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SUPLEMENTASI BUBUK DAUN KELOR UNTUK MENINGKATKAN KADAR HEMOGLOBIN DAN ERITROSIT PADA TIKUS YANG DIBERI LATIHAN FISIK BERAT Sinaga, Rika Nailuvar; Sinaga, Fajar Apollo; Ramadhani Pratiwi; Ginting, Alin Anggreni; Marpaung, Deni Rahman
Sains Olahraga : Jurnal Ilmiah Ilmu Keolahragaan Vol. 9 No. 2: Oktober 2025
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/so.v9i2.69928

Abstract

Selama berolahraga berbagai perubahan fisiologis terjadi di dalam tubuh termasuk parameter darah. Intensitas latihan merupakan salah satu faktor yang mempengaruhi perubahan tersebut. Latihan intensitas berat dapat mempengaruhi kadar hemoglobin dan eritrosit yang dikenal sebagai anemia olahraga. Penelitian ini bertujuan untuk mengetahui bagaimana pemberian larutan bubuk daun kelor (Moringa oleifera) mempengaruhi kadar eritrosit dan hemoglobin selama latihan intensitas berat. Subjek penelitian menggunakan tikus yang dibagi menjadi lima kelompok: kelompok kontrol, kelompok kontrol negatif, kelompok yang menerima latihan fisik berat dan larutan bubuk daun kelor dengan dosis 100mg/kgBB, 200mg/kgBB dan 400mg/kgBB. Tikus diberikan latihan fisik berat tiga kali seminggu selama tiga puluh hari, dengan setiap sesi berlangsung selama lima puluh menit. Tikus diberikan larutan bubuk daun kelor 30 menit sebelum berenang. Setelah 30 hari semua tikus akan melakukan latihan fisik berat dan kemudian kadar hemoglobin dan eritrositnya akan diukur. Hasil penelitian ini menunjukkan bahwa pemberian larutan bubuk daun kelor dapat meningkatkan kadar eritrosit dan hemoglobin. Oleh karena itu, dapat dikatakan bahwa daun kelor membantu mengatasi anemia akibat aktivitas fisik yang berat. Kata Kunci: Daun Kelor, Latihan Fisik Berat, Hemoglobin, Eritrosit
PENGARUH LATIHAN RUNNING ABC HIGH KNEE SKIPS DAN SKIPPINGS TERHADAP KECEPATAN LARI Aulia Fathur Rahman; Indah Verawati; Siregar, Nurhamida Sari; Marpaung, Deni Rahman
Sains Olahraga : Jurnal Ilmiah Ilmu Keolahragaan Vol. 9 No. 2: Oktober 2025
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/so.v9i2.70096

Abstract

Tujuan penelitian ini adalah untuk mengetahui Pengaruh Latihan Running ABC High Knee Skips dan Skippings Terhadap Kecepatan Lari Atlet Binaan SSB Garda Tamiang Tahun 2023. Desain penelitian ini menggunakan penelitian Kuantitatif  yang menggunakan desain Two Groups Pre-test Post-test yakni dengan konsep eksperimen yang dilakukan pada dua kelompok dengan masing-masing treatmen yang berbeda. Jumlah subyek yang digunakan dalam penelitian ini sebanyak 20 orang dan untuk rata-rata umur pada sampel penelitian ini sekitar 13-15 tahun. Berdasarkan hasil penelitian yang diperoleh menggunakan uji T dependent pada hasil uji hipotesis pada kelompok High Knee Skips sebesar 0.004 < 0.05 sehingga dapat disimpulka bahwa ada perbedaan yang signifikan hasil kecepatan lari sebelum dan sesudah perlakuan, sedangkan hasil uji hipotesis pada kelompok Skippings sebesar sebesar 0.007 < 0.05 sehingga dapat disimpulkan bahwa ada perbedaan yang signifikan hasil kecepatan sebelum dan sesudah perlakuan. Kesimpulan dari penelitian ini adalah latihan Skippings lebih signifikan dalam meningkatkan kecepatan lari atlet binaan SSB Garda Tamiang Tahun 2023. Kata Kunci : Running, High Knee Skips, Skippings, Atlet
Visualisasi Mental untuk Konsentrasi Pemain Basket Marpaung, Deni Rahman; Rangkuti, Salman Rasyid; Batubara, Muhammad Sevat Azra; Maulana, Gilang; Sitorus, Ronaldo Paulus; Sinaga, Febri Doli Maruli
VISA: Journal of Vision and Ideas Vol. 5 No. 3 (2025): Journal of Vision and Ideas (VISA)
Publisher : IAI Nasional Laa Roiba Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47467/visa.v5i3.8303

Abstract

This study aims to determine the mental visualization and concentration of basketball players. This visualization affects the concentration of basketball players at SMA N 2 Medan. Physical education is a compulsory subject taught in Senior High Schools (SMA). In physical education learning activities, the most important thing related to the occurrence of an effective learning process in students is the teacher's ability to combine various learning conditions into learning activities, combining these learning conditions in the form of a teaching method. From the results of interviews conducted by researchers, several physical education teachers at the school stated that students are usually slow to master the basic techniques of basketball Lay Up so that the Minimum Passing Criteria (KKM) are difficult to achieve. Based on this problem, thoughts and desires arose to find alternative teaching models to convey basic basketball Lay Up techniques. In this case, an alternative was proposed by providing mental imagery training to students. Mental imagery is a person's ability to build a motion picture or skill in the mind or in the mind. Researchers want to know the effect of mental imagery training on student learning outcomes in mastering basic basketball Lay Up techniques in physical education learning. The population in this study was all students of class XI SMA Negeri 2 Medan. From this study it can be concluded that the use of mental imagery training has a significant effect on students' ability to master basic basketball dribbling techniques. 
The Influence of Training Methods on Improving Fundamental Techniques, Leg Power, and Coordination in Adolescent Volleyball: Literature Review Hutauruk, Dela Oktavia; Lirazani, Devina; Ayumi, Najla Sari; Wirya, Nayla; Simamora, Andre William Pasoaran; Marpaung, Deni Rahman; Kurniawan, Randi
Journal of Education Religion Humanities and Multidiciplinary Vol 3, No 2 (2025): Desember 2025
Publisher : CV. Rayyan Dwi Bharata

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57235/jerumi.v3i2.7680

Abstract

Inroduction: Mastery of fundamental techniques, leg power, and coordination is a crucialdeterminant of performance in adolescent volleyball athletes. However, many young athletesface limitations due to training methods that lack variation, do not match their developmentalcharacteristics, and do not properly emphasize comprehensive biomotor development. Theseissues often result in suboptimal improvement in their essential skills.Objective: This study aims to examine the influence of specific training methods on enhancingfundamental techniques, leg power, and coordination among youth volleyball athletes, as wellas to evaluate the effectiveness of each training method in supporting athletic performancedevelopment.Methods: An experimental design was used by implementing two types of training programs—agility hurdle and agility ring—to adolescent volleyball players over a structured trainingperiod. Measurement instruments included fundamental skills tests, leg power assessments,and coordination tests administered before (pre-test) and after (post-test) the intervention.Data were analyzed to determine changes in athletes’ abilities following the training.Results: The results indicate that both training methods significantly improved fundamentalvolleyball skills, particularly in passing, serving, and spiking. Notable enhancement in legpower was observed through increased jump performance and movement explosiveness.Coordination improvements were more pronounced in athletes with higher initial coordinationlevels, suggesting that baseline ability influences training outcomes.Conclusion: Structured, varied, and well-targeted training methods are effective in improvingfundamental skills, leg power, and coordination in adolescent volleyball athletes. Thesefindings highlight the importance of selecting appropriate training strategies as a foundation for designing more effective and sustainable athlete development programs.
Analisis Komparatif Efektivitas dan Strategi Blocking pada Middle Blocker, Opposite Hitter, dan Outside Hitter dalam Bolavoli Marpaung, Deni Rahman; Purba, Dosipa; Sitorus, Joshua Jekson Very Alamsyah
SPRINTER: Jurnal Ilmu Olahraga Vol. 6 No. 3 (2025): SPRINTER: Jurnal Ilmu Olahraga
Publisher : MAN Insan Cendekia Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46838/spr.v6i3.879

Abstract

Blocking is one of the most decisive survival skills in modern volleyball because it directly influences rally outcomes and the tactical momentum of the game. Each player position, namely Middle Blocker (MB), Opposite Hitter (OPP), and Outside Hitter (OH), has different technical, tactical, and cognitive demands. However, previous research has tended to discuss blocking ability in general without considering positional differences. This study aims to systematically review recent literature to compare the effectiveness of blocking, tactical strategies, and performance determinants for the MB, OPP, and OH positions at the elite level. The systematic review method was conducted based on the PRISMA guidelines, with searches in five databases: Scopus, Web of Science, PubMed, SPORTDiscus, and Google Scholar, covering the period from 2015 to 2024. Analysis of the article reveals a clear hierarchy of positions. MB players have the highest block success rate, followed by OPP and OH. Success factors include reaction time, lateral agility, vertical jump ability, hand technique, and tactical intelligence. The analysis results show a clear hierarchy regarding block effectiveness, with MB players having the highest block success rate, followed by OPP and OH. Block success is influenced by several key factors, including reaction time, lateral agility, vertical jump ability, hand technique, and tactical intelligence in reading opponent attacks. It is concluded that the effectiveness of the block is position-specific, so training programs need to be designed differently according to each player's role.
The Effect of Balance Training on Body Stability in Volleyball Athletes Peri agusta simanjuntak; Zefanya silaban; Pebri Adi Lamtama Silaban; Jason Karunia One Jaya Gulo; Putri Paulina Marpaung; Randi Kurniawan; Deni Rahman Marpaung
Didaktik : Jurnal Ilmiah PGSD STKIP Subang Vol. 11 No. 04 (2026): Volume 11 No. 04 Desember 2025 In Build
Publisher : STKIP Subang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36989/didaktik.v11i04.9143

Abstract

This literature review aims to synthesize current evidence regarding the effects of balance training on body stability in volleyball athletes. A systematic search was conducted using academic databases such as PubMed, Scopus, and Google Scholar to identify studies published between 2000 and 2024 related to balance training, postural control, and performance in volleyball. The reviewed studies consistently demonstrate that balance training significantly improves static and dynamic stability, neuromuscular coordination, and injury prevention. The analysis highlights that incorporating balance exercises into volleyball training programs enhances athletes’ ability to maintain postural control during dynamic actions such as jumping, landing, and rapid directional changes. Despite these benefits, limited literature specifically examines volleyball populations, suggesting a need for more sport-specific investigations. Overall, evidence supports the inclusion of structured balance training as a vital component of volleyball conditioning to enhancestability and minimize injury risks Furthermore, future research should focus on identifying the optimal duration, intensity, and type of balance exercises that yield the greatest improvements in volleyball-specific performance. Comparative studies between beginner, intermediate, and elite athletes would provide valuable insights into how training adaptations differ across skill levels. Additionally, integrating balance training with other conditioning elements such as strength, agility, and plyometric training could produce a more comprehensive understanding of its synergistic effects on athletic performance. These findings would contribute to the development of evidence-based training protocols aimed at maximizing performance outcomes and reducing injury incidence among volleyball players.
Analysis of the Impact of Basic Technique Training on Increasing Shooting Accuracy and Ball Handling in Basketball Players: A Literature Review Ahmad Hidayat; Bribert Martua Panggabean; Vebrianto Valentino Purba; Toto Haryono Tumanggor; Tori Budi Tomo Siahaan; Deni Rahman Marpaung
LITERACY : International Scientific Journals of Social, Education, Humanities Vol. 4 No. 2 (2025): August : International Scientific Journals of Social, Education, Humanities
Publisher : Badan Penerbit STIEPARI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56910/literacy.v4i2.2232

Abstract

This study is motivated by the importance of mastering basic techniques in basketball, especially in improving shooting accuracy and ball handling skills. The purpose of this study is to analyze the impact of basic technique training on improving these two aspects of skills. The method used is a literature review of ten scientific journals published from 2020 to 2025 that are relevant to the topic. The results of the analysis show that basic technique training consistently makes a positive contribution to improving shooting accuracy and ball handling skills in basketball players, both at beginner and advanced levels. This finding reinforces the importance of implementing a structured and sustainable basic technique training program in athlete development. The implications of this study point to the need for coaches and policy makers in sports to integrate basic technique training as a core part of the basketball training curriculum.
Hubungan Kemampuan Passing Bawah dengan Tingkat Konsistensi Permainan Bola Voli Melati Intan Siburian; Chandro sitinjak; Enjel Rianta Ambarita; Titin Aurelyana Napitu; Rasika Nur Syabila; Deni Rahman Marpaung; Randi kurniawan
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 11 No. 02 (2026): Volume 11 No. 2, Juni 2026 Publish
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v11i02.48822

Abstract

Penelitian ini bertujuan untuk mengetahui hubungan kemampuan passing bawah dengan tingkat konsistensi permainan bola voli. Passing bawah merupakan salah satu teknik dasar yang sangat penting dalam permainan bola voli karena digunakan untuk menerima servis, menahan serangan lawan, serta mengawali serangan. Kemampuan passing bawah yang baik sangat berpengaruh terhadap kestabilan permainan, baik secara individu maupun tim. Penelitian ini menggunakan metode studi literatur (library research) dengan pendekatan deskriptif kualitatif. Sumber data diperoleh dari 10 artikel penelitian terdahulu yang relevan dan membahas tentang passing bawah dalam permainan bola voli. Teknik pengumpulan data dilakukan melalui dokumentasi dengan cara mencari, membaca, dan mencatat hasil penelitian yang berkaitan dengan variabel passing bawah dan konsistensi permainan. Teknik analisis data menggunakan analisis isi (content analysis) dengan membandingkan, mengidentifikasi, dan menyimpulkan hasil dari masing-masing penelitian. Hasil kajian menunjukkan bahwa kemampuan passing bawah memiliki hubungan yang sangat kuat dengan tingkat konsistensi permainan bola voli. Faktor-faktor yang paling dominan memengaruhi passing bawah adalah koordinasi mata-tangan, kekuatan otot lengan, keseimbangan tubuh, serta metode latihan yang tepat. Koordinasi mata-tangan menjadi faktor yang paling berpengaruh terhadap keberhasilan passing bawah. Selain itu, latihan yang dilakukan secara terstruktur dan berulang terbukti mampu meningkatkan keterampilan passing bawah secara signifikan. Dengan demikian, semakin baik kemampuan passing bawah seorang pemain, maka semakin tinggi pula konsistensi permainan bola voli yang ditampilkan.
Analisis Metode Latihan Progresif Untuk Meningkatkan Akurasi Dan Power Servis Atas Dalam Bola Volly Ahmad Sopiyan; Ardi Anugrah R Marbun; Arif Wellmen Tumanggor; Mikael Brema; Muhammad Fadil; Deni Rahman Marpaung; Randi Kurniawan
Jurnal Olahraga Kebugaran dan Rehabilitasi (JOKER) Vol 5 No 2 (2025): Jurnal Olahraga Kebugaran dan Rehabilitasi (JOKER)
Publisher : Universitas Singaperbangsa Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35706/joker.v5i2.13467

Abstract

Penelitian ini bertujuan untuk menganalisis efektivitas metode latihan progresif dalam meningkatkan akurasi dan power servis atas pada permainan bola voli melalui studi kepustakaan dari enam jurnal relevan. Teknik servis atas merupakan kemampuan dasar yang memiliki peran strategis sebagai serangan pertama dalam permainan, sehingga membutuhkan penguasaan teknik yang baik, stabil, dan bertenaga. Hasil analisis menunjukkan bahwa latihan progresif memberikan dampak positif yang signifikan terhadap peningkatan kemampuan teknik, karena pendekatan ini memungkinkan pemain mempelajari gerakan dari tahap paling sederhana hingga tahapan kompleks secara terstruktur. Tahapan progresif membantu pemain mengembangkan koordinasi gerak, kontrol tubuh, konsistensi teknik, serta adaptasi motorik yang lebih optimal. Selain itu, peningkatan intensitas latihan secara bertahap terbukti mampu memperkuat otot dan meningkatkan efisiensi gerakan, sehingga power pukulan bertambah tanpa mengorbankan akurasi. Secara keseluruhan, latihan progresif terbukti menjadi metode pembelajaran yang efektif, aman, dan relevan untuk diterapkan pada pemain pemula maupun siswa sekolah
ANALISIS KETERAMPILAN PASSING BAWAH DALAM PERMAINAN BOLA VOLI PADA ATLET Alhadi Alhadi Putra Pratama; Michael; Twenty Anisa Sotaradu Sitompul; Deni Rahman Marpaung; Randi Kurniawan
JURNAL ILMIAH PENJAS (Penelitian, Pendidikan dan Pengajaran) Vol 12 No 2 (2026): Jurnal Ilmiah Penjas
Publisher : UNIVERSITAS TUNAS PEMBANGUNAN SURAKARTA (UTP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jip.v12i2.6616

Abstract

Penelitian ini bertujuan untuk mengetahui dan menganalisis faktor-faktor yang memengaruhi keterampilan passing bawah dalam permainan bola voli pada atlet melalui kajian literatur. Metode yang digunakan adalah literature review dengan pendekatan deskriptif kualitatif melalui analisis sepuluh artikel ilmiah yang relevan. Data diperoleh dari berbagai database seperti Google Scholar, PubMed, dan ScienceDirect dengan kriteria publikasi 5–10 tahun terakhir serta kesesuaian variabel penelitian. Hasil kajian menunjukkan bahwa keterampilan passing bawah yang efektif dipengaruhi secara signifikan oleh komponen fisik seperti kekuatan otot lengan, kelentukan pergelangan tangan, dan koordinasi mata-tangan, serta penguasaan teknik posisi tubuh yang benar. Selain itu, penerapan metode latihan yang terstruktur seperti latihan berpasangan (wall bounce) dan variasi umpan terbukti mampu meningkatkan akurasi dan konsistensi passing bawah. Dengan demikian, penguatan komponen fisik dasar dan latihan teknik yang berkelanjutan menjadi kunci utama dalam meningkatkan performa passing bawah pada atlet.
Co-Authors ., Mesnan Ade Evriansyah Agus Salim Samosir Ahmad Hidayat Ahmad Sopiyan Ahmad Syabaruddin Aisyah Harahap Alhadi Alhadi Putra Pratama Amirsyah Putra Lubis Amirzan Anak Agung Gede Sugianthara Ardi Anugrah R Marbun Ardi Nusri Ardi Nusri Arif Wellmen Tumanggor Arya Divana Asnita Novida Nababan Aulia Fathur Rahman Ayumi, Najla Sari Azrina, Jihan Bangun Setia Batubara, Muhammad Sevat Azra Bernadeta Suhartini Berutu, Hinggut Agam Boby Helmi Br Ginting, Septi Kristina Bribert Martua Panggabean Chandro sitinjak Claudia Caroline Zefanya Hasibuan Davidwin Simanungkalit Devi Catur Winata Eka Swasta Budayati Enjel Rianta Ambarita Eva Faridah Fadli, Zen Fanny Ardila Siregar Faridz Ravsamjani Fery Brian Banjarnahor Filli Azandi Filli Azandi Fitri Devi Purba Frans File Manihuruk FransFile Manihuruk Ginting, Alan Gibron Ersada Ginting, Alin Anggreni Ginting, Haikel Pranata Ginting, Inke Monica br Hakim Irwandi Marpaung Harahap, Novita Sari Hendra Saputra Hutauruk, Dela Oktavia Ihsan, Miftahul Ilham, Anugrah Ilham, Zulpikar Ilhamdani, Rizky Indah Verawati Indah Verawati Indra Kasih Irfan Deny Oktavian Ismawan, Hendry Jason Karunia One Jaya Gulo Kevin Owen Manihuruk Khairani Fitri Khairani Fitri Kurniawan, Randi Kurniawan, Randi Lirazani, Devina Lubis, Ahmad Hidayat Lubis, Borkat Lubis, Muhammad Afif Abror Malau, Clarisa Anggriani Mandike Ginting Mandike Ginting Manihuruk, FransFile Manihuruk, Kevin Owen Marsal Risfandi Maulana, Gilang Mawardinur . Melati Intan Siburian Michael Michael David Sinaga Michael Thomson Mikael Brema Muhammad Fadil Murni Eva Marlina Naila Lulu Qalbi Napitupulu, Putri Anjeli Nina Mardiana (F01108057) Noviola Sari Kusuma Sagala Novita Sari Harahap Nurhamida Sari Siregar Nurhayati Simatupang Nurhayati Simatupang, Nurhayati Nurjamal Nurjamal Nurman Hasibuan Nurman Hasibuan Onyas Widianingsih Pangondian Hotliber Purba Pebri Adi Lamtama Silaban Peri agusta simanjuntak Puji Ratno, Puji Purba, Dosipa Purba, Vandem Samuel Purba, Vebrianto Valentino Purwanto Putra, Dio Kurniawan Oktav Jasya Putri Paulina Marpaung Ramadhani Pratiwi Ramlan Silaban Randi Kurniawan Randy Kurniawan Rangkuti, Salman Rasyid Rasika Nur Syabila Reyhansiah Siahaan Rida Wahyuni Rima Mediyana Sari Rinaldi Aditya Rito, Stepfany Lasma Riza, Ade Ros Rizky, Suyuda Afriza Rosmaini Hasibuan Salman Rasyid Rangkuti Septiana M Purba Siahaan, Tori Budi Tomo Sigit Nugroho Sihombing, Raja Syaifullah Derita Sihotang, Fadhil Simamora, Andre William Pasoaran Sinaga, Febri Doli Maruli Sinaga, Rika Nailuvar Siregar, Cristian Marito Siregar, Gilang Maulana Siregar, Nurhamida Sari Siregar, Reynaldi Sitorus, Joshua Jekson Very Alamsyah Sitorus, Ronaldo Paulus Sumaryanti Sumaryanti Suranta Pratama Ginting Manik Swandika Pinem Syabaruddin, Ahmad Syakila Putri Halawa Syamsul Gultom Tarigan, Alginda Pranata Titin Aurelyana Napitu Tori Budi Tomo Siahaan Toto Haryono Tumanggor Triya Panirwati Tumanggor, Toto Hariono Twenty Anisa Sotaradu Sitompul Valianto, Budi Vebrianto Valentino Purba Ventika Maranata Purba Wirya, Nayla Wiwik Rismadayanti Yolan Yosef Alfonsus Yosepin Emeliani Lumban Gaol Yustinus Sukarmin Zefanya silaban Zilfityas Dwi Oktiraisya Zulaini Zulaini .