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2022 ◽  
Vol 8 (1) ◽  
Author(s):  
Michael Barth ◽  
Hans-Peter Platzer ◽  
Carina Andrea Forstinger ◽  
Gunnar Innerhofer ◽  
Anton Giger ◽  
...  

Abstract Background To increase safety in elite alpine ski racing Injury Surveillance Systems were implemented and preventive measures introduced. However, studies analysing the change in athletes’ injury risk by controlling for their exposure are still scarce. Objectives This study aimed to describe and analyse the risk of in-competition severe injury events (SIEcomp) in elite alpine ski racing. Methods Data recorded in the Austrian Ski Federation’s Injury Surveillance System were used to analyse the SIEcomp incidence. Information on athletes’ competition exposure was obtained from the official website of the International Ski Federation. In 23 seasons, 2333 skier seasons were recorded for the Austrian Ski Team. Within a total of 114,531 runs 169 SIEcomp occurred. Generalised Estimating Equation for Poisson Regressions were applied. Results The SIEcomp incidence per 1000 runs was 1.48 [95% confidence interval (CI) 1.26–1.73] for elite alpine ski racers and 2.21 (95% CI 1.79–2.75) for the subgroup of World Cup racers. A significant sex difference was detected for the subgroup of junior racers with a higher risk for female athletes [risk ratio (RR): 2.97, 95% CI 1.46–6.05]. Between the seasons of 1997 and 2020, the seasonal SIEcomp incidence increased by a factor of 2.67 for elite alpine ski racers and 3.53 for World Cup racers. Downhill (2.75, 95% CI 2.18–3.47) had the highest SIEcomp incidence, followed by super-G (1.94, 95% CI 1.30–2.88), giant slalom (1.40, 95% CI 1.06–1.85), and slalom (0.64, 95% CI 0.43–0.96). Conclusion Although many preventive measures have been implemented in elite alpine ski racing, the risk of SIEcomp has increased over the last two decades.


Sensors ◽  
2022 ◽  
Vol 22 (2) ◽  
pp. 540
Author(s):  
Ola Elfmark ◽  
Gertjan Ettema ◽  
Petter Jølstad ◽  
Matthias Gilgien

The purpose of this study was to find a generic method to determine the aerial phase of ski jumping in which the athlete is in a steady gliding condition, commonly known as the ‘stable flight’ phase. The aerial phase of ski jumping was investigated from a physical point mass, rather than an athlete–action-centered perspective. An extensive data collection using a differential Global Navigation Satellite System (dGNSS) was carried out in four different hill sizes. A total of 93 jumps performed by 19 athletes of performance level, ranging from junior to World Cup, were measured. Based on our analysis, we propose a generic algorithm that identifies the stable flight based on steady glide aerodynamic conditions, independent of hill size and the performance level of the athletes. The steady gliding is defined as the condition in which the rate-of-change in the lift-to-drag-ratio (LD-ratio) varies within a narrow band-width described by a threshold τ. For this study using dGNSS, τ amounted to 0.01s−1, regardless of hill size and performance level. While the absolute value of τ may vary when measuring with other sensors, we argue that the methodology and algorithm proposed to find the start and end of a steady glide (stable flight) could be used in future studies as a generic definition and help clarify the communication of results and enable more precise comparisons between studies.


Author(s):  
S. Yu. Babenkova

The Qatar National Vision 2030 program is based on two principles — modernization and preservation of traditions. Blockade of the country in 2017–2020 and the coronavirus pandemic became a serious test for the economy of Qatar, but the government and residents of the country do not consider themselves defeated by these circumstances, but on the contrary, these circumstances helped the country’s economy to survive the above crises. In 2019, the International Monetary Fund said that Qatar’s economy was resilient in the face of the blockade and shocks caused, including by the fall in hydrocarbon prices in 2014–2016. The events of the global economic crisis caused by the pandemic have posed another challenge to the financial and banking system of Qatar. Thanks to the measures of the country’s government aimed at ensuring business continuity, maintaining liquidity and providing support to the sectors of the economy affected by the pandemic, it was possible to mitigate the impact of this shock, support cash flows, and achieve financial and banking stability in the country. However, according to fund analysts, COVID–19 and a sharp drop in hydrocarbon revenues will lead to a reduction in real GDP growth by 2% in 2020. At the same time, future profits from hosting the FIFA World Cup in 2022, continued expansion of capacities in production of liquefied gas and competent fiscal and monetary policy will contribute to economic growth in the country in the medium term.


2022 ◽  
pp. 152700252110710
Author(s):  
Michał Marcin Kobierecki ◽  
Michał Pierzgalski

This paper contributes to the current literature investigating whether hosting sports mega-events brings tangible economic benefits to the host country. Specifically, we examine whether staging the Olympic Games and the FIFA World Cups leads to observable economic growth. The research has been conducted through a quasi-experimental study in the spirit of the difference-in-differences method. The research subject includes states in which the Olympic Games and FIFA World Cup were held between 2010 and 2016: Canada, South Africa, Great Britain, and Brazil. We found that there is no significant effect of hosting sports mega-events on economic growth.


Author(s):  
Dimitrios P. Stergiou ◽  
Thomas Karagiorgos ◽  
Kostas Alexandris ◽  
Theodore Benetatos ◽  
Panagiota Balaska

The aim of this study is to test the applicability of the construct of memorable tourism experience in the context of a mega-sport event, and to investigate the contribution of event quality factors on the development of memorable tourism experiences. For the accomplishment of this aim, thestudy investigated the experiences of a sample of international spectators who attended the 2018 FIFA World Cup matches hosted in St. Petersburg, Russia. Data collection took place on-site during the group stage matches hosted at the stadium and was conducted with a self-completion questionnaire using two scales, one for memorable tourism experience and one for event quality factors. The results of exploratory and confirmatory factor analyses provided support for the psychometric properties of revised versions of the two scales. Multiple regression analysis showed that memorable tourism experiences were significantly predicted by the event quality factors, with the authenticity, entertainment, venue quality, and event competition dimensions having the most significant contributions. Theoretical and management implications are discussed.


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