Medical research

Men who do exercise produce better quality semen

A new study conducted by researchers at the University of Cordoba links moderate physical activity in males with better hormone levels and sperm characteristics that favour reproduction compared to sedentary men.

Medical research

Fat molecule ceramide may factor in muscle loss in older adults

As men and women age, increasing quantities of fat tissue inevitably take up residence in skeletal muscle. A small study of older and younger men conducted at the Jean Mayer USDA Human Nutrition Research Center on Aging at ...

Cardiology

Cold air chills heart's oxygen supply

People with heart disease may not be able to compensate for their bodies' higher demand for oxygen when inhaling cold air, according to Penn State researchers, making snow shoveling and other activities dangerous for some.

Health

Backs bear a heavy burden

Trudging from place to place with heavy weights on our backs is an everyday reality, from schoolchildren toting textbooks in backpacks to firefighters and soldiers carrying occupational gear. Muscle and skeletal damage are ...

Cardiology

Study investigates how to turn ultrasound into a pacemaker

Ultrasound—the technology used for sonograms and examining the heart—can increase the rate at which heart cells beat, researchers from Drexel University report. In their paper "Ultrasound-Induced Modulation of Cardiac ...

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