scholarly journals PENGARUH LATIHAN PLYOMETRIC (SHOOTING) TERHADAP HASIL TINGGI LONCATAN DALAM EKSTRAKURIKULER BOLA VOLI

2020 ◽  
Vol 9 (1) ◽  
pp. 83
Author(s):  
Ahmad Yani ◽  
Restu Gayuh Subekti ◽  
Suryadi Suryadi
Keyword(s):  
Vertical Jump

Penelitian ini bertujuan untuk mengetahui pengaruh latihan <em>shooting</em> terhadap hasil tinggi loncatan siswa peserta ekstrakurikuler bola voli di MA Raudlatul Ulum Anyer. Penelitian ini merupakan penelitian eksperimen dengan desain <em>one group pretest and posttest design</em>. Populasi dan sampel dalam penelitian ini adalah 15 siswa. Instrumen penelitian menggunakan <em>vertical jump</em>, dengan reliabilitas sebesar 0,93 dan validitas sebesar 0,78 (Sargent, 1924). Analisis data menggunakan uji t. Hasil penelitian menunjukkan bahwa ada pengaruh latihan <em>shooting</em> terhadap peningkatan tinggi loncatan siswa peserta ekstrakurikuler, dengan t hitung 5,303 &gt; t tabel 2,13, Dari data <em>pre</em><em>-test</em> memiliki rerata 37,53 cm, selanjutnya pada saat <em>posttest</em> rerata mencapai 41,00 cm. Besarnya perubahan tinggi loncatan tersebut dapat dilihat dari perbedaan nilai rata-rata yaitu sebesar 3,47 cm dan dengan kenaikan presentase sebesar 9,24%. Dari hasil ini dapat disimpulkan latihan <em>shooting</em> berpengaruh untuk meningkatkan tinggi loncatan siswa peserta ekstrakurikuler bola voli di MA Raudlatul Ulum Anyer

Effects of Depth Jump vs. Box Jump Warm-Ups on Vertical Jump in Collegiate vs. Club Female Volleyball Players

2011 ◽  
Vol 15 (3) ◽  
pp. 103-106 ◽  
Author(s):  
Kimberly J. Faulkinbury ◽  
Jennie L. Stieg ◽  
Tai T. Tran ◽  
Lee E. Brown ◽  
Jared W. Coburn ◽  
...  
Keyword(s):  
Vertical Jump ◽  
Volleyball Players

Influence of Familiarization and Competitive Level on the Reliability of Countermovement Vertical Jump Kinetic and Kinematic Variables

2015 ◽  
Vol 29 (10) ◽  
pp. 2827-2835 ◽  
Author(s):  
Maria L. Nibali ◽  
Tom Tombleson ◽  
Philip H. Brady ◽  
Phillip Wagner
Keyword(s):  
Vertical Jump

scholarly journals Acute and Delayed Effects of Time-Matched Very Short “All Out” Efforts in Concentric vs. Eccentric Cycling

2021 ◽  
Vol 18 (15) ◽  
pp. 7968
Author(s):  
Daniel Boullosa ◽  
Boris Dragutinovic ◽  
Jan-Philip Deutsch ◽  
Steffen Held ◽  
Lars Donath ◽  
...  
Keyword(s):  
Vertical Jump ◽  
Active Recovery ◽  
Thigh Circumference ◽  
Physically Active ◽  
Warm Up ◽  
Delayed Effects ◽  
Acute Responses ◽  
Experimental Protocols ◽  
Different Populations ◽  
Exercise Induced

Background: To the authors’ knowledge, there have been no studies comparing the acute responses to “all out” efforts in concentric (isoinertial) vs. eccentric (isovelocity) cycling. Methods: After two familiarization sessions, 12 physically active men underwent the experimental protocols consisting of a 2-min warm-up and 8 maximal efforts of 5 s, separated by 55 s of active recovery at 80 rpm, in concentric vs. eccentric cycling. Comparisons between protocols were conducted during, immediately after, and 24-h post-sessions. Results: Mechanical (Work: 82,824 ± 6350 vs. 60,602 ± 8904 J) and cardiometabolic responses (mean HR: 68.8 ± 6.6 vs. 51.3 ± 5.7% HRmax, lactate: 4.9 ± 2.1 vs. 1.8 ± 0.6 mmol/L) were larger in concentric cycling (p < 0.001). The perceptual responses to both protocols were similarly low. Immediately after concentric cycling, vertical jump was potentiated (p = 0.028). Muscle soreness (VAS; p = 0.016) and thigh circumference (p = 0.045) were slightly increased only 24-h after eccentric cycling. Serum concentrations of CK, BAG3, and MMP-13 did not change significantly post-exercise. Conclusions: These results suggest the appropriateness of the eccentric cycling protocol used as a time-efficient (i.e., ~60 kJ in 10 min) and safe (i.e., without exercise-induced muscle damage) alternative to be used with different populations in future longitudinal interventions.

Physical and performance characteristics related to starter status, position, and division in Japanese collegiate American-football players

2021 ◽  
pp. 1-8
Author(s):  
Junta Iguchi ◽  
Minoru Matsunami ◽  
Tatsuya Hojo ◽  
Yoshihiko Fujisawa ◽  
Kenji Kuzuhara ◽  
...  
Keyword(s):  
Performance Test ◽  
Vertical Jump ◽  
American Football ◽  
Football Players ◽  
Jump Height ◽  
Test Results ◽  
Repetition Maximum ◽  
Vertical Jump Height ◽  
Division 1 ◽  
And Performance

BACKGROUND: Few studies have investigated the variations in body composition and performance in Japanese collegiate American-football players. OBJECTIVE: To clarify what characterizes competitors at the highest levels – in the top division or on the starting lineup – we compared players’ body compositions and performance test results. METHODS: This study included 172 players. Each player’s body composition and performance (one-repetition maximum bench press, one-repetition maximum back squat, and vertical jump height) were measured; power was estimated from vertical jump height and body weight. Players were compared according to status (starter vs. non-starter), position (skill vs. linemen), and division (1 vs. 2). Regression analysis was performed to determine characteristics for being a starter. RESULTS: Players in higher divisions and who were starters were stronger and had more power, greater body size, and better performance test results. Players in skill positions were relatively stronger than those in linemen positions. Vertical jump height was a significant predictor of being a starter in Division 1. CONCLUSION: Power and vertical jump may be a deciding factor for playing as a starter or in a higher division.

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