Article Per Year (5 Year)
p-Index From 2021 - 2026
0.23
P-Index
This Author published in this journals
All Journal Journal of Physical Education and Sports
M Fahri Dwi Prasetiyo
Universitas Negeri Semarang
Education

Published : 1 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 1 Documents
Search

 1 
Pengaruh Latihan Plyometrik dan Kekuatan Otot Kaki terhadap Peningkatan Kecepatan Renang Gaya Dada Jarak 50 Meter Pada Siswa Ekstrakurikuler SMK Bina Bangsa Kersana, Kabupaten Brebes M Fahri Dwi Prasetiyo; SUPRIYONO; Soedjatmiko; Hadi
Journal of Physical Education and Sports Vol. 15 No. 2 (2026): Juni 2026
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpes.v15i2.45690

Abstract

This study aimed to examine the effects of plyometric exercises, specifically jump to box and depth jump, and leg muscle strength on 50-metre breaststroke speed in students participating in extracurricular swimming at SMK Bina Bangsa Kersana, Brebes Regency. Using a quantitative experimental approach with a 2x2 factorial design, the study involved students undergoing plyometric training for four weeks, three sessions per week. The dependent variable was 50-metre breaststroke speed, and leg muscle strength was considered an attribute variable. The results indicated that both jump to box and depth jump exercises significantly increased swimming speed (F=215.207; p<0.05). Leg muscle strength also had a significant impact (F=51.909; p<0.05), with students possessing higher leg strength achieving faster swimming times. Furthermore, a significant interaction was observed between the type of plyometric exercise and leg muscle strength (F=8.206; p<0.05), suggesting that exercise effectiveness depends on the student’s leg strength. Overall, jump to box training was more effective than depth jump, and students with high leg strength showed the greatest improvement. These findings confirm that structured plyometric training, particularly jump to box exercises, combined with sufficient leg muscle strength, can optimize 50-metre breaststroke performance, making it a recommended approach for enhancing swimming speed in adolescent athletes.
Co-Authors Hadi Soedjatmiko Supriyono