Shakibaee Abolfazl, Faghihzadeh Soghrat, Alishiri Gholam Hossein, Ebrahimpour Zeynab, Faradjzadeh Shahram, Sobhani Vahid, Asgari Alireza
Exercise Physiology Research Center, Baqiyatallah University of Medical Sciences, Tehran, IR Iran.
Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, IR Iran.
Asian J Sports Med. 2015 Dec;6(4):e23206. doi: 10.5812/asjsm.23206. Epub 2015 Dec 1.
The body composition varies according to different life styles (i.e. intake calories and caloric expenditure). Therefore, it is wise to record military personnel's body composition periodically and encourage those who abide to the regulations. Different methods have been introduced for body composition assessment: invasive and non-invasive. Amongst them, the Jackson and Pollock equation is most popular.
The recommended anthropometric prediction equations for assessing men's body composition were compared with dual-energy X-ray absorptiometry (DEXA) gold standard to develop a modified equation to assess body composition and obesity quantitatively among Iranian military men.
A total of 101 military men aged 23 - 52 years old with a mean age of 35.5 years were recruited and evaluated in the present study (average height, 173.9 cm and weight, 81.5 kg). The body-fat percentages of subjects were assessed both with anthropometric assessment and DEXA scan. The data obtained from these two methods were then compared using multiple regression analysis.
The mean and standard deviation of body fat percentage of the DEXA assessment was 21.2 ± 4.3 and body fat percentage obtained from three Jackson and Pollock 3-, 4- and 7-site equations were 21.1 ± 5.8, 22.2 ± 6.0 and 20.9 ± 5.7, respectively. There was a strong correlation between these three equations and DEXA (R² = 0.98).
The mean percentage of body fat obtained from the three equations of Jackson and Pollock was very close to that of body fat obtained from DEXA; however, we suggest using a modified Jackson-Pollock 3-site equation for volunteer military men because the 3-site equation analysis method is simpler and faster than other methods.
身体成分会因不同的生活方式（即热量摄入和热量消耗）而有所不同。因此，定期记录军事人员的身体成分并鼓励遵守规定的人员是明智之举。已经引入了不同的身体成分评估方法：有创和无创的。其中，杰克逊和波洛克方程最为常用。
将推荐的用于评估男性身体成分的人体测量预测方程与双能X线吸收法（DEXA）这一黄金标准进行比较，以开发一个修正方程，用于定量评估伊朗军事人员的身体成分和肥胖情况。
本研究共招募并评估了101名年龄在23至52岁之间、平均年龄为35.5岁的军事人员（平均身高173.9厘米，体重81.5千克）。通过人体测量评估和DEXA扫描对受试者的体脂百分比进行评估。然后使用多元回归分析比较从这两种方法获得的数据。
DEXA评估的体脂百分比的平均值和标准差为21.2±4.3，从杰克逊和波洛克的三个3部位、4部位和7部位方程获得的体脂百分比分别为21.1±5.8、22.2±6.0和20.9±5.7。这三个方程与DEXA之间存在很强的相关性（R² = 0.98）。
从杰克逊和波洛克的三个方程获得的平均体脂百分比与从DEXA获得的体脂百分比非常接近；然而，我们建议对志愿军事人员使用修正后的杰克逊-波洛克3部位方程，因为3部位方程分析方法比其他方法更简单、更快。
