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Post by John A. Casler on Jan 26, 2009 12:32:19 GMT -8
Jamie Carruthers posted to SUPERTRAINING
Exercise intensity matters for both young and old muscles Daniel R Moore1* and Nicholas A Burd1
Physiology in Press First published online on December 15, 2008.
The force producing capability of skeletal muscle allows for locomotion and the successful performance of activities of daily living. Metabolically speaking, muscle is a significant contributor to the basal metabolic rate, is the prime storage depot for body amino acids, and is a key metabolic tissue involved in glucose disposal and lipid oxidation. As such, increasing or maintaining skeletal muscle mass can decrease the risk for metabolic disorders (e.g., type 2 diabetes) as well as all-cause mortality in a variety of diseased states. A gradual decline in muscle mass and strength, termed sarcopenia, appears to be an unavoidable consequence of aging that is associated with an increased risk for falls and the development of disorders of metabolism. Thus, studies investigating factors involved in the regulation of muscle protein turnover, with special emphasis on maintaining and even accruing lean mass, are indispensible. These studies will provide the knowledge necessary to help individuals maintain a critical level of muscle mass for overall health and well- being across the lifespan.
====================== Jamie Carruthers
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