HUBUNGAN ANTARA TINGGI BADAN, KEKUATAN OTOT LENGAN, DAN POWER TUNGKAI DENGAN KEMAMPUAN TEMBAKAN FREE THROW PESERTA DIDIK YANG MENGIKUTI EKSTRAKURIKULER BOLABASKET PUTRA SMA NEGERI 4 PURWOREJO

Abstract

Abstrak Penelitian ini dilatar belakangi oleh kemampuan mekanika free throw peserta didik yang mengikuti ekstrakurikuler bolabasket putra di SMA Negeri 4 Purworejo masih kurang. Penelitian ini bertujuan untuk mengetahui hubungan antara tinggi badan, kekuatan otot lengan, dan power tungkai dengan kemampuan tembakan free throw pada peserta didik yang mengikuti ekstrakurikuler bolabasket putra di SMA Negeri 4 Purworejo. Jenis penelitian adalah korelasional. Metode yang digunakan survei, dengan teknik pengumpulan data menggunakan tes dan pengukuran. Populasi adalah peserta didik ekstrakurikuler bolabasket di SMA Negeri 4 Purworejo yang berjumlah 35 siswa. Teknik sampling menggunakan purposive sampling, dengan kriteria: (1) aktif mengikuti kegiatan ekstrakurikuler bolabasket, (2) bersedia menjadi sampel penelitian, dan (3) berjenis kelamin laki-laki. Berdasarkan kriteria yang memenuhi berjumlah 21 orang. Instrumen tinggi badan menggunakan stadiometer, kekuatan otot lengan menggunakan push up selama 1 menit, mengukur power tungkai menggunakan vertical jump, dan mengukur kemampuan tembakan free throw menggunakan tes tembakan hukuman (free throw). Analisis data menggunakan uji korelasi. Hasil penelitian menunjukkan bahwa: (1) Ada hubungan yang signifikan antara tinggi badan dengan kemampuan tembakan free throw, dengan nilai rx1.y = 0,712 > r(0.05)(21) = 0,413. (2) Ada hubungan yang signifikan antara kekuatan otot lengan dengan kemampuan tembakan free throw, dengan nilai rx2.y = 0,630 > r(0.05)(21) = 0,413. (3) Ada hubungan yang signifikan antara power tungkai dengan kemampuan tembakan free throw, dengan nilai rx3.y = 0,904 > r(0.05)(21) = 0,413. (4) Ada hubungan yang signifikan antara tinggi badan, kekuatan otot lengan, dan power tungkai dengan kemampuan tembakan free throw pada peserta didik yang mengikuti ekstrakurikuler bolabasket di SMA Negeri 4 Purworejo, dengan nilai F hitung 50,790 > F tabel pada taraf signifikansi 5% dan derajat kebebasan 3;197 yaitu 3,197, dan Ry(x1.x2.X3) = 0,948 > R(0.05)(21) = 0,413. Kata kunci: hubungan tinggi badan, kekuatan otot lengan, power tungkai, kemampuan tembakan free throw Abstract The research background is that the free throw mechanic skill of the male students participating in the extracurricular basketball at SMA Negeri 4 Purworejo is still low. This study aims to find out the relationship between the height, arm muscle strength, and leg power and the free throw shooting skill among the male students participating in the extracurricular basketball at SMA Negeri 4 Purworejo. This was a correlational study. The method was a survey in which the data were collected by tests and measurements. The population comprised students participating in the extracurricular basketball at SMA Negeri 4 Purworejo with a total of 35 students. The sampling technique was the pusposive sampling technique with the criteria that the students were: (1) active in the extracurricular basketball activities, (2) willing to be the research sample, and (3) males. Based on the criteria fulfilment, there were 21 students. The instrument for the height was a stadiometer, the arm muscle strength was measured by push-ups for 1 minute, the leg power was measured by vertical jumps, and the free throw shooting skill was measured by the free throw shooting test. The data analysis used the correlation test. The results of the study are as follows. (1) There is a significant relationship between the height and the free throw shooting skill, with rx1y = 0.712 > r(0.05)(21) = 0.413. (2) There is a significant relationship between the arm muscle strength and the free throw shooting skill, with rx2y = 0.630 > r(0.05)(21) = 0.413. (3) There is a significant relationship between the leg power and the free throw shooting skill, with rx3y = 0.904 > r(0.05)(21) = 0.413. (4) There is a significant relationship between the height, arm muscle strength, and leg power and the free throw shooting skill among the students participating in the extracurricular basketball at SMA Negeri 4 Purworejo, with Fobserved = 50.790 > Ftable at the 5% significance level and degrees of freedom 3;197 i.e. 3.197, and Ry(x1,x2,x3) = 0.948 > R(0.05)(21) = 0.413.