1,721,035 research outputs found
COVID-19, indications for professional football teams and referees training resumption
No full textThese indications were drawn up by the Federal Medical-Scientific Commission (FIGC Commission), supplemented for the necessary time by some experts on the subject; currently they are intended to grant the highest achievable guarantee level to protect the health of players, referees and all professionals involved in case of resumption of collective training (Document dated 18 April 2020). They were designed to minimize the risk of contagion were thus based on the fact that during that phase of SARS-COV-2 virus pandemic (COVID-19) and in the absence of an effective vaccine, the zero-contagion risk did not exist and does not exist to date. Those guidelines have been updated on the basis of ongoing medical-scientific evidence, taking into account the indications given by the Technical-Scientific Committee and the opinion of the Italian Football Federation representatives, during a meeting that took place on May 7 and was transmitted to FIGC on May 11, 2020; these indications are to be considered stringent and binding for the purposes of sport training resumption
Interpretation and Diagnostic Workup of Premature Ventricular Beats
No full textAthletes with premature ventricular beats (PVBs) are not rare. The risk of malignant ventricular arrhythmias depends on the presence of an underlying pathological myocardial substrate. The standard diagnostic workup includes family and personal history, resting ECG, 24-h ambulatory ECG (possibly with 12-lead and including a training session), maximal exercise testing, and echocardiography. However, normal first-line investigation does not definitely rule out the presence of a concealed substrate (such as ventricular scars) that can be revealed only by more in-depth investigations (particularly cardiac magnetic resonance). Features that can help estimating the probability that the PVBs are linked to a heart disease and that suggest the need for second-level testing include morphology, complexity, and inducibility by exercise
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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