Cendekia : Jurnal Pendidikan dan Pengajaran

The Analisis Komposisi Tubuh dan Performa Fisik Siswa pada Ekstrakurikuler Bola Voli Putra di SMK Negeri 3 Sendawar

2026-07-10T11:26:06+00:00

Penelitian ini dilatarbelakangi oleh hasil observasi langsung selama kegiatan magang di SMK Negeri 3 Sendawar yang menemukan berbagai persoalan fisik pada siswa ekstrakurikuler bola voli putra, seperti berat badan yang belum ideal, massa otot yang kurang, kekuatan otot lengan yang rendah, daya ledak otot tungkai yang belum optimal, serta kelincahan dan kecepatan reaksi yang masih lemah. Penelitian ini bertujuan untuk menganalisis komposisi tubuh siswa berdasarkan Indeks Massa Tubuh dan mengetahui profil performa fisik siswa ekstrakurikuler bola voli putra. Metode yang digunakan adalah deskriptif kuantitatif dengan teknik total sampling yang melibatkan seluruh 20 siswa putra yang terdaftar aktif dalam ekstrakurikuler. Data dikumpulkan melalui enam butir tes performa fisik yang mengacu pada standar Tes Kesegaran Jasmani Indonesia, yaitu push up, sit up, vertical jump, sprint 30 meter, agility test, dan beep test, disertai pengukuran komposisi tubuh menggunakan Indeks Massa Tubuh. Data diolah secara deskriptif kemudian diuji normalitasnya sebelum dilanjutkan dengan uji korelasi Spearman. Hasil penelitian menunjukkan bahwa 80 persen siswa berada pada kategori Indeks Massa Tubuh Normal, sementara performa fisik menunjukkan pola yang tidak merata, unggul pada komponen sit up, beep test, dan vertical jump, namun lemah pada agility test, sprint 30 meter, dan push up. Uji korelasi Spearman tidak menemukan hubungan yang signifikan secara statistik antara Indeks Massa Tubuh dengan keenam komponen performa fisik tersebut. Temuan ini mengindikasikan bahwa kualitas program latihan lebih berperan dibandingkan komposisi tubuh semata dalam membentuk performa fisik siswa

The ANALISIS EFISIENSI BAHAN BAKAR DAN EMISI GAS BUANG PADA MOTOR YAMAHA MX KING 150

2026-07-03T07:40:40+00:00

Motorcycle users, especially sports bikes like the Yamaha MX King 150, are often faced with the dilemma of choosing Pertalite (RON 90) or Pertamax (RON 92). The significant price difference makes many users prefer Pertalite, even though there is no certainty regarding its impact on fuel efficiency and exhaust emissions. This study was conducted to answer this problem through direct testing that measures the effect of both types of fuel on fuel consumption and emission levels. This study uses a quantitative approach with a quasi-experimental method and a One Group Pretest-Posttest Design. One Yamaha MX King 150 motorcycle was tested sequentially using Pertalite and Pertamax. The test was carried out in two stages: measuring fuel consumption efficiency in the field using the distance traveled per liter (km/l) method, and testing exhaust emissions in the laboratory using a gas analyzer to measure CO, HC, CO₂, and NOx levels. The results showed that the use of Pertamax produced higher fuel efficiency than Pertalite. Furthermore, Pertamax produces lower CO and HC emissions, indicating a more complete combustion process. These results demonstrate that despite Pertamax's higher price, this fuel offers long-term benefits in terms of both operational efficiency and environmental impact. These findings are expected to inform the public's choice of fuel and provide input to relevant parties in formulating sustainable energy policies.

Peran Guru Pendidikan Jasmani Dalam Pembinaan Bakat Olahraga Siswa Melalui Ekstrakurikuler Bola Voli Di Sma Negeri 1 Tenggarong Seberang Tahun Pembelajaran 2025/2026

2026-07-29T21:19:14+00:00

This study aimed to determine the role of Physical Education, Sports, and Health (PE) teachers in developing students' sports talents through volleyball extracurricular activities at State Senior High School 1 Tenggarong Seberang in the 2025/2026 academic year. This study employed a descriptive qualitative research method involving the principal, Physical Education, Sports, and Health (PE) teachers, and students participating in the volleyball extracurricular program as the research subjects. Data were collected through interviews, observations, and documentation. The findings revealed that Physical Education, Sports, and Health (PE) teachers played important roles as coaches, mentors, motivators, and evaluators in developing students' sports talents. The teachers designed training programs, provided technical and character guidance, motivated students, and conducted regular evaluations of their progress. Although the program faced several challenges, including limited facilities and infrastructure, weather conditions, and funding, the volleyball extracurricular activities continued to run effectively through the support of the school and collaboration with parents. In conclusion, Physical Education, Sports, and Health (PE) teachers play a vital role in fostering and developing students' sports talents through volleyball extracurricular activities, thereby improving students' skills and sports achievements.

ANALISIS EFISIENSI DAN KESELAMATAN SAAT BERKENDARA DENGAN SEPEDA MOTOR MENGGUNAKAN MATERIAL BAN HARD COMPOUND

2026-07-11T03:49:15+00:00

Motorcycle tire material plays a crucial role in determining riding efficiency and safety. This study aims to compare soft-compound and hard-compound tires in terms of usage efficiency and safety aspects. The methodology involved performance testing under various road and weather conditions, measuring parameters such as grip, vehicle stability, wear rate, and fuel consumption. The results indicate that soft-compound tires significantly enhance riding safety, particularly regarding grip on both dry and wet roads, as well as during cornering maneuvers and emergency braking. However, soft-compound tires exhibit a higher wear rate than hard-compound tires, resulting in a shorter lifespan and potentially higher long-term operating costs. The choice between soft-compound and hard-compound tires should take into account the rider's priorities specifically, whether they value optimal safety or long-term efficiency. This study is intended to serve as a reference for riders in selecting tires that best suit their needs and riding characteristics

ANALISIS TINGKAT KETERAMPILAN PUKULAN SMASH FOREHAND DAN BACKHAND DALAM PERMAINAN TENIS MEJA PADA SISWA SMA NEGERI 2 TENGGARONG TAHUN PELAJARAN 2025/2026

2026-07-03T15:52:10+00:00

Pendahuluan : Setiap siswa untuk dapat mencapai hasil yang maksimal diperlukan penerapan menguasai teknik untuk mengembangkan atau meningkatkan kemampuan bermain tenis meja, maka harus mampu melakukan dan menguasai teknik yang sesuai dengan tuntutan yang ada dalam tenis meja. Tujuan : untuk mengetahui tingkat keterampilan pukulan smash forehand dan backhand dalam permainan tenis meja pada siswa SMA Negeri 2 Tenggarong Tahun Pelajaran 2025/2026. Metode : metode deskriptif kuantitatif dengan teknik pengumpulan data melalui tes keterampilan smash forehand dan backhand. Sampel pada penelitian ini adalah siswa laki-laki kelas XI yang berjumlah 30 orang, teknik pengambilan sampel menggunakan teknik probality sampling. Hasil : Berdasarkan penelitian menunjukkan bahwa dari 30 responden setengah responden berada pada kategori baik sebanyak 10 siswa (33,33%), hal ini menunjukkan bahwa siswa sudah memiliki kemampuan yang baik sekali dalam melakukan smash forehand. Smash backhand sendiri hampir setengah responden berada pada kategori cukup sebanyak 12 siswa (40%), hal ini menunjukkan bahwa siswa masih cukup memiliki kemampuan dalam melakukan smash Backhand. Kesimpulan : bahwa keterampilan smash forehand siswa lebih baik dibandingkan dengan smash backhand di lihat dari nilai rata-rata.

Kata Kunci : Smash Forehand, Smash Backhand, Tenis Meja

Pengaruh program latihan plyometric terhadap peningkatan kemampuan jumping smash pada club bola voli power steller samarinda tahun 2025/2026

2026-07-29T21:26:00+00:00

Abstract. This research was motivated by the low jumping smash ability of athletes at Power Steller Volleyball Club Samarinda, as observed on December 18, 2025. The identified problems included low jump height, insufficient striking power, and frequent technical errors during jumping smash execution. Meanwhile, plyometric training, which has theoretically been proven to enhance leg muscle explosive power, had not been systematically implemented at the club. Therefore, this study aimed to determine the effect of a plyometric training program on improving jumping smash ability among athletes at Power Steller Volleyball Club Samarinda in 2025/2026. This study employed a pre-experimental research design with a one group pretest-posttest pattern. The research subjects consisted of 15 female volleyball players from Power Steller Club selected through saturated sampling technique. The instrument used was a vertical jump test to measure jumping smash ability. The intervention consisted of a plyometric skipping training program conducted over 6 weeks with a frequency of 2 sessions per week for a total of 12 sessions. Data analysis techniques included the Kolmogorov-Smirnov normality test, Levene's homogeneity test, and hypothesis testing through simple linear regression analysis using SPSS.