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Abstrak :
ABSTRACT
The objectives of this study were 1) to quantify the differences in body densities and percent body fat using various methods for evaluating body composition (e.g., underwater weighing (UWW), air displacement plethysmography (ADP), skinfold caliper (SKF) measurement, ultrasound (US), bioelectrical impedance analysis (BIA), and dual-energy x-ray absorptiometry (DXA)), and 2) to examine the relationship between trends of the differences in body density and percent body fat obtained by these methods and characteristics of morphology and body composition. To this end, the body compositions of 73 healthy male adults were measured using UWW, ADP, SKF, US, and BIA. Twenty-seven of these 73 subjects underwent further measurement using DXA. Differences in body densities determined with ADP, SKF, and US were compared with those measured using UWW as a reference, and the differences in percent body fat estimated with UWW, ADP, SKF, US and BIA were compared with those measured by DXA as a reference. The results of this study indicate that 1) ADP is useful as a method for evaluating body density, as the results differed insignificantly from the reference method and showed no systematic errors due to differences in morphological characteristics and body composition, and 2) UWW measurements exhibited the smallest difference in percent body fat from the reference method, however, more than in any other method, there were systematic errors due to differences in morphological characteristics and body composition, specifically, trunk composition.

Abstrak :
Obesitas sentral merupakan salah satu faktor risiko terjadinya berbagai masalah kesehatan seperti penyakit kardiovaskular. Penelitian ini dilakukan untuk mengetahui faktor- faktor yang berhubungan dengan obesitas sentral. Penelitian ini menggunakan desain studi cross-sectional pada 83 orang karyawan laki- laki bagian produksi di PT. Semen Padang Sumatera Barat pada bulan April- Mei 2017. Pengambilan data dilakukan dengan pengukuran berat badan, tinggi badan, persen lemak tubuh, lingkar perut, dan pengisian kuesioner. Hasil penelitian menunjukkan 50,6 responden mengalami obesitas sentral. Berdasarkan analisis bivariat diketahui bahwa terdapat hubungan bermakna antara IMT, persen lemak tubuh, aktivitas fisik, asupan energi, asupan protein, asupan lemak, dan asupan serat dengan obesitas sentral. ......Abdominal obesity is one of the risk factors for various health problems such as cardiovascular disease. This study was conducted to assess the association of risk factors for abdominal obesity. This study used cross sectional study design on 83 male employees at PT. Semen Padang Sumatera Barat in April May 2017. Data collection was done by measuring body weight, height, percent body fat, abdominal circumference, and filling questionnaire. The results showed 50.6 of respondents had abdominal obesity. Based on bivariate analysis known that there were a significant relationship between BMI, percent body fat, physical activity, energy intake, protein intake, fat intake, and fiber intake with abdominal obesity.

Abstrak :
Body mass index and percent body fat are two parameters used to assess human body composition , which has several advantages for clinical practice, sport, growth and normal population as well...