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Dampak dari ketidakpuasan terhadap bentuk tubuh menjadi faktor pendorong untuk melakukan diet penurunan berat badan. Apabila tidak diimbangi dengan pengetahuan yang cukup, para remaja dapat terjebak dalam diit yang salah, menyebabkan penurunan status gizi, kekurangan zat besi, dan lain-lain. Penelitian ini bertujuan untuk mengetahui hubungan persepsi body image terhadap status gizi siswa SMPN 8 Pekanbaru. Jenis penelitian ini adalah deksriptif dengan desain cross sectional. Sampel penelitian adalah siswa SMPN 8 Pekanbaru berjumlah 160 siswa yang dipilih secara random. Persepsi body image diukur menggunakan kuisioner BSQ34 sedangkan status gizi menggunakan timbangan dan microtoise. Analisa data berupa uji regresi sederhana. Hasil penelitian menunjukkan korelasi positif antara persepsi body image dengan status gizi (IMT/U) (p=0,000; r=0,526), setiap kenaikan 1 poin skor persepsi body image, diprediksikan status gizi (IMT/U) meningkat sebesar 0,03kg/m2. Jumlah responden yang menyatakan puas terhadap bentuk tubuhnya sebesar 62,5% dan yang tidak puas 37,5%. Status gizi responden adalah 3,1% sangat kurus, 6,3% kurus, 63,8% normal, 18,1% gemuk dan 8,8% obesitas. Perlunya pendekatan psikologi dari sekolah dalam meningkatkan kepercayaan diri siswa terhadap bentuk tubuh masing-masing.

Penelitian mengenai pengukuran massa lemak menggunakan alat Skinfold Caliper (SKF) dan Bioelectrical Impedance Analysis (BIA) pada atlet sudah banyak dilakukan. Keakuratan metode skinfold caliper tergantung pada teknik pengukuran, keahlian, dan pengalaman dari pengukur, sedangkan metode BIA lebih ringkas, hemat waktu, dan mudah digunakan. Tujuan Penelitian adalah untuk menganalisis perbedaan rata-rata persentase massa lemak tubuh antara menggunakan metode SKF dengan BIA pada atlet binaraga, angkat berat, dan angkat besi.  Desain penelitian crossectional. Data dikumpulkan secara langsung terhadap 30 atlet (21 laki-laki dan 9 orang perempuan). Pengukuran dilakukan dengan mengukur berat badan, tinggi badan, persen lemak tubuh menggunakan BIA, dan SKF. Perbedaan rata-rata persentase lemak tubuh dianalisis menggunakan uji multiple paired t-test. Hasil penelitian menujukkan adanya perbedaan rata- rata persentase lemak tubuh pada atlet menggunakan metode SKF dan BIA. Secara umum dan berdasarkan jenis kelamin, jenis olahraga, dan IMT terdapat perbedaan yang bermakna (p<0,05). Rata- rata persentase massa lemak tubuh menggunakan kaliper skinfold adalah 18,91 sedangkan menggunakan BIA adalah 24, 27. Berurutan persentase lemak tubuh menggunakan metode SKF  pada atlet binaraga, angkat berat, angkat besi, laki-laki, perempuan, status gizi normal, gizi lebih, moderate obes, dan severe obes yaitu : 12,05; 21,77; 17,67;17,31; 22,67;11,75; 17,83; 23,05; dan 34,99. Persentase rata-rata massa lemak tubuh menggunakan metode BIA yaitu 15,34; 28,58; 21,59; 21,99; 29,60; 16,47; 23,69; 29,32; dan 36,00. Kesimpulan penelitian terdapat perbedaan rata- rata persentase lemak tubuh pada atlet menggunakan metode SKF dan BIA secara umum dan berdasarkan jenis kelamin, jenis olahraga, dan IMT, kecuali pada kelompok severe obese Kata Kunci: Atlet, biolelectrical impendance analysis (BIA), gizi, kaliper skinfold, massa lemak tubuh

Late adolescence (17-20 years) is when a child has made a career decision in the future. Body image in adolescents associated with eating disorders and psychological problems such as depression. Nutritional status is well aligned with the quality of life of adolescents. This study aims to determine the body image, dietary behavior, and quality of life in the period of late adolescence students of the Faculty of Medicine, University of Riau. This study was a crosssectional analytical study conducted at the end of the 87 teenage students of the Faculty of Medicine, University of Riau. Selection of the subject of research conducted with total sampling. Measurements made with the body image questionnaire silhouettes body image, dietary behavioral data with the questionnaire (eating attitude test) / EAT-26, and the data Quality of Life with WHO-QOL questionnaire. Furthermore, the data presented descriptively. Of the 87 respondents there were 25.3% (22) male subjects and 74.7% (65) female subjects. Based on BMI, there are more nutritional status (overweight and obesity) of 27.6%, less nutritional status (underweight) 17.2%. Based on abdominal circumference there are 25.3% subjects felt obesity there are 51.7% research subjects who felt dissatisfied with her body image. A total of 36.8% of research subjects perceive their bodies emaciated, 19.5% perceive overweight and 1.2% obese perceived body image. A total of 9.2% of the subjects experienced the possibility of eating behavior disorders. There are 43.7% of research subjects who have less quality of life.

Dental caries and gingivitis are often found in Indonesia primary school students. The data from Puskesmas MuaraFajar noted, only 14.06% of Elementary Students who received dental care and 52% of them required treatment. TheObjective of study was to assess the students’ dental health knowledge and behavior level of SDN 174 Pekanbaruand to associate with dental health status, including dental caries, DMF-T OHI-S, Debris Index (DI-S) and CalculusIndex (CI-S). The methodology used a cross-sectional survey research design. The sample were 61 students whotaken by all students in grade 6 of SDN 174 Muara Fajar Pekanbaru. Examination of student’s dental health statuslike dental caries, DMF-T OHI-S, Debris Index (DI-S) and Calculus Index (CI-S) was made, and followed by askingthe knowledge and behavior questionnaire about dental health. Processed data with the statistical program SPSSversion 17. the data presented in the narrative, univariate analysis to look at the frequency distribution of the data,and bivariate analysis to find an association between the knowledge and behavior to the dental health status. Theresults showed that most characteristics respondents were female (50.8%), aged 12 years (41%) and have enoughnutrition (68.9%). Then there were 25 students (41%) having less knowledge about dental health and as many as 25students (41%) have the less behavior about dental health. While the results of the examination of the dental healthstatus showed as many as 24 students (39%) had problems in the DI-S, 12 students (20%) had problems in the CI-S,and as many as 26 students (43%) had problems in dental health (OHI -S). There was no relationship betweenknowledge of dental health to dental health status, but there is a relationship regarding student behavior of dentalhealth to dental health status(p = 0.02, OR = 3.4).