Mixed
Sarcopenia diagnosis requires both low muscle mass and weakness; low muscle mass alone is weakly or not associated with functional disability.
To accurately diagnose sarcopenia in older adults, you must measure both muscle mass and muscle strength. Relying on muscle mass alone will miss many individuals at risk for disability. Use standardized cutpoints: grip strength <26 kg for men and <16 kg for women, and appendicular lean mass adjusted for BMI <0.789 for men and <0.512 for women.
Recent literature suggests that the role of muscle mass in function and health appears to be indirect... (iii) low muscle mass alone is weakly or not associated with function and disability (7,8).
Why this rating
Based on a pooled sample of 26,625 participants from nine diverse longitudinal cohorts and clinical trials.
Source
The FNIH Sarcopenia Project: Rationale, Study Description, Conference Recommendations, and Final Estimates
Stephanie A. Studenski et al. · The Journals of Gerontology Series A · 2014
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