Afifan Yulfadinata, Pengaruh Metode High Intensity Interval Training (HIIT) Dan High Intensity Circuit Training (HICT) Terhadap Tingkat VO₂max, Anaerobic Treshold, dan Recovery Karateka. Disertasi. Surabaya. Fakultas Ilmu Keolahragaan dan Kesehatan,. 2024.Penelitian ini bertujuan untuk mengevaluasi efek dari latihan interval berkekuatan tinggi (HIIT) dan latihan sirkuit interval berkekuatan tinggi (HICT) pada kapasitas aerobik karateka, ambang anaerobik, dan pemulihan setelah latihan. Metode Penelitian menggunakan pendekatan mixed method dengan mengintegrasikan data kualitatif dan kuantitatif dalam satu analisis. Desain penelitian yang digunakan mixed method dengan rancangan deskriptif kualitatif pre and post test control group design. Subjek penelitian yang digunakan adalah Mahasiswa UKM karate Unesa yang berjumlah 80 orang. Subjek penelitian terdiri dari 30 karateka yang dibagi secara acak menjadi dua kelompok: kelompok HIIT (n=15), kelompok HICT (n=15). Kedua kelompok latihan melakukan program latihan selama 6 minggu, dengan frekuensi 3 kali seminggu. Kelompok HIIT melakukan latihan HIIT yang terdiri dari 8 set interval 20 detik kerja dan istirahat 10 detik pada intensitas yang tinggi (80-90% dari detak jantung maksimal). Kelompok HICT melakukan latihan sirkuit interval yang terdiri dari 8 metode latihan dengan durasi 20 detik kerja dan 10 detik gerak aktif, dengan intensitas yang tinggi (80-90% dari detak jantung maksimal). Analisis data menggunakan uji paired sample t-test dan Independent Sample T Test. Hasil analisis Hasil uji paired sample t-test membuktikan bahwa kelompok High-Intensity Interval Training (HIIT) maupun High-Intensity Circuit Training (HICT) secara signifikan dapat menurunkan denyut nadi recovery, baik pada menit pertama (p<0,05), kedua (p<0,05), dan ketiga (p<0,05). Menurut hasil uji independent sample t-test, menunjukkan perbedaan yang terjadi pada kelompok High-Intensity Interval. Training (HIIT) maupun High-Intensity Circuit Training (HICT) dapat menurunkan denyut nadi recovery, baik pada selisih HR Max dengan HR Recovery 1 (p-value = 0,880), HR Max dengan HR Recovery 2 (p-value = 0,752), maupun HR Max dengan HR Recovery 3 (p-value = 0,726). Hasil temuan membuktikan bahwa kedua kelompok tersebut dapat meningkatkan Anaerobic Threshold atlet karateka.

Afifan Yulfadinata, The Effect of High Intensity Interval Training (HIIT) and High Intensity Circuit Training (HICT) Methods on Karateka's VO2max, Anaerobic Threshold and Recovery Levels. Dissertation. Surabaya. Faculty of Sports and Health Sciences. 2024. This study aimed to evaluate the effects of high-strength interval training (HIIT) and high-strength interval circuit training (HICT) on karateka’s aerobic capacity, anaerobic threshold, and post-exercise recovery. The research method uses a mixed method approach by integrating qualitative and quantitative data in one analysis. The research design used is a mixed method with a descriptive qualitative pre and post test control group design. The research subjects used were Unesa UKM karate students, totaling 80 people. The research subjects consisted of 30 karateka who were randomly divided into three groups: HIIT group (n=15), HICT group (n=15). An exercise program for 6 weeks, with a frequency of 3 times a week. The HIIT group performed HIIT training consisting of 8 sets of intervals of 20 seconds of work and 10 seconds of rest at high intensity (80-90% of maximum heart rate). The HICT group performed interval circuit training consisting of 8 exercises with a duration of 20 seconds of work and 10 seconds of active movement, at high intensity (80- 90% of maximum heart rate). Data analysis used the paired sample t-test and the Independent Sample T Test. Analysis results The results of the paired sample t-test prove that the High-Intensity Interval Training (HIIT) and High-Intensity Circuit Training (HICT) groups can significantly reduce the recovery pulse rate, both in the first (p<0.05), second (p<0.05), and third (p<0.05) minutes. .05). According to the results of the independent sample t-test, it shows that the differences  between the HIIT and HICT groups were not significant in reducing the recovery heart rate, both in the difference between HR Max and HR Recovery 1 (p-value = 0.880), HR Max and HR Recovery 2 (p-value = 0.752), as well as HR Max with HR Recovery 3 (p-value = 0.726). These results prove that the two groups can increase the Anaerobic Threshold of karateka athletes.

Keywords: Karate, HIIT, HICT, VO₂Max, Anaerobic Threshold, Recovery