Judul: Physical Activity, Body Composition, Nutrients Intake, and Nutritional Status of Adult Men in Sukajadi Village
Abstrak: Obesitas di perdesaan berhubungan dengan rendahnya aktivitas fisik, peningkatan komposisi tubuh, asupan dan status gizi. Tujuan penelitian ini adalah menganalisis hubungan asupan zat gizi, tingkat aktivitas fisik, dan status gizi dengan komposisi tubuh laki-laki dewasa di Desa Sukajadi. Penelitian ini dilaksanakan pada bulan Oktober 2022-Februari 2023 pada 73 orang subjek dengan desain studi cross-sectional. Pengumpulan data dilakukan melalui wawancara langsung menggunakan kuesioner, pengukuran antropometri dan komposisi tubuh menggunakan microtoise dan Bioelectrical Impedance Analysis (InBody 270). Persentase subjek dengan tingkat aktivitas fisik rendah, sedang, dan tinggi berturut-turut sebesar 39,7%, 34,2%, dan 26,1%. Sebagian besar subjek (47,9%) memiliki persen lemak tubuh dalam kategori normal dan 11,0% subjek obesitas. Sebagian besar subjek (68,5%) memiliki fat mass index normal dan 23,3% subjek tergolong lebih. Sebagian besar subjek (50,7%) memiliki fat-free mass index normal dan 42,5% subjek tergolong kurang. Rata-rata asupan energi subjek (2209±978 kkal), protein (64,2±29,4 g), lemak (56,7±35,6 g), dan karbohidrat (347,5±155,3 g). Rata-rata tingkat kecukupan energi (82,8±38,3%), protein (77,3±37,7%), lemak subjek (19,1±12,1%), dan karbohidrat (52,1±24,1%). Sebagian besar subjek (54,8%) memiliki status gizi berdasarkan Indeks Massa Tubuh (IMT) dalam kategori normal dan 11,0% subjek obesitas. Status gizi berdasarkan IMT memiliki korelasi yang signifikan terhadap persen lemak tubuh, fat mass, dan fat-free mass (p<0,05)., Obesity in rural areas is associated with physical inactivity, and increases in body composition, nutrient intake, and nutritional status. This study aims to analyze the relationship between nutrient intake, physical activity level, and nutritional status with the body composition of adult men in Sukajadi Village. This study was conducted in October 2022-February 2023 on 73 subjects with a cross-sectional study. Data was collected by direct interviews using a questionnaire, anthropometric measurements and body composition using microtoise and Bioelectrical Impedance Analysis (InBody 270). The percentage of subjects with light, active, and vigorous categories of physical activity levels respectively are 39.7%, 34.2%, and 26.1%. Most of the subjects (50.7%) have a fat mass index in the normal category and 23.3% of the subjects are in the high category. Most of the subjects (50.7%) have a fat-free mass index in the normal category and 42.5% of the subjects are in the low category. The average subjects’ energy intake (2209±978 kcal), protein intake (64.2±29.4 g), fat intake (56.7±35.6 g), and carbohydrate intake (347.5±155.3 g). The average subjects’ energy adequacy level (82.8±38.3%), protein adequacy level (77.3±38.3%), fat adequacy level (19.1±12.1%), and carbohydrate adequacy level (52.1±24.1%). Most of the subjects (54.8%) have nutritional status based on BMI in the normal category and 11.0% of the subjects are in the obese category. Nutritional status based on BMI have a significant correlation with the percentage of body fat, fat mass, and fat-free mass (p<0.05).
Keyword: adult men, body composition, nutrients intake, nutritional status, obesity, phsyical activity

Judul: Consumption Pattern, Smoking Habits, and Blood Lipid Profile of Adult Men in Sukajadi Village
Abstrak: Tujuan penelitian ini adalah menganalisis pola konsumsi, kebiasaan merokok, dan profil lipid darah laki-laki dewasa di Desa Sukajadi. Penelitian ini dilaksanakan pada bulan Oktober 2022-Februari 2023 pada 73 orang subjek laki-laki yang dipilih secara purposive dengan desain studi cross-sectional. Pengumpulan data dilakukan melalui wawancara dan pengambilan sampel darah. Jenis makanan pokok, makanan tinggi lemak, makanan manis, minuman manis, sayur, dan buah yang paling sering dikonsumsi subjek adalah nasi, tempe goreng, wafer, kopi, ketimun, dan pisang. Rata-rata Tingkat Kecukupan Energi (TKE) subjek sebesar 82,8±38,3%, terkategori defisit ringan, sementara rata-rata Tingkat Kecukupan Karbohidrat (TKK) dan Tingkat Kecukupan Lemak (TKL) subjek terkategori defisit ringan (masing-masing sebesar 81,3±39,3% dan 84,8±53,8%). Rata-rata Tingkat Kecukupan Lemak Jenuh (TKLJ) dan Tingkat Kecukupan Kolesterol (TKKol) subjek terkategori cukup (masing-masing sebesar 47,1±28,4% dan 58,5±53,3%), sementara rata-rata Tingkat Kecukupan Serat (TKS) subjek terkategori kurang yaitu sebesar 22,8±15,7%. Mayoritas subjek (76,7%) merupakan perokok aktif. Rata-rata kadar kolesterol total subjek adalah sebesar 211±44 mg/dL, terkategori sedikit tinggi. Rata-rata kadar kolesterol LDL dan kolesterol HDL subjek terkategori mendekati optimal (masing-masing sebesar 115±29 mg/dL dan 47±10 mg/dL. Rata-rata kadar trigliserida subjek terkategori normal, yaitu sebesar 130±70 mg/dL. Terdapat korelasi yang signifikan (p<0,05) antara kebiasaan merokok dengan kadar kolesterol total dan kolesterol LDL., The purpose of this study was to analyze the consumption patterns, smoking habits, and blood lipid profiles of adult men in Sukajadi Village. This study was conducted in October 2022-February 2023 on 73 purposively selected men subjects with a cross-sectional study design. Data collection was done through interviews and blood sampling. The staple foods, high-fat foods, sweet foods, sugary drinks, vegetables, and fruits most often consumed by the subjects were rice, fried tempeh, wafers, coffee, cucumbers and bananas. The average energy adequacy level (TKE) of the subjects was 82.8±38.3%, categorized as mild deficit, while the average level of carbohydrate adequacy (TKK) and fat adequacy level (TKL) of the subjects was categorized as mild deficit (respectively at 81.3±39.3% and 84.8±53.8%). The average saturated fat adequacy level (TKLJ) and cholesterol adequacy level (TKKol) of the subjects were categorized as sufficient (respectively at 47.1±28.4% and 58.5±53.3%), while the average fibre adequacy level (TKS) of subjects categorized as the deficit was 22.8±15.7%. The majority of subjects (76.7%) were active smokers. The average total cholesterol level of the subjects was 211±44 mg/dL, categorized as a borderline. The subjects' average LDL and HDL cholesterol levels were categorized as near-optimal (respectively at 115±29 mg/dL and 47±10 mg/dL). The average triglyceride level of subjects was categorized as normal, which was 130±70 mg/dL. There was a significant correlation (p<0.05) between smoking habits and total cholesterol and LDL cholesterol levels.
Keyword: blood lipid profile, food consumption, nutrients adequacy level, smoking habits

Judul: Penentuan Nilai Eigen dan Vektor Eigen dari Matriks Tridiagonal 2-Toeplitz dengan Pendekatan Polinomial Chebyshev
Abstrak: The eigenvalues and eigenvectors of a matrix can be determined by finding its characteristic polynomials. The characteristic polynomials of a tridiagonal 2-Toeplitz matrix is shown to be closely connected to polynomials which satisfy the Chebyshev recurrence relationship. If the order of the matrix is odd, then the eigenvalues are found explicitly in terms of the Chebyshev zeros and the eigenvectors are found in terms of the polynomials satisfying the recurrence relationship. For even ordered matrices, the situation is more complicated. The problem in these cases is that although the Chebyshev recurrence formula is still applied, its initial values are not generating Chebyshev polynomials
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