PENGARUH KEBUGARAN JASMANI TERHADAP NILAI AKADEMIK SISWA DI SMA NEGERI 1 WARU
THE INFLUENCE OF PHYSICAL FITNESS ON STUDENTS' ACADEMIC GRADES AT SMA NEGERI 1 WARU
Penelitian ini dilatarbelakangi oleh meningkatnya gaya hidup pasif pada siswa akibat penggunaan teknologi digital yang berpotensi menurunkan kebugaran jasmani dan menghambat capaian akademik. Fokus utama penelitian ini adalah untuk membuktikan apakah terdapat pengaruh signifikan kebugaran jasmani terhadap nilai akademik siswa kelas XI di SMA Negeri 1 Waru menggunakan instrumen Tes Kebugaran Siswa Indonesia (TKSI) dan rata-rata nilai rapor mata pelajaran inti (Matematika, Bahasa Indonesia, Fisika, dan Kimia). Metode yang digunakan adalah kuantitatif korelasional dengan pendekatan eksplanatori. Sampel penelitian berjumlah 72 siswa. Analisis data dilakukan melalui uji normalitas, uji korelasi Spearman’s Rho, dan uji hipotesis regresi linear dengan menggunakan bantuan SPSS. Karena data kebugaran jasmani tidak berdistribusi normal berdasarkan uji Kolmogorov-Smirnov (sig. 0,001), maka analisis hubungan dilakukan menggunakan uji korelasi Spearman’s Rho dan uji regresi linear sederhana untuk melihat kontribusi antarvariabel. Hasil penelitian menunjukkan bahwa terdapat pengaruh yang signifikan antara kebugaran jasmani terhadap nilai akademik siswa kelas XI SMA Negeri 1 Waru. Hal ini dibuktikan melalui uji Spearman’s Rho dengan koefisien korelasi 0,326 (sig. 0,005) serta uji regresi yang menghasilkan nilai signifikansi 0,001 dengan R Square sebesar 0,159. Temuan ini menunjukkan bahwa kebugaran jasmani berkontribusi sebesar 15,9% terhadap variasi nilai akademik. Kesimpulannya, semakin baik tingkat kebugaran jasmani siswa, maka semakin optimal pula kemampuan mereka dalam mengikuti proses pembelajaran dan mencapai hasil akademik yang lebih baik.
Kata kunci: kebugaran jasmani, nilai akademik, Tes Kebugaran Siswa Indonesia (TKSI), siswa sekolah menengah atas, hasil belajar.
This study was motivated by the increasing sedentary lifestyle among students due to the widespread use of digital technology, which has the potential to reduce physical fitness and hinder academic achievement. The main objective of this study was to determine whether physical fitness has a significant effect on the academic achievement of eleventh-grade students at SMA Negeri 1 Waru. Physical fitness was measured using the *Tes Kebugaran Siswa Indonesia* (TKSI), while academic achievement was represented by the average report card scores in core subjects, namely Mathematics, Indonesian Language, Physics, and Chemistry. This study employed a quantitative correlational approach with an explanatory method. The sample consisted of 72 students. Data were analyzed using normality tests, Spearman’s Rho correlation, and simple linear regression with the assistance of SPSS software. Since the physical fitness data were not normally distributed based on the Kolmogorov–Smirnov test (significance value = 0.001), the relationship between variables was analyzed using Spearman’s Rho correlation and simple linear regression to determine the contribution of physical fitness to academic achievement. The results revealed a significant effect of physical fitness on the academic achievement of eleventh-grade students at SMA Negeri 1 Waru. This finding was supported by the Spearman’s Rho correlation coefficient of 0.326 with a significance value of 0.005, indicating a positive and significant relationship between the two variables. Furthermore, the simple linear regression analysis yielded a significance value of 0.001 and an R Square value of 0.159. These results indicate that physical fitness contributes 15.9% to the variation in students’ academic achievement. In conclusion, higher levels of physical fitness are associated with better learning performance and improved academic outcomes among students.
Keywords: physical fitness, academic achievement, Indonesian Student Fitness Test (TKSI), senior high school students, learning outcomes.