A leg muscle score is a general indicator overall physical condition. It is based on leg muscle mass divided by body weight and then plotted against average healthy values for gender and age. Leg muscle represents the largest fraction of muscle mass in the body and so comparisons of leg muscle give a good prediction of overall muscle mass.

An ideal result should be one that is plotted on or above the line. Any score below the line indicates that increased exercise is required. (Y-axis: leg muscle score index/ X-axis: age)

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