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The study purpose was to prove the effectiveness of a plyometric jumping jack, countermovement jump, and tuck jump training in increasing speed, strength, and limb muscle power in adolescent males.

Materials and methods. A total of 33 subjects from Santri Pondok Pesantren An-Nur 2 Al-Murtadlo Malang Regency, males, aged 18-22 years voluntarily participated in the study. The subjects were divided into 3 intervention groups, namely PJJ (n= 11, plyometric–jumping jacks), PCJ (n= 11, plyometric–countermovement jump), and PTJ (n= 11, plyometric–tuck jump). Plyometric jumping jacks, countermovement jump, and tuck jump training was conducted for 30 minutes/session, intensity 70-90% 1-RM, frequency 3x/week for 6 weeks. Measuring limb muscle power used the Jump Meter Digital (MD) Test, measuring limb muscle strength used the Back & Leg Dynamometer, and measuring speed used the 30 m running test. The data analysis technique used the Paired Sample T-Test with a significance level of 5%.

Results. The results obtained were as follows: mean speed between pretest and posttest on PJJ (4.56±0.16 vs. 4.36±0.15 second,(p≤ 0.001)), PCJ (4.61±0.15 vs. 4.54±0.14 second,(p≤ 0.001)), PTJ (4.55±0.19 vs. 4.48±0.18 second,(p≤ 0.001)), limb muscle strength between pretest and posttest in PJJ (111.45±18.94 vs. 139.27±20.23 kg,(p≤ 0.001)), PCJ (117.73±21.03 vs. 129.55±19.24 kg,(p≤ 0.001)), PTJ (115.46±17.66 vs. 125.91±18.62 kg,(p≤ 0.001)), limb muscle power between pretest and posttest in PJJ (422.86±34.61 vs. 493.12±49.24 joule,(p≤ 0.001)), PCJ (410.70±38.25 vs. 462.20±38.55 joule,(p≤ 0.001)), PTJ (404.20±45 …