ABSTRAK Tujuan penelitian ini adalah untuk mengetahui hubungan antara power otot lengan dan koordinasi mata tangan dengan akurasi passing rugby Universitas Negeri Jakarta. Penelitian ini menggunakan metode penelitian deskriptif dengan teknik korelasi. Populasi dalam penelitian ini adalah mahasiswa atlet rugby Unversitas Negeri Jakarta yang masih aktif berlatih, teknik pengambilan sampel menggunakan sampling jenuh, dimana semua anggota populasi digunakan sebagai sampel. Sampel dalam penelitian ini berjumlah 30 orang. Instrumen penelitian ini yaitu: (1) tes standing medicine ball side throw (2) tes lempar tangkap bola tenis (3) tes akurasi passing.  Analisa data dalam penelitian ini menggunakan teknik korelasi dan regresi linier ganda dengan mencari persamaan regresi dan koefisien korelasi, berdasarkan analisis data penelitian diperoleh hasil 1. terdapat hubungan yang signifikan antara power otot lengan dengan akurasi passing rugby didukung oleh data penelitian, dan koefisien determinasi = 0.1664 hal ini 16.64% akurasi passing dipengaruhi oleh power otot lengan. 2. terdapat hubungan yang signifikan antara koordinasi mata tangan dengan akurasi passing rugby didukung oleh data penelitian dan koefisien determinasi = 0,7378 hal ini 73,78% akurasi passing dipengaruhi oleh koordinasi mata tangan. 3. hubungan yang signifikan antara power otot lengan dan koordinasi mata tangan secara bersama-sama dengan akurasi passing rugby didukung oleh data penelitian dan koefisien determinasi = 0.8082 hal ini 80.82% akurasi passing dipengaruhi oleh power otot lengan dan koordinasi mata tangan. Kata Kunci: Power Otot Lengan, Koordinasi Mata Tangan, Akurasi Passing, Rugby ABSTRACT The purpose of this study was to determine the relationship between arm muscle power and hand eye coordination with passing rugby accuracy at Jakarta State University. This study uses descriptive research methods with correlation techniques. The population in this study were students of the Jakarta State University rugby athlete who were still actively practicing, sampling techniques using saturated sampling, where all members of the population were used as samples. The sample in this study amounted to 30 people. The instruments of this study are: (1) standing medicine ball side throw test (2) tennis ball throwing test (3) passing accuracy test. Analysis of the data in this study uses correlation techniques and multiple linear regression by looking for regression equations and correlation coefficients, based on the analysis of research data obtained results 1. there is a significant relationship between arm muscle power with rugby passing accuracy supported by research data, and the coefficient of determination = 0.1664 this 16.64% passing accuracy is affected by arm muscle power. 2. there is a significant relationship between hand eye coordination and rugby passing accuracy supported by research data and the coefficient of determination = 0.7378 this is 73.78% passing accuracy is influenced by hand eye coordination. 3. Significant relationship between arm muscle power and hand eye coordination together with rugby passing accuracy is supported by research data and the coefficient of determination = 0.8082 this is 80.82% passing accuracy is influenced by arm muscle power and hand eye coordination. Keywords: Arm Muscle Power, Hand Eye Coordination, Passing Accuracy, Rugby

Purpose. cinnamon extract, which is the result of extraction from the bark of the genus Cinnamomum, belonging to the Lauraceae family, which grows in several continents, such as Asia, Australia, and America (South America), has made researchers enthusiastic to apply it as an athlete supplement. The purpose of this study was to examine whether 6-week daily consumption of cinnamon extract would affect anaerobic performance and reduce creatine kinase activity in badminton athletes. Methods. Overall, 30 male badminton athletes (aged 19-21 years) were enrolled and recruited into the study; 15 participants were randomly assigned to the cinnamon group and the other group was a placebo group. Both groups underwent pre-and post-supplementation tests, which covered anaerobic capacity (20-m sprint test) and physical fitness (vertical jump, agility T-test, and sit-ups). A 5-minute rest was applied between the tests. Blood serum was analysed with the use of a chemistry auto-analyser (cobas Mira S, USA) with the kinetic method to measure creatine kinase activity before and after the tests. Results. For the post-test creatine kinase activity, the results showed a significant main effect for group (p = 0.022) and time (p = 0.018) and significant time × group interactions (p = 0.013). The T-test revealed a significant two-way interaction for time × group (p = 0.007). Additionally, there was a significant main effect for group (p = 0.025) and time (p = 0.003). Conclusions. We demonstrated that cinnamon extract could reduce creatine kinase activity and improve agility T-test performance in badminton athletes.

Introduction: Body mass is a crucial matter in the midst of the COVID-19 pandemic, especially in combat and aesthetic sports which use body mass or weight as a variable in determining class/division for a match. This study aims to analyze and compare the effects of COVID-19 quarantining on body mass between combat and aesthetic sports athletes.Material and methods: 150 male athletes, in the age group of 20-23 years old, participated in this study. They were grouped into two. The first consisted of 100 combat sports athletes, including boxing (n = 25), Judo (n = 20), Karate (n = 20), Taekwondo (n = 20), and Pencak Silat (n = 15). The second group was comprised of 50 aesthetic sports athletes, including aerobic (n = 20), artistic gymnastics (n = 15), and diving (n = 15). This study focused on two parts: body mass measurement before the large-scale social restrictions in DKI Jakarta was implemented (Pre-LSCR) and body mass measurement during the large-scale social restrictions in DKI Jakarta (During-LSCR). A Life Satisfaction (LS) questionnaire was administered to all participants During-LSCR.Results: The LS questionnaire showed a higher level of the "very satisfying" response in aesthetic sports athletes regarding doing sports During-LSCR (90%), compared to that in combat sports athletes (16%). On the other hand, there were significant differences in body mass (p = 0.001) and body fat percentage (p = 0.001) between combat sports and aesthetic sports athletes.Conclusions: This study shows that aesthetic sports lighter than combat sports during the 20-day quarantine period in the COVID-19 pandemic.

This study aims to determine and prove the direct effect of scoring skills (service, spike, block) and opponent error on the team wins of the four Proliga volleyball teams participating in the 2019 finals. The research method used is a survey method with analysis techniques using the path analysis approach. A total sampling technique was used and data collection was carried out based on the indicators contained in the Volleyball Information System (VIS). The results of the study concluded that: (1) service has a direct but not significant effect on opponent error by 2.34%; (2) spike has a direct effect on opponent error by 5.76%; (3) the block has a direct but not significant effect on opponent error by 0.27%; (4) opponent error directly affects the team wins by 16.4%; (5) service has a direct effect by 8.61%; (6) spike has a direct effect by 33.8%; (7) block has a direct effect on the team wins of by 21.68%. Keywords: scoring skills, opponent error, team wins.

This study aimed to determine the correlation between opponent's error with the team victory of the volleyball national team on 2019 Peace Cup participants. This research method used a survey method with correlational techniques, which was a study to collect data obtained from the results of the Peace Cup friendly competition using VIS (Volleyball Information System) software. The research population was all participants of the 2019 Peace Cup match, and the sample taken was the Indonesian national team of men and women. The research results obtained by the regression equation Y to X is = 16.332 + 1.034 X, then obtained Fcount = 4.318> Ftable = 3.52. It rejects Ho but the calculation result is significant (at α = 0.05). The coefficient of determination of opponent's error with winning team is (rxy²) = 0.185. This also means that 18.5% of team victory (Y) are determined by opponent's error (X).