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This study aimed to determine the relationship between arm muscle strength and eye-hand coordination with the ability to serve under volleyball male extracurricular students at Air Satan State Junior High School, Musi Rawas Regency. This research method is a quantitative method with correlational test. The population in this study were male volleyball extracurricular students at Air Satan State Junior High School, Musi Rawas Regency. The sample taken from the total sampling result is 21 students. Data collection techniques using tests and measurements. Data analysis techniques used are normality test, Pearson product moment correlation test and multiple correlation test. The results obtained, 1) there is a significant relationship between arm muscle strength and the ability to serve under volleyball male extracurricular students of Air Satan State Junior High School, Musi Rawas Regency, with rcount = 0.728> rtable = 0.433; 2) there is a significant relationship between eye-hand coordination and the ability to serve under volleyball male extracurricular students of Air Satan State Junior High School, Musi Rawas Regency, with rcount = 0.795 > rtable = 0.433; 3) there is a significant relationship between arm muscle strength and eye-hand coordination of male extracurricular students at Air Satan State Junior High School, Musi Rawas Regency, with rcount = 0.871 > rtable = 0.433; 4) there is a significant relationship between arm muscle strength and eye-hand coordination together with the ability to serve under volleyball male extracurricular students of Air Satan State Junior High School, Musi Rawas Regency, with Rcount = 0.798 > Rtable = 0.433, Coefficient of Determination (KD) =63.6%. Conclusion, overall both simple and multiple. Keywords: Arm Muscle Strength, Lower Service Ability, Eye-Hand Coordination

Penelitian ini bertujuan untuk meningkatkan keterampilan servis bawah pada pembelajaran bolavoli mini siswa kelas 5 SDN Selomoyo Kaliangkrik Kabupaten Magelang melalui modifikasi jarak pelaksanaan servis dan tinggi net. Penelitian ini merupakan penelitian tindakan kelas (PTK) yang terdiri dari 2 siklus. Objek pada penelitian ini adalah siswa kelas 5 SDN Selomoyo Kaliangkrik Kabupaten Magelang yang berjumlah 26 siswa. Penelitian berlangsung pada semester pertama yaitu bulan November dan Desember 2015 tahun pelajaran 2015/2016. Instrumen yang digunakan dalam penelitian ini adalah lembar pengamatan dan tes. Hasil penelitian menunjukkan bahwa modifikasi jarak pelaksaan servis dan tinggi net pada pembelajaran permainan bolavoli dapat meningkatkan keterampilan servis bawah pada siswa kelas 5 SDN Selomoyo Kaliangkrik Kabupaten Magelang. Berdasarkan data hasil tes siklus I rata-rata nilai siswa adalah 70 meningkat dibandingkan sebelum diberikan tindakan yaitu 68. Pada siklus II rata-rata nilai siswa adalah 80 dan 92% siswa dapat mencapai nilai kriteria ketuntasan minimal (KKM) 75. Berdasarkan pada hasil penilaian tersebut bahwa pada siklus II rata-rata nilai kelas 5 SDN Selomoyo, Kaliangkrik, Magelang adalah 82 dan nilai tersebut telah mencapai nilai kriteria ketuntasan minimal (KKM) 75. Dengan demikian dapat disimpulkan bahwa modifikasi jarak pelaksanaan servis dan tinggi net dapat meningkatkan keterampilan servis bawah dalam pembelajaran permainan bolavoli mini. Improving underhand service skill on miniature volleybal learning trough space of service work and the height of net modification Abstract This study aimed to improve the underhand service skill on the miniature volleyball game learning based on the modification the space of service work and height of net among class 5 Selomoyo Junior High School, Kaliangkrik Subdistrict, Magelang Regency. This was a classroom action research study consisting of two cycles. The object of the research comprised 26 students of class 5 Selomoyo Elementary School, Kaliangkrik Subdistrict, Magelang Regency. The study was conducted from November to December 2015 in the academic years of 2015/2016. The instrument in this study included observation sheet and a test. The result of the study shows that the space of service work and height of net modification method can improve underhand service skills of class 5 Selomoyo Elementary School, Kaliangkrik Subdistrict, Magelang Regency. Based on the test result in cycles I the students’ means score is 70, improving than before the action. Before the action students’ means score was 68. In cycles II the students means score is 80 and 90% could reach minimum mastery criteria (KKM) 75. Based on the student test result, on cycles II the means score of class 5 Selomoyo Elementary School, Kaliangkrik Subdistrict is 82 and this score fulfills (KKM) 75. The conclusion of the study is that space of service work and the heihgt of net modification could improved underhand service skill on miniature volleyball game learning.

The study is done for the muscular strength of relations arm with the accuracy of serve down in the game of volleyball to their students the son of the eighth grade SMPN 3 Wates. The study aims to know is there a relationship with the power of the arm musclas to their students the son of the eighth grade to do under the accuracy of serve in the game of sport branch volleyball. A problem in the formulation of this research is the relationship has the power of the arm muscles with the accuracy of serve down in the game of the branch of sport volleyball on students the son of a class of eight SMPN 3 Wates. The research is research the is non experimentation and the use of the study or kolerasional product-moment correlation. The subject of this research is the son of a class of 30 students, data collection techniques used in tests. Based on the above data analysis hes been obtained that r count of more large table to r. and with r count of 0,966 r table with 0,361 is significant leve of 5%. With the hypothesis said there is a muscular power arm with the accuracy of serve down in a game of volleyball sports can be accepted, can be concluded so that a significant relation exists between the power of the arm muscles with the accuracy of serve down in game of volleyball in sports the son of a class of eight students SMPN 3 Wates. Key Words: The power of the arm muscles, the accuracy of serve under.

Penelitian ini mengkaji masalah rendahnya prestasi belajar permainan bola voli pada siswa kelas VII A tahun pelajaran 2019/2020. Berdasarkan hasil observasi awal ditemukan bahwa siswa kelas VII A SMP Negeri 1 Selemadeg membutuhkan pembelajaran yang kreatif dan inovatif guna mengoptimalkan prestasi belajarnya di sekolah. Berdasarkan uraian tersebut maka perlu diterapkannya suatu metode pembelajaran yang dapat membuat siswa lebih aktif dalam mengikuti pembelajaran, dalam hal ini penulis menerapkan model pembelajaran demontrasi berbantuan video pembelajaran. Penelitian ini merupakan Penelitian Tindakan Kelas (PTK), yang dilaksanakan di SMP Negeri 1 Selemadeg. Penelitian dilakukan pada siswa kelas VII A pada semester Ganjil tahun ajaran 2019/2020. Jumlah siswa yang diberi tindakan sebanyak 28 orang yang terdiri dari 14 orang putra dan 14 orang putri. Penelitian ini dilaksanakan dalam dua siklus yang tiap siklusnya terdiri atas perencanaan, pelaksanaan tindakan, observasi, dan refleksi. Metode pengumpulan data dilakukan dengan metode observasi (pengamatan) dan tes. Data penelitian dianalisis secara deskriptif dengan pendekatan persentase. Data penelitian menunjukkan bahwa prestasi belajar teknik dasar servis bawah dalam permainan bola voli meningkat melalui implementasi metode demonstrasi berbantuan video pembelajaran pada siswa kelas VII A SMP Negeri 1 Selemadeg tahun pelajaran 2019/2020. Ini dapat dilihat dari ketuntasan prestasi belajar teknik dasar servis bawah bola voli siklus I mencapai 64,3% secara klasikal dan pada siklus II ketuntasan belajar secara klasikal adalah 85,7 %. Untuk itu disarankan kepada guru Pendidikan Olahraga dan Kesehataan untuk menjadikan metode ini sebagai alternatif dalam pembelajaran Pendidikan Olahraga dan Kesehataan khususnya pada materi pembelajaran teknik dasar servis bawah bola voli