Department of Family Medicine, College of Medicine, Kyung Hee University, Kyung Hee University Medical Center, Seoul, Korea.
Department of Biomedical Science and Technology, College of Medicine/East-West Medical Research Institute, Kyung Hee University, Seoul, Korea.
Geriatr Gerontol Int. 2020 Sep;20(9):822-827. doi: 10.1111/ggi.13983. Epub 2020 Jul 27.
Calf circumference (CC) measurement has been used for assessing skeletal muscle mass and for screening sarcopenia. However, there is no gold standard method for CC assessment.
We analyzed 1439 participants (mean age 75.9 ± 3.8 years, 47.7% men) from the 2017 baseline survey of the Korean Frailty and Aging Cohort Study. CC was measured, using a tape, on both sides in standing and sitting positions. For sarcopenia, the diagnostic criteria of the Asian Working Group for Sarcopenia 2019 was used.
The mean of CC on the left side (Lt.CC) was smaller than that on the right side (Rt.CC) in standing (Rt.CC 33.82 cm, Lt.CC 33.76 cm, P = 0.006) and sitting (Rt.CC 34.29 cm, Lt.CC 34.21 cm, P = 0.005) positions. The Lt.CC of right-handers, regardless of posture, was smaller than Rt.CC (standing: Rt.CC 33.83 cm, Lt.CC 33.76 cm, P = 0.006; sitting: Rt.CC 34.28 cm, Lt.CC 34.21 cm, P = 0.006). The Lt.CC of left-handers was non-significantly smaller than Rt.CC (standing: Rt.CC 33.77 cm, Lt.CC 33.75 cm, P = 0.896; sitting: Rt.CC 34.35 cm, Lt.CC 34.28 cm, P = 0.527). In the results of receiver operating characteristic analysis of CC for diagnosing sarcopenia based on the Asian Working Group for Sarcopenia 2019, Rt.CC in the standing posture showed the largest area under the curve (standing: Rt.CC 0.716, Lt.CC 0.714; sitting: Rt.CC 0.707, Lt.CC 0.703).
Our study shows that CC measurement on either side in the standing posture, regardless of the dominant hand, can be used as an optimal method for screening sarcopenia in community-dwelling older adults. Geriatr Gerontol Int 2020; 20: 822-827.
小腿围（CC）测量已被用于评估骨骼肌量和筛查肌肉减少症。然而，目前还没有 CC 评估的金标准方法。
我们分析了来自 2017 年韩国虚弱与衰老队列研究基线调查的 1439 名参与者（平均年龄 75.9±3.8 岁，47.7%为男性）。使用卷尺在站立和坐姿下分别测量双侧 CC。对于肌肉减少症，使用 2019 年亚洲肌肉减少症工作组的诊断标准。
站立位时，左侧 CC（Lt.CC）小于右侧 CC（Rt.CC）（站立位：Rt.CC 33.82cm，Lt.CC 33.76cm，P=0.006），坐姿时也如此（Rt.CC 34.29cm，Lt.CC 34.21cm，P=0.005）。无论姿势如何，右利手者的 Lt.CC 均小于 Rt.CC（站立位：Rt.CC 33.83cm，Lt.CC 33.76cm，P=0.006；坐姿：Rt.CC 34.28cm，Lt.CC 34.21cm，P=0.006）。左利手者的 Lt.CC 虽小于 Rt.CC，但无统计学意义（站立位：Rt.CC 33.77cm，Lt.CC 33.75cm，P=0.896；坐姿：Rt.CC 34.35cm，Lt.CC 34.28cm，P=0.527）。在基于 2019 年亚洲肌肉减少症工作组的 CC 诊断肌肉减少症的受试者工作特征曲线分析结果中，站立位时的 Rt.CC 曲线下面积最大（站立位：Rt.CC 0.716，Lt.CC 0.714；坐姿：Rt.CC 0.707，Lt.CC 0.703）。
本研究表明，无论惯用手如何，在站立位测量双侧 CC 都可以作为社区老年人筛查肌肉减少症的最佳方法。
