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Kata kunci : Antropometri, Bioelectrical Impedance Analysis (BIA), Gizi lebih, IMT/U, Persen lemak tubuh n
Accurate measurement of body fat percentage as Dual-energy X-ray Absorptiometry (DXA), hydrostatic weighing, Magnetic Resonance Imaging (MRI), ultrasound, and Bioelectrical Impedance Analysis (BIA) is expensive and difficult to used by society. Anthropometric measurement is more simple and easy to use for evaluation of nutritional status. This study aims to obtaine an accurate anthropometric measurement to determine overnutrition with BIA as a golden standard. This study is a validation study conducted on elementary school children grades 4 and 5 (9-11 years old) in Elementary School Nurul Fikri Depok. The results showed that the BMI for age has the highest correlation coefficient (r=0.934) compared with other measurements. In addition, BMI for age also has the best validity (AUC 0.849; Se 82.69%; Sp 69.84%; 69.35% PPV; NPV 83.02%; LR + 2.7; LR- 0.2) with a cut-off +0.5 SD.
Keywords: Anthropometry, Bioelectrical Impedance Analysis (BIA), BMI for age, overnutrition, percentage body fat
Abstrak
Alat ukur yang valid diperlukan untuk mengetahui status gizi lebih pada remaja puteri sehingga dapat diambil tindakan yang tepat, cepat dan mencegah kebingungan pengguna alat dalam menentukan alat yang tepat untuk menentukan status gizi lebih pada remaja puteri. Selain itu, alat yang harganya murah, mudah, dan cepat dalam pengoperasiannya juga diperlukan. Tujuan dari penelitian ini adalah untuk mendapatkan model prediksi baru yang memiliki validitas optimal untuk memperkirakan persen lemak tubuh siswi MTs dan MA Multiteknik Yayasan Asih Putera Kota Cimahi tahun 2012 sehingga dapat diketahui status gizi lebihnya. Penelitian ini juga mengevaluasi validitas pengukuran antropometri (IMT, IMT WHO (Z Score), Skinfold Thickness (ST), dan Lingkar Pinggang (LP)) dan model prediksi (Slaughter, Deurenberg, Lee, dan Chan) jika dibandingkan dengan Persen Lemak Tubuh (PLT) BIA sebagai gold standard. Desain penelitian adalah cross sectional (potong lintang) dengan pendekatan kuantitatif observational. Sampel yang diambil sebanyak 110 siswi dengan menggunakan desain stratifikasi proporsi. Hasil penelitian menunjukkan bahwa rerata persen lemak tubuh responden adalah 26.51 % ± 5.48 %. Model prediksi yang didapatkan dari hasil multivariat adalah model prediksi Khairani (PLT Khairani = 0,991 IMT + 0,069 ST + 0,249 U - 1,703). Berdasarkan hasil uji validasi, model prediksi Khairani memiliki validitas optimal jika dibandingkan dengan model prediksi lainnya. IMT memiliki validitas optimal jika dibandingkan dengan seluruh pengukuran antropometri dan model prediksi. IMT dapat dipertimbangkan sebagai alat ukur untuk menentukan status gizi lebih pada siswi MTS dan MA Yayasan Asih Putera karena memiliki validitas yang optimal, lebih mudah dan cepat dalam pengoperasiannya, harganya relatif murah dan tidak invasive.
The valid measurement tools needed to identify the overnutritional status of teenage girls in order to take the right action immediately and prevent the ambiguity in choosing the right measurement tools for the users. Beside those, the cheap price, easiness and quickness to use the measurement tools needed also. The purpose of this study was to get the new prediction model which had optimum validity for estimating body fat percentage of school girls from MTs and MA Multiteknik Yayasan Asih Putera Cimahi 2012 in order to identify their overnutritional status. This study also evaluated validation of anthropometric measurements (Body Mass Index (BMI), BMI WHO (Z Score), Skinfold Thickness (ST), and Waist Circumference (WC)) and several prediction models (Slaughter, Deurenberg, Lee, and Chan) against body fat percentage of Bioelectrical Impedance Analysis (BIA) as a gold standard. The design of this study was a cross sectional one with a quantitative observational approach. Quantity of sample was 110 school girls which taken by stratified proportional desain. The result of study showed that mean of body fat percentage of respondents was 26.57 % ±5.20 %. The prediction model which got from the multivariate analysis was Khairani model prediction (MP Khairani = 0,991*BMI + 0,069*ST + 0,249*Age - 1,703). Based on validation test, Khairani model prediction has optimum validity if compared with other prediction models. BMI has optimum validity if compared with other antropometric measurements and prediction models. BMI can be considered as a measurement tool for identifying overnutritional status of school girls?s MTs and MA Yayasan Asih Putera because of it has optimum validity, easiness and quickness in operation, less cost, and noninvasive.
Tesis ini merupakan penelitian cross sectional yang bertujuan membuat model prediksi persen lemak tubuh untuk remaja laki-laki usia 12-19 tahun (n = 111), dengan melakukan studi validasi pengukuran antropometri dan model Prediksi (Slaughter, Deurenberg, Lee dan Chan) terhadap persen lemak tubuh BIA. Pada penelitian ini juga menjelaskan korelasi antara pengukuran antropometri (IMT WHO, skinfold thickness dan lingkar pinggang) serta model prediksi (Slaughter, Deurenberg, Lee dan Chan) dengan persen lemak tubuh BIA. Pengambilan sampel dilakukan dengan teknik stratified proportional. Penelitian ini dilakukan pada siswa MTs dan MA. Multiteknik Yayasan Asih Putera kelas 7-12.
Hasil penelitian menunjukkan IMT WHO memiliki korelasi paling kuat dengan persen lemak tubuh BIA (r = 0,804) diantara pengukuran antropometri yang digunakan. Model Prediksi IMT WHO memilki sensitivitas paling tinggi yaitu 94%, diikuti dengan model prediksi IMT WHO dan umur (94%) dan model prediksi Sitoayu. Seluruh variabel memiliki korelasi yang signifikan dengan persen lemak tubuh BIA (p < 0,0005). Hasil analisis multiregresi menunjukkan variabel yang dominan adalah IMT WHO, skinfold thickness, dan umur dengan model prediksi persen lemak tubuh baru (Sitoayu) = 23,28 + 1,56*IMT WHO + 0,13*ST - 0,62*U. Model prediksi ini memiliki AUC 0,937 dan nilai sensitivitas yaitu 84%.
The primary purpose of this cross-sectional study to develop percentage body fat prediction model for boys aged 12-19 years (n = 111), by conducting a validation study anthropometric measurements and predictions model of body fat percentage (Slaughter, Deurenberg, Lee and Chan) to percent body fat BIA. In this study also examined the correlation between anthropometric measurements (WHO BMI, skinfold thickness and waist circumference) and predictions model (Slaughter, Deurenberg, Lee and Chan) with percent body fat BIA with stratified proportional design. The research was carried out on students MTs and MA. Multiteknik Yayasan Asih Putera grade 7-12.
Bivariat analysis showed BMI WHO has the strongest correlation with percent body fat BIA (r = 0.804) between the anthropometric measurements were used. The Prediction model IMT WHO also has the best sensitivity (94%), the second is IMT WHO and Age (94%) and the third is Sitoayu. All variables have a significant correlation with percent body fat BIA (p < 0,0005). Multiregresi analysis results indicate that the dominant variable is the WHO BMI, skinfold thickness and age with the predictions model of percent body fat Sitoayu = 23,28 + 1.56 *BMI WHO + 0.13 * ST - 0.62 *Age. This prediction model has AUC 0,937 and the best sensitivity value of 84%.
Kata kunci: Persen lemak tubuh, bia, overweight, remaja, imt/u
Accurate instruments to measure percent body fat are expensive and haved ifficult procedures, so another alternative to measure percent body fat are Needed. This study aims to obtain the most accurate anthropometric measurement in evaluating overweight with bia as a golden standard. This study was conducted in april-may 2017 and the respondents are adolescent in senior high school student of al-azhar 3 jakarta (14-17 years old) with a total number of respondents were 107 boys and 71 girls. This study is a cross sectional design. The results showed that bmi/age had the highest coefficient correlation value in both sexes (r=0,88). In addition, bmi/age also had the best validity in detecting overweight in both sexes, with a cut-off points +0,77 sd (se:86,6%; sp:85,0%; Ppv:89%; npv: 81%; lr+:5,77; lr-:0,16) in boys and +0,09 sd (se:93,1%; Sp:95,0%; ppv:95%; npv:96%; lr+:13,80; lr-:0,05) in girls.
Keywords: Percent body fat, bia, overweight, adolescent, bmi/age
This study aims to determine the factors associated with the consumptionof probiotic foods in female students of Nutrition Program of Public HealthFaculty at the University of Indonesia in 2011. This study is a quantitative studyusing cross-sectional study design and sampling is done by saturated sampling ofstudents at Nutrition Program Study throughout the year. The result showed finalconsumption of probiotic foods in > 4 weeks ago are 37,4%, followed byrespondents who consumed probiotic foods at < 2 weeks ago are 34,6%,consumption of 2-4 weeks ago are 27,9%. Students that promote the consumptiontheir own initiative are 86,3%, most claim to feel the benefits of probiotic foodsconsumption are 56,9%, did not see a suggestion/user of products are 72,1%, andthe respondents consume two brands of probiotic food products are 50,3%. Anaverage score of knowledge about probiotics is 38,84 points from 80 maximumpoints. A total of 44,7% had an allowance (per month) of Rp.0-Rp.500.000, anaverage score of physical activity are is 0,7184, no history of constipation in thepast month are 83,1%, and has an average 29,15 time in a month of exposure tomedia promotion of probiotics.A significant association was only found on the variable of physicalactivity (p=0,016), whereas other variables had no significant relationship whichis the relationship of food consumption of probiotic foods as a dependent variablewith knowledge, (p=0,173), large pocket money (p=0,695), history of constipationin the past month (p=0,915), and media promotion (p=0,833) as independentvariables. Further research is needed in different age groups with the addition ofthe study variables such as eating habit.Key words: probiotic foods
