PENGARUH LATIHAN BOX SKIP TERHADAP POWER OTOT TUNGKAI SISWA PESERTA EKSTRAKURIKULER KARATE DI SMP N 1 KALASAN, SLEMAN

Abstract

Abstrak Penelitian ini dilatar belakangi oleh siswa peserta ekstrakurikuler karate di SMP Negeri 1 Kalasan saat menendang masih belum tepat pada sasaran dan masih bisa ditangkis oleh lawan saat latihan maupun saat pertandingan. Penelitian ini bertujuan untuk mengetahui pengaruh latihan box skip terhadap power otot tungkai siswa peserta ekstrakurikuler karate di SMP N 1 Kalasan. Penelitian ini menggunakan metode eksperimen dengan rancangan pre-test post-test control group design, teknik pengumpulan data dengan tes dan pengukuran. Populasi dalam penelitian ini adalah siswa peserta ekstrakurikuler karate di SMP N 1 Kalasan yang berjumlah 32 siswa. Sampel dalam penelitian ini diambil secara purposive sampling dengan ketentuan umur 13-15 tahun, dan sudah pernah bertanding yang berjumlah 20 siswa. Instrumen penelitian ini berupa tes keterampilan diukur menggunakan Standing Broad Jump dengan reliabilitas sebesar 0,92 dan validitas sebesar 0,92 (Didi Waluyo Jati, 2007: 26-28). Teknik analisis data menggunakan analisis Uji Wilcoxon match pairs test dan sebelumya telah diuji normalitas. Hasil penelitian ini menunjukkan bahwa, nilai z hitung diperoleh -3.943 dengan nilai signifikan sebesar 0.000 < 0.005. Nilai rata-rata hasil Standing Broad Jump awal atau pretest untuk sebesar 207.80, sedangkan posttest naik menjadi 214.90. Dengan demikian latihan box skip berpengaruh terhadap peningkatan power otot tungkai siswa peserta ekstrakurikuler karate di SMP N 1 Kalasan Sleman. Kata kunci : box skip, power otot tungkai, karate Abstract This research was inspired by the condition of weak leg muscle power of the karate extracurricular member of SMP Negeri 1 Kalasan as they were weak to kick during the practice or during the match. This research aimed to find out the effects of box skip training on the leg muscle power of the karate extracurricular members of SMP N 1 Kalasan. The research employed an experimental method with test design of pre-test posttest group design and the data collection technique were using test and measurement. The population was taken the karate extracurricular members of SMP N 1 Kalasan with the total of student is 32 students. The sample was taken by purposive sampling with the criteria: aged 13-15 years old and had ever joined teh competition, for about 20 students. Teh research instrument was using a skill tests Standing Broad Jump with the realibility value at 0.92 and the validity at 0.92 (Didi Waluyo Jati, 2007: 26-28). The data were analyzed by using the wilcoxon match pairs test analysis an it was tested for normality. The result of this study indicated that, the score of z count was -3943 with the significant value 0.000 < 0.005. The average score of the result for standing broad jump at the beginning or in the present was at 207.80, while in the posttest it increased to 214.90. Thus, the box skip training gave some effect on the increase of leg muscle power of the karate extracurricular members of SMP N 1 Kalasan. Keywords: box skip, leg muscle power, karate