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All Journal JOSKA: ISORI KAMPAR JURNAL
Andreas Diko Gunawan Tambunan
Sekolah Tinggi Olahraga & Kesehatan Bina Guna Medan, Indonesia.
Education Health Professions Other

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The Influence of Abdominal Muscle Strength and Waist Flexibility on the Long Jump Results of Male Athletes Dicky Hendrawan; Natasya Br Ginting; Ani Suryani Batubara; Andi Sinsearif Zega; Andreas Diko Gunawan Tambunan; Yunita Mandasari Yunita Mandasari; Anugrah Panca Dinata; Aszon Fisi Lahagu; Novita Putri Yani Ndruru Novita Putri Yani Ndruru; Trifosa Angelina Sembiring; Muhammad Ridho Maulana
Joska: Jurnal Isori Kampar Vol. 1 No. 03 (2024): November Issue JOSKA: ISORI KAMPAR JURNAL
Publisher : Ikatan Sarjana Olahraga Republik Indonesia (Kabupaten Kampar)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53905/joska.v1i03.14

Abstract

Objectives: To examine the relationship between abdominal muscle strength and waist flexibility with long jump performance among male collegiate athletes, and to determine the relative contribution of these factors to jump distance. Methods: A cross-sectional study was conducted with 60 male physical education students aged 18-22 years from Sekolah Tinggi Olahraga dan Kesehatan Bina Guna Medan, Indonesia. Participants underwent assessments of abdominal muscle strength (one-minute sit-up test), waist flexibility (sit-and-reach test), and long jump performance. Pearson correlation and multiple linear regression analyses were used to analyze the relationships between variables. Results: Abdominal muscle strength showed a moderate positive correlation with long jump distance (r = 0.68, p < 0.001), while waist flexibility demonstrated a moderate positive correlation (r = 0.54, p < 0.001). Multiple regression analysis revealed that abdominal strength (β = 0.52) was a stronger predictor of long jump performance than waist flexibility (β = 0.31). Together, these factors explained 57.3% of the variance in jump distance. Conclusion: Core stability and trunk flexibility are important determinants of long jump performance beyond traditional factors like lower limb power. The study recommends incorporating comprehensive core strengthening and flexibility training into long jump preparation, with a particular emphasis on abdominal muscle development.
Exercise Management as a Predictor of Success in Extracurricular Activities among Junior High School Students in Medan Dicky Hendrawan; Andi Sinsearif Zega; Andreas Diko Gunawan Tambunan; Angga Maulana; Andreas Matondang; Parlindungan Nababan
Joska: Jurnal Isori Kampar Vol. 2 No. 01 (2025): March Issue JOSKA: ISORI KAMPAR JURNAL
Publisher : Ikatan Sarjana Olahraga Republik Indonesia (Kabupaten Kampar)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53905/joska.v2i01.04

Abstract

Objectives: This study aims to examine the correlation between exercise management and extracurricular achievements among junior high school students in Medan, Indonesia. The research seeks to assess how structured exercise routines influence students' performance in various extracurricular activities, such as sports, music, and academic clubs, and to identify mechanisms through which exercise management impacts students' success. Methods: A quantitative approach was used, involving 200 students (100 male and 100 female) from 10 junior high schools in Medan. Data were gathered using surveys to assess exercise management (frequency, intensity, duration, and consistency) and performance assessments in extracurricular activities. Statistical analysis, including Pearson’s correlation coefficient and regression analysis, was conducted to examine the relationship between exercise management and extracurricular achievements. Results: The study found a moderate to strong positive correlation (r = 0.68, p < 0.01) between exercise management and extracurricular achievements. Regression analysis revealed that exercise management accounted for 46.2% of the variance in extracurricular achievements. Students who engaged in structured physical exercise performed better in extracurricular activities, demonstrating improvements in discipline, time management, and teamwork. Conclusion: The study concludes that exercise management plays a significant role in improving students' performance in extracurricular activities. Schools should integrate structured physical activity into their extracurricular programs to enhance students' overall development. Further research should explore causal relationships and investigate additional factors influencing this connection.
Co-Authors Andi Sinsearif Zega Andreas Matondang Angga Maulana Ani Suryani Batubara Anugrah Panca Dinata Aszon Fisi Lahagu Dicky Hendrawan Muhammad Ridho Maulana Natasya Br Ginting Novita Putri Yani Ndruru Novita Putri Yani Ndruru Parlindungan Nababan Trifosa Angelina Sembiring Yunita Mandasari Yunita Mandasari