Elite endurance athletes commonly have mutations that result in the loss of the protein α-actinin-3, which is a major component of fast-twitch muscle fibers. Loss of α-actinin-3 is associated with reduced power, increased ...
Sep 16, 2013
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A Johns Hopkins study finds that healthy people who carry a genetic mutation for arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C) are at much higher risk of developing the symptoms of the life-threatening ...
Jul 17, 2013
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In the past, pregnant women were discouraged from exercise. Pregnancy was seen as a time to put your feet up and take it easy. But this historical view of pregnancy was very much based on cultural and social biases rather ...
Jul 15, 2013
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Nik Wallenda, who completed a 1,400-foot tightrope walk over a river gorge near the Grand Canyon on live television Sunday, is not super-human despite his successful feat, according to Ajit Chaudhari (AH-jit CHOW-dree), an ...
Jun 25, 2013
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Cross-country skiers who take part in one of the world's most challenging ski races, the 90 km Vasaloppet in Sweden, are at increased risk of developing arrhythmia – problems with the rate or rhythm of their heart beat ...
Jun 11, 2013
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Everyone older than 70 should be checked for frailty, a condition that is both easily treated and potentially deadly, according to an article by representatives from six major international and U.S. medical organizations.
Jun 5, 2013
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A new "telerehabilitation" approach lets physical therapists assess patients with low back pain (LBP) over the Internet, with good accuracy compared with face-to-face examinations, reports a study in the May 15 issue of Spine.
May 20, 2013
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Even with a greater muscle mass, a sprinter cannot win a marathon. His specially-trained and strengthened muscles will fatigue faster than the endurance-trained muscles of a long distance runner. The research group of Prof. ...
May 15, 2013
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Researchers discovered that small pieces of genetic material called microRNAs link the two defining characteristics of fit muscles: the ability to burn sugar and fat and the ability to switch between slow- and fast-twitch ...
May 8, 2013
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Athletes in combat sports often try to shed body weight in order to compete against lighter and smaller opponents. A new doctoral thesis from the University of Gothenburg, Sweden, points to the human body's limited ability ...
May 2, 2013
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