Article Per Year (5 Year)
p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal Journal of Physical Education Health and Sport
Yopi Kusdinar
Unknown Affiliation
Other

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
The Relationship Between Wrist Flexibility and Arm Muscle Strength with the Accuracy and Speed of Smash for Badminton Athletes Universitas Pendidikan Indonesia (UPI) Ardianto Rifki Purnama; Yopi Kusdinar; Kardjono Kardjono; Mulyana
Journal of Physical Education Health and Sport Vol. 11 No. 2 (2024)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpehs.v11i2.18563

Abstract

This study aims to analyze the relationship between wrist flexibility and arm muscle strength with smash accuracy and speed in badminton athletes of Universitas Pendidikan Indonesia (UPI). In this study using descriptive methods with correlational techniques and the sample in this study amounted to 12 UPI Badminton UKM athletes.. Descriptive statistics show the average wrist flexibility of 99.16, arm muscle strength of 5.01, smash accuracy of 4.25, and smash speed of 103.83. The normality test results showed that the data were normally distributed (p> 0.05). Pearson correlation analysis showed a significant positive relationship between wrist flexibility and smash accuracy (r = 0.640, p = 0.025) and smash speed (r = 0.662, p = 0.019). Similarly, arm muscle strength was significantly associated with accuracy (r = 0.587, p = 0.045) and smash speed (r = 0.720, p = 0.008). However, the regression analysis results showed that these two variables together did not have a significant effect on smash accuracy (p = 0.081) but were significant on smash speed (p = 0.030). The results of this study underscore the importance of wrist flexibility and arm muscle strength in supporting smash performance, both in terms of accuracy and speed. Training that focuses on improving flexibility and arm muscle strength is recommended to help athletes improve the quality of their smashes, while still considering aspects of technique and coordination.
Plyometric Training on Grass Surfaces on Women's Vertical Jump in Volleyball Ai Mulyatini; , Dede Rohmat Nurjaya; Yopi Kusdinar
Journal of Physical Education Health and Sport Vol. 12 No. 2 (2025)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpehs.v12i2.40014

Abstract

This study aim for know impact exercise plyometric on the surface grass to volleyball vertical jump daughter. Research This use method quantitative with design One-Group Pretest-Posttest Design. Sample consists of of 20 athletes Allexis club princess aged 14-16 years, with using total sampling. Subject done with One group experiment accept exercise plyometric on the surface grass. The instrument used For measure vertical jump is slapstick test/ Vertec . Data analysis in study This using SPSS 26 test. Hypothesis test results show that there is difference significant (p<0.05) between pre-test and post-test scores, which indicate that hypothesis study accepted. In descriptive, average score vertical jump increase from 32.15 cm in the pre-test to 35.35 cm in the post-test after undergo 12 sessions exercise plyometric during One month. This average increase show existence change positive that describes the influence of the training program provided. Therefore that, can concluded that there is significant impact exercise plyometric on the surface grass to volleyball vertical jump daughter.
Co-Authors , Dede Rohmat Nurjaya Ai Mulyatini Ardianto Rifki Purnama Kardjono Kardjono Mulyana