Waist Circumference Measured by Bioelectrical Impedance Analysis Is Interchangeable with Manual Measurement: Increased Waist Circumference Is Associated with Locomotive Syndrome Risk.

Satoshi Tanaka,Masayoshi Morozumi,Kazuyoshi Kobayashi,Masaaki Machino,Shunsuke Kanbara,Taisuke Seki,Naoki Ishiguro,Kei Ando,Shinya Ishizuka,Sadayuki Ito,Taro Inoue,Shiro Imagama,Yukiharu Hasegawa

doi:10.1155/2019/5971030

Satoshi Tanaka, Masayoshi Morozumi + Show 11 more

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https://doi.org/10.1155/2019/5971030

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Abstract

Objectives The importance of preventive medicine in an aging society is increasing. Locomotive syndrome (LS) is attracting increasing attention. Recently, advances in bioelectrical impedance analysis (BIA) devices have made it possible to automatically measure waist circumference (WC). Nevertheless, there have been no reports evaluating the agreement or interchangeability between WC measured manually and using BIA. Therefore, we aimed to perform these analyses in the context of health checkups and investigated the associations with LS risk. Methods We enrolled 597 participants who underwent the following: two-step tests and stand-up tests; evaluations using a 25-question geriatric locomotive function scale for the LS risk test; anthropometric marker measurements including WC measured by manual and BIA; and measurements of total cholesterol and triglycerides. We used Bland–Altman analysis to calculate agreement and interchangeability of the WC measurement using BIA and the manual method. A statistical comparative study was then conducted between normal and LS risk groups. Subsequently, significant risk factors for LS were investigated using multivariate analysis. Results The Bland–Altman analysis showed that bias (BIA-manual) was negative overall (−2.024), for males (−1.418) and for females (−2.460), suggesting underestimation using BIA compared with manual measurements. Interchangeability was found between WC measurement by BIA and by manual methods, because the percentage error was less than 15% overall (12.3%), for males (10.2%) and for females (13.8%). Univariate analysis showed that WC was significantly higher in the LS risk group than in the normal group. Multivariate analysis adjusted for confounding factors showed that increase in WC significantly correlated with LS risk. Conclusions BIA and manual methods for measuring WC are interchangeable. The increase in WC measured by BIA was significantly associated with LS risk. It is important to continue focusing on increased WC and early detection of LS risk.

Highlights

In Japan, the average life expectancy has increased in parallel with advanced medical advances. e importance of preventive medicine is implied by phenomena such as prolonged hospitalization due to decreased mobility in elderly people.In 2007, the Japanese Orthopaedic Association (JOA) proposed the concept of “locomotive syndrome” (LS)
Spearman correlation and interclass correlation coefficient (ICC) as well as Bland–Altman analysis [10] was used to examine whether these two measurements are interchangeable. en, we examined whether waist circumference (WC) measurement by bioelectrical impedance analysis (BIA) correlates with Locomotive syndrome (LS) risk according to sex in a large-scale prospective general health checkup population
In males and females, WC measured by BIA showed a very strong correlation with WC measured manually based on the Spearman r and almost perfect agreement based on ICC. e Bland–Altman analysis showed that bias (BIA-manual) was negative overall (− 2.024), for males (− 1.418) and for females (− 2.460), suggesting an underestimation of the BIA compared with the manual methods

Summary

Introduction

In Japan, the average life expectancy has increased in parallel with advanced medical advances. e importance of preventive medicine is implied by phenomena such as prolonged hospitalization due to decreased mobility in elderly people.In 2007, the Japanese Orthopaedic Association (JOA) proposed the concept of “locomotive syndrome” (LS). E importance of preventive medicine is implied by phenomena such as prolonged hospitalization due to decreased mobility in elderly people. In 2013, the JOA proposed the following tests to estimate the risk of LS: the two-step test; the stand-up test; and a 25question geriatric locomotive function scale (GLFS-25). LS risk levels are categorized into two stages: 1 and 2. Risk level 1 represents the population in whom movement function has started to decline and for whom measures to prevent deterioration to LS should be instituted [2, 3]. Diagnosis of LS risk level is important to permit treatment of these conditions, and investigation of the relationships with LS risk from a broad perspective is necessary [4, 5]

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