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All Journal Journal of Physical Education and Sports ACTIVE: Journal of Physical Education, Sport, Health and Recreation
Supriyono
Universitas Negeri Semarang
Education Other

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The Difference in the Effect of Using Fins and Zoomers on the Improvement of 50-Meter Backstroke Swimming Speed Annisa Lintang; Supriyono
ACTIVE: Journal of Physical Education, Sport, Health and Recreation Vol. 14 No. 3 (2025)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/active.v14i3.35138

Abstract

This study was conducted to examine the extent to which the use of fins and zoomers affects the improvement of 50-meter backstroke swimming speed among athletes of the Tri Cakti Semesta Semarang Club. A quantitative approach with a two-group pretest-posttest design was used. Twenty athletes were selected as participants and divided into two groups: the first group trained using fins, while the second group trained with zoomers. Data were collected through swimming speed tests conducted before and after 16 training sessions. The results were analyzed using Paired Samples T-Tests and Independent Samples T-Tests. The findings showed that both fins and zoomers significantly improved athletes' 50-meter backstroke swimming performance, with an average increase of 0.69 seconds and 0.72 seconds, respectively. However, a comparative analysis did not show a significant difference between the two training methods. In conclusion, both tools can be considered equally effective as training variations to support the improvement of backstroke swimming performance. 
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 Annisa Lintang Hadi M Fahri Dwi Prasetiyo Soedjatmiko