Penelitian ini bertujuan untuk menganalisis penurunan malondialdehyde (MDA) setelah latihan interval dan continuous di pagi hari pada perempuan obesitas. Penelitian ini adalah true experiment dengan rancangan penelitian a Basic Time Series Design dengan menggunakan subjek 27 perempuan obesitas usia 20-25 tahun, body mass index (BMI) 25-35 kg/m2, percentage body fat (PBF) di atas 30% dan VO2max 25-35 ml/kg/min dan secara random dibagi menjadi tiga kelompok, yaitu CON (n=9, kontrol tanpa intervensi), MIE (n=9, moderate interval exercise) dan MCE (n=9, moderate continuous exercise). Intervensi dilakukan di pagi hari pukul 07.00-09.00 WIB. Intervensi MIE dan MCE dilakukan selama 40 menit menggunakan treadmill. Pengambilan sampel darah dilakukan pre-exercise, 10 menit dan 6 jam post-exercise. Pengukuran serum MDA menggunakan metode Thiobarbituric Acid Reactive substance (TBARs). Teknik analisis data menggunakan uji ANOVA dan LSD post hoc test dengan Statistic Package for Social Science (SPSS) versi 21. Serum MDA menurun signifikan setelah 10 menit dan 6 jam pasca intervensi MIE dan MCE (P<0.05), tetapi tidak pada CON (P>0.05). Berdasarkan hasil penelitian disimpulkan bahwa serum MDA menurun setelah 10 menit dan 6 jam pasca intervensi MIE dan MCE dibandingkan dengan CON pada perempuan obesitas. Tetapi pola penurunan serum MDA pada MCE lebih rendah dibandingkan dengan MIE dan CON.

Study purpose. The ability to dribble is a very important skill in soccer, because dribbling skills in soccer aim to be able to pass opponents so that players have the opportunity to provide bait. However, there are still many students who have difficulty in dribbling in soccer games. Materials and methods. This research uses a descriptive method in the form of Classroom Action Research. In this study using a learning tool, namely the Learning Implementation Plan (RPP). The data collection instrument is a test using periodical notes. The subjects in this study were all class XI students of State Senior High School 1, Merau District, Ketapang Regency, totaling 39 students Results. The results showed that there was an increase in cycle I of 25,6%, but this figure was still relatively low, so it was necessary to continue in cycle II. Based on the results in cycle II, it showed that 89.7% of students completed, and there was a difference in the increase in cycle I and cycle II, namely 64.1%. Based on these results, there is an increase in learning outcomes to dribble (soccer) through problem based learning models. Conclusion. The results of this study indicate that the problem based learning model can actually improve the learning outcomes of herding in soccer games. These results can be used as a reference in PJOK learning, especially in big ball game material (soccer).

The study purpose was to analyze the effect of continuous exercise and modification interval exercise on decreasing malondialdehyde (MDA) and blood lactate levels in non-professional Shorinji Kempo athletes. Materials and methods. This study used a quasi-experimental method with a randomized pretest posttest-only group design. Subjects were 16 male adolescents aged 18-20, body mass index (BMI) 20-24 kg/m2, who had normal blood pressure, normal resting heart rate, and no history of chronic disease. The subjects were randomly divided into two groups: CEG (n = 8, continuous exercise group) and MIEG (n = 8, modification interval exercise group). Continuous and modification interval exercises were carried out in 30 minutes/exercise sessions, with an intensity of 75% HRmax and 75% RM, as often as 3 times/week, for one week. Measurements of resting heart rate, blood lactate and MDA levels were performed 30 minutes pre-exercise and 10 minutes post-exercise. The data analysis technique used the Paired Sample T-Test and the independent T-test with SPSS software version 21. Results. The results showed significant differences in resting heart rate, blood lactate and MDA levels pre-exercise vs. post-exercise on CEG and MIEG (p ≤ 0.05). A difference was also observed in Delta (Δ) heart rate pre-exercise vs. post-exercise on CEG (–3.88 ± 3.36 bpm) and MIEG (–15.25 ± 3.45 bpm) (p ≤ 0.001), but no differences were observed in the Delta (Δ) blood lactate and MDA levels in both groups. Conclusion. Based on the study results, it was shown that continuous exercise and modification interval exercise increase blood lactate and MDA levels shortly after intervention but both exercises could reduce acute stress, which was indicated by a decrease in resting heart rate.

This study aims to prove the improvement of learning outcomes from long service techniques in badminton games through problem-based learning models. The type of study used is the classroom action research design. The subjects of this study were students of Senior High School 2 Sukadana in the 2021–2022 school year, especially class X IPA students, totaling 25 students. The results showed an increase in cycle I, namely 28% completion, but there were still many students who were not complete, with a percentage of 72%. Based on the results in cycle II, it shows that there is a difference in the percentage achieved, namely, in cycle I, 28% of students are complete, and the last in cycle II shows a percentage of 92% of students are complete on the learning outcomes of the badminton long serve. The conclusion proves that the problem-based learning model can improve long-term service skills in badminton games. This research has provided new references related to physical education learning, where these results recommend that the problem-based learning model can be applied to solve badminton long serve problems.

Banyak sekali kesalahan yang dilakukan dalam melakukan pukulan forehand bagi pemula dalam belajar teknik dalam tenis lapangan. Kemampuan untuk melakukan rally merupakan kemampuan yang sangat penting untuk menjaga permainan. Kemampuan melakukan rally forehand khususnya harus ditingkatkan. Penelitian ini memiliki tujuan untuk mengetahui   kemampuan latihan rally 3 menit forehand pada mahasiswa prodi Pendidikan Kepelatihan Olahraga Universitas Tanjungpura semester tiga di penghujung semester pembelajaran. Sampel pada penelitian ini adalah mahasiswa prodi pendidikan Kepelatihan Olahraga Universitas Tanjungpura semester 3 yang sedang mengikuti mata kuliah tenis lapangan sebanyak 29 mahasiswa. Analisis data deskriptif statistik. Hasil penelitian ini menunjukkan bahwa kemampuan melakukan rally selama 3 menit jumlah keseluruhan pukulan terdapat 672 pukulan dengan 525 benar dan 147 salah atau hanya 22% pukulan salah dan 78% masih benar. Saran peneliti untuk meningkatkan  kemampuan rally tiga menit harus melakukan latihan rutin dan teratur agar pukulan forehand dapat meningkat, sehingga akan berpengaruh terhadap kemampuan seseorang dalam rally tiga menit.