Biomechanic adalah bidang ilmu yang diterapkan pada ilmu olahraga untuk mempelajari gerak-gerak tubuh. Penelitian ini bertujuan untuk mendapatkan jumlah langkah awalan (footwork step) dalam spike bola voli yang menghasilkan power terbaik. Penelitian ini dilakukan dengan eksperimen. Jumlah langkah awalan yang divariasi adalah 0, 1, 2, dan 3 langkah. Subyek penelitian adalah atlet bola voli Universitas PGRI Banyuwangi. Pengukuran power otot tungkai dilakukan dengan menggunakan high-speed camera. Pengolahan data menggunakan software kinovea untuk mendapatkan data hasil power. Hasil perhitungan menunjukkan bahwa semakin banyak langkah awalan (footwork step) maka power rata-rata cenderung semakin naik. Power rata-rata maksimum terjadi pada 2 langkah awalan (footwork step) atlet 4 yaitu sebesar 2340,44 J/dt. Power rata-rata minimum terjadi pada 0 langkah awalan (footwork step) atlet 1 yaitu sebesar 1765,85 J/dt. Kecenderungan power maksimum terjadi pada langkah awalan sebanyak 2 langkah. Hasil analisis juga menunjukkan bahwa langkah awalan sebanyak 3 langkah cenderung menghasilkan power yang lebih kecil dibanding jumlah langkah awalan yang lain. Gerakan spike dalam bola voli merupakan gerakan yang dilakukan dengan cepat dalam waktu sesingkat mungkin. Pola ini membuat seorang atlet terbiasa menggunakan langkah awalan yang sedikit jumlahnya. Langkah awalan berjumlah 3 akan menyebabkan kecepatan gerak atlet menjadi berkurang sehingga mengurangi powernya.ABSTRACT Biomechanic is one of science field that applied to the sports science to study gestures. This study aims to obtain the number of step prefix (footwork step) in volleyball spike that produces the best power. This research is done by experiment. The number of prefix steps varied are 0, 1, 2, and 3 steps. The subjects of the study were volleyball athletes of Universitas PGRI Banyuwangi. Measurement of leg muscle power is done using a high-speed camera. Data processing using kinovea software to obtain data power results. The calculation results show that the more step prefix (footwork step) then the average power tends to increase. Maximum average power occurs in 2 step prefix (footwork step) athlete 4 that is equal to 2340,44 J/dt. Minimum average power occurs at 0 step of the athlete (footwork step) at 1 at 1765,85 J/dt. Maximum power trend occurs in 2 step prefix step. The analysis results also show that 3-step prefixes tend to produce less power than the number of other prefix steps. Spike movement in volleyball is a quick movement in the shortest possible time. This pattern makes an athlete accustomed to using a few prefix steps. The initial step number 3 will cause the speed of athlete's motion to be reduced so as to reduce its power.
The purpose of this service is to provide socialization and training at Gloria Muda Tambakrejo volleyball club, Bulurejo Village, Purwoharjo District, Banyuwangi Regency. The method used in this service is discussion and direct training (demonstration and practice) to the coaches and volleyball players of Gloria Muda Tambakrejo. The result of this activity was that the volleyball club coach Gloria Muda Tambakrejo gained new insights regarding the training program and how to train and was able to develop a training program that could be used to develop the technique and game of the Tambakrejo volleyball club. Young Gloria club players get training programmed according to the training program that suits their needs. Increased basic technical skills of passing, smash and vertical jump height of club players Gloria Muda Tambakrejo. Increased skills of passing and smash techniques and physical conditions (vertical jump) by 6.17%. For the basic technique of passing, there was an increase of 9, 53%. For the basic smash technique there is an increase of 3.20%. For the ability to vertical jump there is an increase of 3, 87%.
Elastisitas dan Daya Serap (Kapilaritas) merupakan indicator penting pemilihan bahan sportweiar, keringat yang dihasilkan dapat mencapai 2.5 L/jam. Oleh karena itu persyaratan fungsional utama dari pakaian olahraga aktif adalah penyerap keringat, pengeringan cepat, dan pendinginan. Tujuan dari penenelitian ini adalah untuk mengetahui tingkat elastisitas dan daya serap (kapilaritas) kain Polyester tipe Spandex, cotton tipe 30s Combed, Dri-Fit tipe Sulkul. Metode penenlitian menggunakan deskriptif kuantitatif dengan menggunakan metode tes dan pengukuran. Sampel penelitian ini mengunakan 3 jenis bahan meliputi Spandex (Polyester), Sulkul (Dri-fit) dan 30s Combed Cotton). Tempat penelitian di Lab Universitas PGRI Banyuwangi tahun 2021. Proses analysis data menggunakan teknik pengamatan pada proses uji tarik dan kapilaritas dengan menggunaka rumus Modulus Young dan Uji kapilaritas. Hasil penelitian menunjukan bahwa untuk masing-masing uji Elastisitas dan Daya serap kain jenis Polyester (Spandex) sebesar 5129.051 Pa dan 0,06 Cm/s. Elastisitas dan Daya serap kain jenis Cotton (30 s Combed) sebesar 1397,317 Pa dan 0,08 Cm/s. Elastisitas dan Daya serap kain jenis Dri-fit sebesar 2667.106 Pa dan 0,1 Cm/s.
The purpose of this service is to hold a volleyball match to get young volleyball players and form a volleyball team in the village of Bulurejo in preparation for the inter-village volleyball championship at Purwoharjo sub-district level. The method used is to monitor volleyball matches between hamlets in the village of Bulurejo. The results of this activity were the talented young players and the volleyball team from the village of Bulurejo. The best players have good abilities in terms of physical conditions and basic volleyball technical skills. Where these two factors are very closed related to the ability to play volleyball a player. Because to have good basic volleyball technical skills requires good physical condition.
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