All students gave verbal and written consent after being informed about the nature of study and measurements to be done. This was a cross-sectional study conducted on 85 medical students of Shifa College of Medicine in Islamabad, Pakistan, who volunteered for the study. With this background the aim of our study was to compare the results of the US Navy Seal formula and bioelectrical impedance methods to assess the body fat percentage in a group of medical students. This method for calculating body fat ratio is convenient, inexpensive and is very less time consuming. Calculation of body for males is by using the formula of 86.010 x log10 (abdomen - neck) - 70.041 x log10 (height) + 36.76 while for females it is 163.205 x log10 (waist + hip - neck) - 97.684 x log10 (height) - 78.387. Īnother simpler way of measuring body fat ratio is by using the Navy-seal formula which only requires simple variables such as age, gender, height, body weight and circumferences of waist, hip and neck. Body composition, the measurement of body fat in relation to lean body mass is calculated from the difference in conductivity as fat-free body mass offers minimal impedance to electrical signals owing to a large amount of water and electrolytes whereas adipose tissue shows very low conductivity to electrical current. ![]() One of the simplest methods to measure body fat percentage is using bioelectrical impedance analysis (BIA), which underpins the principle of opposing electric current through different body tissues. Most of these methods are quite costly and time consuming so there is a need to develop a simpler way to assess body fat ratios. īody fat can be measured by different means such as skin calipers, bioelectric impedance, hydrostatic weighing, Air-Displacement Plethysmography and Dual Energy X-Ray Absorptiometry (DEXA). Even if the overall weight is within normal ranges, high body ratio can still increase the risk of insulin resistance, central obesity, elevated triglyceride levels, elevated blood pressure, proinflammatory and prothrombin state. Body weight alone is not a very good indicator of health as its measurement cannot distinguish between the weight of body fat and weight of lean body mass or muscle. There has recently been a gradual rise in the global prevalence of obesity and many associated health problems such as hypertension insulin resistance, and type 2 diabetes mellitus and dyslipidemia. 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. Navy-seal formula and bioelectrical impedance are both simple and reliable instruments to measure body composition in adults. 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. 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. Data were analyzed on IBM's statistical package for the social sciences (SPSS) version 23 (IBM, Armonk, NY). Participants were then asked to stand on the electrical impedance machine to determine the body fat and muscle mass. Body composition measurements were recorded using a simple measuring tape. Height and weight were measured in 85 study participants using a wall-mounted stadiometer and digital scale. The objective of our study was to compare the results of body fat composition by these two methods. ![]() 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. ![]() There are many different ways to measure body composition and bioelectric impedance is one of the most popular methods to measure body ratios.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |