Research
Macro partitioning
Sarcopenia diagnosis requires combining DXA-derived lean mass indices (specifically ASMMI) with functional strength tests; lean mass alone is insufficient for diagnosis.
If DXA shows low appendicular skeletal muscle mass index (ASMMI <7.0 kg/m2 men, <6.0 kg/m2 women), do not diagnose sarcopenia yet. Perform functional strength tests (grip strength, gait speed). Only diagnose sarcopenia if strength is also low.
GoodQualifiesHIGH confidence
a diagnosis of sarcopenia is probable when low muscle strength is detected. The diagnosis is then confirmed by the association with low muscle quantity/quality... it is encouraged to use the term 'low muscle mass' in DXA reports in case of reduced ASMM/ASMMI values
Why this rating
Based on EWGSOP guidelines and multiple cited studies.
Source
Body composition with dual energy X-ray absorptiometry: from basics to new tools
Carmelo Messina et al. · Quantitative Imaging in Medicine and Surgery · 2020
narrative_reviewCited 246×
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