The reason for the comparison (lest our hunky jocks complain to be likened to grand-folks) is that the calcium leaking out of muscle cells – something that is prone to both athletes and the elderly. According to physiologists from the Columbia University Medical Center in New York, this process weakens muscle force and it activates protein-digesting enzyme that damages muscle fibers which may eventually cause feelings of extreme fatigue.
The study also says that,
“People with chronic heart failure are subject to this same kind of muscle leak and damage constantly even without doing any exercise,” Marks said in a statement. “One of these patients’ most debilitating symptoms is muscle weakness and fatigue, which can be so bad they can’t get out of bed, brush their teeth, or feed themselves.”
Source: United Press International
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