We know very little about the risk of sudden death associated with exercise in young competitors, so the benefits versus the hazards of sports activity pose a clinical dilemma. However, we know from a study in the Veneto region of Italy that adolescents and young adults involved in competitive sport had a two and a half times higher risk of sudden death. The young competitors who died suddenly were affected by silent cardiovascular diseases, predominantly cardiomyopathies. Sport did not directly cause the deaths, but rather it triggered cardiac arrest in athletes with underlying diseases predisposing them to life-threatening ventricular arrhythmias.
Italy has a mandatory eligibility test involving nearly six million young people every year and the test leans heavily on the use of 12-lead ECG. In one 17-year study by the Centre for Sports Medicine of Padua involving nearly 34,000 athletes under 35 years old, over 1,000 were disqualified from competing on health grounds, 621 (1.8%) because the tests revealed relevant cardiovascular abnormalities.
In the US young athletes had physical examinations and personal and family history investigations, but 12-lead ECG was done only at the doctors discretion. The American Heart Association previously assumed that ECG would not be cost-effective for screening. The results of Italys 25-year experience of systematic pre-participation evaluation show that the Italian screening method is more sensitive than the limited US protocol. ECG is abnormal in up to 95% of patients with hypertropic cardiomyopathy (HCM), which is the leading cause of sudden death in an athlete. Comparisons between findings in Italy where ECG is used and research in the US showed a similar prevalence of HCM in non-sport sudden cardiac death, but a significant difference – 2% versus 24% – in sports-related cardiovascular events. This suggests we have selectively reduced sports-related sudden death from HCM because the Italian system, using ECG, identifies vulnerable young people.
Gina Dellios | alfa
Researchers release the brakes on the immune system
18.10.2017 | Rheinische Friedrich-Wilhelms-Universität Bonn
Norovirus evades immune system by hiding out in rare gut cells
12.10.2017 | University of Pennsylvania School of Medicine
University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...
Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...
Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...
17.10.2017 | Event News
10.10.2017 | Event News
10.10.2017 | Event News
20.10.2017 | Information Technology
20.10.2017 | Materials Sciences
20.10.2017 | Interdisciplinary Research