Hip Muscle Strength in Senior and Junior High School Baseball Pitchers

2010 ◽  
Vol 42 ◽  
pp. 549
Author(s):  
Chia-Wei Chiu ◽  
Chun-Hen Hsu ◽  
Hsien Hsieh ◽  
Yung-Shen Tsai
2010 ◽  
Vol 42 ◽  
pp. 548
Author(s):  
Po-Yi Wang ◽  
Chen-Hsin Hsiao ◽  
Chun-Hen Hsu ◽  
Yung-Shen Tsai

2012 ◽  
Vol 61 (4) ◽  
pp. 707-710
Author(s):  
Yukihiro Furue ◽  
Hiroaki Tamura ◽  
Ikufumi Nagayoshi ◽  
Tatsuo Motoyama ◽  
Masayuki Kawashima ◽  
...  

2021 ◽  
Vol 3 (7) ◽  
pp. 467-478
Author(s):  
Siti Nurrochmah ◽  
M. Arif Setiawan

Abstract The purpose of this study was to study and obtain information on the ability of arm muscle strength, agility of motion, and the explosive power of leg muscles and arm muscles of the extracurricular activities of volleyball teams of Junior High School 21 Malang City. This study uses a quantitative descriptive method with the subject of the study, namely the volleyball team extracurricular activity participants in Junior High School 21 Malang City, totaling 30 students consisting of 15 boys and 15 girls. The research instrument used in the form of test and non-test instruments, while the data collection using the form of test measurement techniques. Data analysis uses descriptive statistical techniques. The results of the analysis show that: 1) the physical condition component of the arm muscle strength component as a whole is at the moderate criteria of 50 percent, 2) the physical condition component of the agility of the motion element as a whole is in the medium criteria of 43.3 percent, 3) the physical condition component of the leg muscle explosive power component overall is in the medium criteria of 46.8 percent and the physical condition component of the arm muscle explosive power component overall is at the criteria of less than 36.8 percent. Based on the results of the study it can be concluded that the elements of arm muscle strength, agility of motion, leg muscle explosive power in the overall dominant are in the medium category, and the explosive power of the dominant arm muscle are in the less category. Keywords: physical conditions; extracurricular; volleyball Abstrak Tujuan penelitian ini adalah untuk mengkaji dan memperoleh informasi kemampuan kekuatan otot lengan, kelincahan gerak, dan daya ledak otot tungkai dan otot lengan peserta kegiatan ekstrakurikuler tim bolavoli SMP Negeri 21 Kota Malang. Penelitian ini menggunakan metode deskriptif kuantitatif dengan subjek penelitian yaitu peserta kegiatan ekstrakurikuler tim bolavoli di SMP Negeri 21 Kota Malang yang berjumlah 30 siswa yang terdiri dari 15 putra dan 15 putri. Instrumen penelitian yang digunakan berupa instrumen tes dan non tes, sedangkan pengumpulan data menggunakan teknik pengukuran bentuk tes. Analisis data menggunakan teknik statistika deskriptif. Hasil analisis menunjukkan bahwa: 1) pada komponen kondisi fisik unsur kekuatan otot lengan pada keseluruhan berada pada kriteria sedang 50 persen, 2) pada komponen kondisi fisik unsur kelincahan gerak pada keseluruhan berada pada kriteria sedang 43,3 persen, 3) pada komponen kondisi fisik unsur daya ledak otot tungkai pada keseluruhan berada pada kriteria sedang 46,8 persen dan pada komponen kondisi fisik unsur daya ledak otot lengan keseluruhan berada pada kriteria kurang 36,8 persen. Berdasarkan hasil penelitian dapat disimpulkan bahwa unsur kekuatan otot lengan, kelincahan gerak, daya ledak otot tungkai pada keseluruhan dominan berada pada kategori sedang, dan daya ledak otot lengan dominan berada pada kategori kurang.


2020 ◽  
Vol 35 (2) ◽  
pp. 153-157
Author(s):  
Masumi YOSHIMOTO ◽  
Hiroyuki WATANABE ◽  
Ryota KURATSUBO ◽  
Chikara AOKI

2020 ◽  
Vol 13 (2) ◽  
pp. 335-346
Author(s):  
Muflikhul Fajri ◽  
Enjang Ahmad Mustaqim

This study aims to determine (1) whether there is a relationship between the muscle strength of the 25 meter swimming speed at the fifth grade students of Daar El Salam Junior High School. (2) Is there a relationship between height and 25 meter freestyle swimming speed at Daar El Salam Junior High School. (3) Is there a relationship between height and leg muscle tightness with the speed of 25 meter freestyle swimming at Daar El Salam Junior High School. The results of this study indicate that the height there is a correlation coefficient of 0.825 with a very strong relationship level, the strength of the river muscle there is a correlation coefficient of 0.847 with a very strong relationship level, and. Based on the results of linear tests and the significance of a simple regression equation between height, leg muscle strength, and 0.939 with a coefficient of determination (R2) of 0.882, the effect is 88.2% while 11.8% is influenced by other factors not in the variable this research. And the significance test for multiple correlation is 52.32 where the F value is greater than the F table.


1916 ◽  
Author(s):  
Charles Hughes Johnston

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