Understanding the Feasibility and Validity of Muscle Strength Measurements in Aging Adults

The interesting investigation performed by Yeung et al1 evaluated the agreement between measures of handgrip strength (HGS) and knee extension strength (KES) in a sample of young and older adults. This study concluded that at individual and population levels, HGS alone should not be considered a proxy for overall muscle strength. These findings contribute to the ongoing debate regarding what measures of muscle strength should be included for accurately evaluating age-related declines in strength.