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- Bahr, Roald, et al.
(författare)
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International Olympic Committee consensus statement: methods for recording and reporting of epidemiological data on injury and illness in sport 2020 (including STROBE Extension for Sport Injury and Illness Surveillance (STROBE-SIIS))
- 2020
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Ingår i: British Journal of Sports Medicine. - : BMJ PUBLISHING GROUP. - 0306-3674 .- 1473-0480. ; 54:7, s. 372-389
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Tidskriftsartikel (refereegranskat)abstract
- Injury and illness surveillance, and epidemiological studies, are fundamental elements of concerted efforts to protect the health of the athlete. To encourage consistency in the definitions and methodology used, and to enable data across studies to be compared, research groups have published 11 sport-specific or setting-specific consensus statements on sports injury (and, eventually, illness) epidemiology to date. Our objective was to further strengthen consistency in data collection, injury definitions and research reporting through an updated set of recommendations for sports injury and illness studies, including a new Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) checklist extension. The IOC invited a working group of international experts to review relevant literature and provide recommendations. The procedure included an open online survey, several stages of text drafting and consultation by working groups and a 3-day consensus meeting in October 2019. This statement includes recommendations for data collection and research reporting covering key components: defining and classifying health problems; severity of health problems; capturing and reporting athlete exposure; expressing risk; burden of health problems; study population characteristics and data collection methods. Based on these, we also developed a new reporting guideline as a STROBE Extension-the STROBE Sports Injury and Illness Surveillance (STROBE-SIIS). The IOC encourages ongoing in- and out-of-competition surveillance programmes and studies to describe injury and illness trends and patterns, understand their causes and develop measures to protect the health of the athlete. Implementation of the methods outlined in this statement will advance consistency in data collection and research reporting.
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| 3. |
- Hallak Neilson, John, et al.
(författare)
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Dynamic properties of two pedestrian wooden bridges including seasonal effects
- 2020
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Ingår i: Proceedings of the International Conference on Structural Dynamic , EURODYN. - : European Association for Structural Dynamics. ; , s. 1805-1813
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Konferensbidrag (refereegranskat)abstract
- The dynamic properties of two pedestrian wooden bridges situated in the Stockholm area have been determined experimentally. The main purpose was to investigate if these properties are season dependent. For that, tests were performed during the winter and the spring. 17 accelerometers were used to measure both vertical and horizontal vibrations. An impact hammer was used to excite the bridges. For the Vega bridge, a large variation for the lowest natural frequencies was observed, both for the first vertical and for the first transversal mode. For the Hägernäs bridge, a large variation was observed for the first transversal mode but not for the first vertical mode. With exception for the first transversal mode for the Hägernäs bridge, no significant differences regarding the damping between winter and spring were observed. Finite element models of the two bridges have also been implemented and a good agreement with experimental results have been obtained. The numerical models have shown that the connections between the different components of the bridges have a significant influence on the dynamic properties. The models have also shown that the variation of the stiffness for the asphalt layer may explain the differencies for the natural frequencies between spring and winter. However, due to the incertainties in the modelling of the asphalt, this conclusion must be taken with caution.
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