Sarcopenia was originally defined as an age-associated loss of muscle mass.1-2 Recently a number of European and international groups have redefined sarcopenia as being a decline in muscle function (either walking speed or grip strength) associated with loss of muscle mass.3"5 This approach has been validated.6-7 Sarcopenia leads to disability, falls, and increased mortality.8-16 Loss of muscle strength and aerobic function are 2 of the hallmarks of frailty.17-21 Sarcopenia has been linked to an increased prevalence of osteoporosis, thus further increasing its propensity to produce hip fractures.22-27
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