Physical Education Theory and Methodology (Feb 2023)
Positive Effects of Plyometric Training on Increasing Speed, Strength and Limb Muscles Power in Adolescent Males
Abstract
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±45.63 vs. 441.78±46.90 joule, (p ≤ 0.001)). Conclusions. Based on the results of the study, it was concluded that plyometric jumping jacks, countermovement jumps, and tuck jumps performed for 30 minutes/session, with an intensity of 70-90% 1-RM, frequency 3x/week for 6 weeks are effective in increasing limb muscle power, strength and speed.
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