Multi-Professional Healthcare Program, University Hospital, Federal University of Parana, General Carneiro Street, 181, Alto da Glória, Zip Code: 80060-900, Curitiba, Parana, Brazil.
Department of Physical Education, Federal University of Parana, Coração de Maria Street, 92, Jardim Botânico, Zip Code: 80210-132, Curitiba, Parana, Brazil.
Arch Gerontol Geriatr. 2020 Jan-Feb;86:103942. doi: 10.1016/j.archger.2019.103942. Epub 2019 Sep 3.
BACKGROUND/OBJECTIVES: Calf circumference (CC) is an indirect method used to evaluate muscle mass in older adults. Ultrasound has also been studied as a method for measuring muscle mass. Therefore, the aim of the present study was to correlate CC and muscle thickness of the medial gastrocnemius muscle (MGM) in healthy older women.
A cross-sectional study was conducted with 74 healthy older women. The MGM thickness was evaluated using an ultrasound device (Logiq Book XP, General Electric®). The reference value for adequate CC was ≥ 31 cm. Weight and height were measured for the calculation of the body mass index (BMI), which was dichotomized as with or without excess weight based on the cutoff points recommended by the World Health Organization (1995); Lipschitz (1994) and the Pan-American Health Organization (2001).
All participants were ≥ 64 years of age. Mean weight and height were 66.19 kg (SD: 10.48) and 1.55 m (SD: 0.06), respectively. Half of the participants had a BMI higher than 27.53 kg/m. Moderate positive correlations were found between CC and MGM thickness (ρ = 0.432; p < 0.001), MGM thickness and weight (r = 0.422; p < 0.001) and between MGM thickness and BMI (r = 0.438; p < 0.001). However, the correlation between CC and MGM thickness was non-significant among the women with excess weight.
A moderate positive correlation between MGM thickness and CC was found in healthy older women. However, this correlation was weak and non-significant among those with excess weight.
背景/目的：小腿围（CC）是一种用于评估老年人肌肉量的间接方法。超声检查也被研究作为一种测量肌肉量的方法。因此，本研究的目的是在健康的老年女性中，将 CC 与内侧比目鱼肌（MGM）的肌肉厚度进行相关性分析。
本研究为一项横断面研究，共纳入 74 名健康的老年女性。使用超声设备（Logiq Book XP，通用电气公司）评估 MGM 厚度。CC 的参考值为≥31cm。体重和身高用于计算身体质量指数（BMI），根据世界卫生组织（1995 年）、Lipschitz（1994 年）和泛美卫生组织（2001 年）推荐的切点，将 BMI 分为超重和非超重。
所有参与者的年龄均≥64 岁。平均体重和身高分别为 66.19kg（SD：10.48）和 1.55m（SD：0.06）。一半的参与者 BMI 高于 27.53kg/m²。CC 与 MGM 厚度之间存在中度正相关（ρ=0.432；p<0.001），MGM 厚度与体重之间存在中度正相关（r=0.422；p<0.001），MGM 厚度与 BMI 之间存在中度正相关（r=0.438；p<0.001）。然而，在超重的女性中，CC 与 MGM 厚度之间的相关性没有统计学意义。
在健康的老年女性中，MGM 厚度与 CC 之间存在中度正相关。然而，在超重的女性中，这种相关性较弱且无统计学意义。
