Pengaruh Latihan Seated Jump dan Depth Reaction Jump Terhadap Tinggi Loncatan Atlet Bolavoli PBV Gribin Putra U15 Surabaya

The Effect of Seated Jump and Depth Reaction Jump Training on the Jump Height of U15 Men's PBV Gribin Volleyball Athletes in Surabaya

Penelitian ini bertujuan untuk mengetahui pengaruh latihan seated jump dan depth reaction jump terhadap peningkatan tinggi loncatan atlet bolavoli PBV Gribin Putra U15 Surabaya serta membandingkan efektivitas kedua metode latihan tersebut. Penelitian menggunakan pendekatan kuantitatif dengan metode eksperimen semu (quasi experiment) dan desain two group pretest-posttest design. Sampel penelitian berjumlah 20 atlet yang dibagi menjadi dua kelompok, masing-masing 10 atlet pada kelompok latihan seated jump dan depth reaction jump. Program latihan dilaksanakan selama 6 minggu dengan frekuensi 3 kali per minggu. Instrumen pengukuran yang digunakan adalah tes vertical jump. Analisis data meliputi uji normalitas Shapiro-Wilk, uji homogenitas Levene, uji paired sample t-test, dan uji independent sample t-test dengan taraf signifikansi 0,05. Hasil penelitian menunjukkan bahwa latihan seated jump dan depth reaction jump sama-sama memberikan pengaruh yang signifikan terhadap peningkatan tinggi loncatan atlet (p < 0,05). Namun, hasil perbandingan kedua kelompok menunjukkan tidak terdapat perbedaan pengaruh yang signifikan antara kedua metode latihan (p > 0,05). Dapat disimpulkan bahwa latihan seated jump dan depth reaction jump sama-sama efektif dalam meningkatkan tinggi loncatan atlet bolavoli U15.

This study aimed to examine the effects of seated jump and depth reaction jump exercises on improving vertical jump height of U15 volleyball athletes at PBV Gribin Putra Surabaya and to compare the effectiveness of both training methods. This research employed a quantitative approach using a quasi-experimental method with a two-group pretest–posttest design. The sample consisted of 20 athletes divided into two groups: 10 athletes in the seated jump group and 10 athletes in the depth reaction jump group. The training program was conducted for six weeks with a frequency of three sessions per week. Vertical jump tests were used as measurement instruments. Data were analyzed using the Shapiro–Wilk normality test, Levene’s homogeneity test, paired sample t-test, and independent sample t-test at a significance level of 0.05. The results showed that both seated jump and depth reaction jump exercises had a significant effect on increasing athletes’ vertical jump height (p < 0.05). However, the comparison between the two groups indicated no significant difference in effectiveness between the training methods (p > 0.05). It can be concluded that seated jump and depth reaction jump exercises are equally effective in improving vertical jump performance in U15 volleyball athletes