This study aims to assess the reliability of the Elbow Performance Test as an upper extremity-based alternative for evaluating sarcopenia severity. Unlike traditional lower extremity-focused assessments, this test may offer a practical solution for individuals with mobility limitations or comorbidities affecting the lower limbs. Participants will include older adults with sarcopenia and healthy young adults. Functional tests, including the 4-meter Gait Speed Test, SPPB, TUG, and the Elbow Performance Test, will be administered twice within a 7-10-day interval. Reliability will be analyzed using intraclass correlation coefficients (ICC).
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the Elbow Performance Test
Timeframe: Two assessment sessions conducted seven to ten days apart to evaluate test-retest reliability using intraclass correlation coefficients (ICC).