Shaheen Abida, Javed Nismat, Azam Fahad, Liaquat Afrose, Khan Moosa, Alam Syed Mahboob, Mumtaz Sana
Pharmacology and Therapeutics, Shifa College of Medicine, Shifa Tameer-E-Millat University, Islamabad, PAK.
Medicine, Shifa International Hospital, Shifa Tameer-E-Millat University, Islamabad, PAK.
Cureus. 2019 May 22;11(5):e4723. doi: 10.7759/cureus.4723.
Objectives There are many different ways to measure body composition and bioelectric impedance is one of the most popular methods to measure body ratios. The navy-seal formula is another simple way of measuring body fat ratio which takes into account simple variables such as gender, weight, height, waist, hip and neck circumference. The objective of our study was to compare the results of body fat composition by these two methods. Materials and methods Height and weight were measured in 85 study participants using a wall-mounted stadiometer and digital scale. Body composition measurements were recorded using a simple measuring tape. Participants were then asked to stand on the electrical impedance machine to determine the body fat and muscle mass. Data were analyzed on IBM's statistical package for the social sciences (SPSS) version 23 (IBM, Armonk, NY). Results The Navy-seal formula had slightly higher values for both muscle mass and body fat ratio in both genders and across all body mass index (BMI) categories. Body fat ratio and muscle mass of both genders were similar in underweight, normal, over weight and obese participants. In males, the results on two instruments showed more similarity with the increase in BMI, whereas, in females, the results of the two methods were more similar in the normal weight category. Conclusion Navy-seal formula and bioelectrical impedance are both simple and reliable instruments to measure body composition in adults. The navy-seal formula can be used to screen individuals with high-fat body fat ratio whereas bioelectric impedance can be used to measure the body composition for personal monitoring.
目的 测量身体成分有多种不同方法，生物电阻抗是测量身体比例最常用的方法之一。海军海豹突击队公式是另一种测量体脂率的简单方法，它考虑了性别、体重、身高、腰围、臀围和颈围等简单变量。我们研究的目的是比较这两种方法测量身体脂肪成分的结果。
材料与方法 使用壁挂式身高计和数字秤对85名研究参与者测量身高和体重。使用简单的卷尺记录身体成分测量数据。然后要求参与者站在电阻抗机器上以确定体脂和肌肉量。数据在IBM社会科学统计软件包（SPSS）第23版（IBM，纽约州阿蒙克）上进行分析。
结果 在所有性别和所有体重指数（BMI）类别中，海军海豹突击队公式在肌肉量和体脂率方面的值略高。体重过轻、正常、超重和肥胖参与者中，两性的体脂率和肌肉量相似。在男性中，随着BMI增加，两种仪器的结果显示出更多相似性，而在女性中，两种方法的结果在正常体重类别中更相似。
结论 海军海豹突击队公式和生物电阻抗都是测量成年人身体成分的简单可靠工具。海军海豹突击队公式可用于筛查高脂肪体脂率的个体，而生物电阻抗可用于测量身体成分以进行个人监测。
