed of three parts regarding stakeholder’s characteristics (4 questions), perceived relevance (2 questions), communication preferences and expectations (3 questions) towards injury prevention. There were 2,864 responders to the survey. Almost all responders found that injury prevention is relevant (97.7% [95% CI 97.0% to 98.2%]), without any significant differences in the distribution between stakeholders’ age, experience and sex (p>0.05). About three-quarters of the stakeholders preferred to find injury prevention information on a website (77.4%) without significant differences between stakeholders’ categories (p>0.05); other media to find injury prevention information was chosen by less than 50% of responders. Expectations about injury prevention were mainly explanations, advice and tips about injury knowledge, management and prevention, based on expert opinion and/or scientific research. In conclusion, these results confirm that injury prevention is a challenge shared by numerous stakeholders in athletics, within France, and provide some orientation on how and what information to disseminate to these stakeholders

The Athletics Injury Prevention Programme Can Help to Reduce the Occurrence at Short Term of Participation Restriction Injury Complaints in Athletics: A Prospective Cohort Study

We aimed to determine whether an Athletics Injury Prevention Programme (AIPP), targeting the most common athletics injuries, can reduce the occurrence of injury complaints that lead to restrictions in athletics participation (participation restriction injury complaints) in the short (12 weeks) and long (40 weeks) terms. For our 40-week prospective cohort study (level of evidence 2), we invited inter-regional and national-level athletes to regularly perform the AIPP, which included 8 exercises addressing core stability, hamstring, leg and pelvic muscles strengthening and stretching, and balance exercises. A Cox regression was used to analyse the influence of AIPP on the occurrence of participation restriction injury complaint, adjusted to sex, age, height, body mass, discipline, and history of injury complaints during the preceding season, individual response rate, mean weekly training time, mean weekly number of competition, presented by hazard ratio (HR) with 95% confidence interval (95% CI). At 12 weeks (n = 62 athletes), the AIPP was significantly associated with a lower risk of participation restriction injury complaint HR = 0.36 (95% CI: 0.15 to 0.86), p = 0.02 and HR = 0.29 (95% CI: 0.12 to 0.73), p = 0.009, with cumulative weeks and cumulative training time as time scale, respectively, while at 40 weeks (n = 53 athletes) there was no significant association. An 8-exercise injury prevention programme can effectively help to reduce occurrence of injury complaints that would restrict an athlete’s participation in athletics in the short term

Extending in-competition Athletics injury and illness surveillance with pre-participation risk factor screening: A pilot study

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