ORIGINAL ARTICLE
Year : 2019  |  Volume : 10  |  Issue : 3  |  Page : 126-130

Diagnostic merit of using the calf circumference to estimate the muscle mass as a component of sarcopenia in elderly outpatients


1 Division of Geriatric, Department of Internal Medicine, Faculty of Medicine Universitas Indonesia-Dr. Cipto Mangunkusumo General Hospital, Jakarta, Indonesia
2 Department of Internal Medicine, Faculty of Medicine Universitas Indonesia-Dr. Cipto Mangunkusumo General Hospital, Jakarta, Indonesia
3 Division of Rheumatology, Department of Internal Medicine, Faculty of Medicine Universitas Indonesia-Dr. Cipto Mangunkusumo General Hospital, Jakarta, Indonesia
4 Division of Cardiology, Department of Internal Medicine, Faculty of Medicine Universitas Indonesia-Dr. Cipto Mangunkusumo General Hospital, Jakarta, Indonesia
5 Osteoporosis Center, Medistra Hospital, Jakarta, Indonesia

Correspondence Address:
Purwita Wijaya Laksmi
Division of Geriatric, Department of Internal Medicine, Faculty of Medicine Universitas Indonesia, Dr. Cipto Mangunkusumo General Hospital, Jakarta
Indonesia
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jnsbm.JNSBM_42_19

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Objective: Sarcopenia is a geriatric syndrome that can lead to poor clinical outcomes. Therefore, a simple measurement is necessary to estimate the muscle mass as a component of sarcopenia. The aim of this study was to determine the diagnostic merit of using the calf circumference (CC) to estimate the muscle mass in elderly individuals. Materials and Methods: This was a cross-sectional study of patients over 60 years conducted at the Geriatric Clinic of the Dr. Cipto Mangunkusumo Hospital in Jakarta, Indonesia, from April to June of 2018. Dual-energy X-ray absorptiometry was used as a reference test for the muscle mass measurements, and the classification of normal or low muscle mass was based on the Asian Working Group for Sarcopenia criteria. The nondominant leg was used to measure the CC. Results: Out of 120 patients, 74 were female (61.7%). The optimal CC cutoff points for low muscle mass were 34 cm for the male patients (the values for the sensitivity [Sn], specificity [Sp], positive predictive value [PPV], negative predictive value [NPV], and area under the receiver operating characteristic curve [AUC] were 64.7%, 79.3%, 64.7%, 79.3%, and 73.1%, respectively) and 29 cm for the female patients (the values for the Sn, Sp, PPV, NPV, and AUC were 71.4%, 95.5%, 62.5%, 97.0%, and 96.4%, respectively). Conclusion: The sensitivities and specificities of the CCs were 64.7% and 79.3%, respectively, for the males and 71.4% and 95.5%, respectively, for the females. The CC could be used in clinical practice to estimate the muscle mass of elderly outpatients.


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