Judul: Konsumsi makanan atlet bulutangkis nasional di Pemusatan Latihan Nasional Cipayung
Abstrak: Olahraga merupakan salah satu aktivitas manusia yang banyak mengeluarkan tenaga dan energi. Salah satu olahraga yang memerlukan persediaan tenaga dan energi memadai adalah bulutangkis. Prestasi optimal atlet bulutangkis tidak hanya tergantung dari keterampilan tetapi stamina dan kondisi tubuh prima. Agar stamina dan kondisi atlet menjadi prima diperlukan asupan makanan berkualitas yang memenuhi kecukupan. Kecukupan gizi atlet dapat tercapai bila pihak penye- lenggaraan makan atlet memperhatikan susunan menu yang akan dikonsumsi para atlet dan kebiasaan makan atlet juga baik yaitu membiasakan diri mengkonsumsi makanan bergizi, bervariasi dan jumlah berimbang. Penelitian ini bertujuan mengetahui konsumsi makanan atlet bulutangkis nasional di Pemusatan Latihan Nasional Cipayung, Jakarta Timur. Secara khusus penelitian ini bertujuan untuk: (1) mengetahui konsumsi dan tingkat konsumsi energi dan zat gizi (karbohidrat, protein, lemak, vitamin C, vitamin B1 dan zat besi) atlet bulutangkis nasional, (2) mengetahui sumbangan konsumsi energi dan zat gizi (karbohidrat, protein, lemak, vitamin C, vitamin B1 dan zat besi) makanan pelatnas dan makanan luar pelatnas terhadap kecukupan gizi atlet bulutangkis nasional dan (3) mengetahui status gizi atlet bulutangkis nasional. Penelitian ini dilaksanakan di Pemusatan Latihan Nasional Bulutangkis Cipayung, Jakarta Timur. Contoh penelitian sebanyak 31 orang yang terdiri dari 16 orang laki-laki dan 15 orang perempuan. Data yang dikumpulkan meliputi data primer dan data sekunder. Data primer yang dikumpulkan meliputi identitas dan kebiasaan makan atlet dilakukan dengan cara pengisian kuesioner dan wawancara, data konsumsi pangan diperoleh dari recall selama dua hari, data penyelenggaraan makan diperoleh melalui wawancara dan pengamatan langsung dan data antropometri diperoleh dengan mengukur langsung. Sedangkan data sekunder meliputi keadaan umum tempat penelitian dan data prestasi masing-masing atlet selama satu tahun terakhir.
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Judul: Hubungan Konsumsi Pangan dan Status Gizi dengan Tingkat Kebugaran Atlet Taekwondo Remaja di Pemusatan Latihan Nasional Cipayung, Bogor
Abstrak: The general objective of study was to analyze food consumption, adequacy ratio, nutritional status, and fitness level of adolescents taekwondo athletes in Centralization of National Training Cipayung, Bogor. The research used cross sectional study design with 23 adolescents athletes as samples. The primary data included characteristic of samples, nutritional status by anthropometry (body mass index), and food consumption. The secondary data included fitness level by bleep test (VO2 max values), sit and reach test (flexibility), sit up and squat jump (muscle endurance), and overview of the study site which was Centralization of National Training. The study showed that overall athletes has normal nutritional status. Most athletes were lack of sufficient levels of energy and protein. There was positive correlations between the ages of athletes with flexibility (p<0,05, r=0,456) and muscle endurance (sit up test) (p<0,05, r=0,456). The correlations between with fitness level (VO2 max) was positive significantly correlated (p<0,05, r=0,456).
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Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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