Muhammad Kharis Fajar, Agus Hariyanto, Endang Sri Wahjuni, Dwi Cahyo Kartiko, Gigih Siantoro, Yanyong Phanpheng, I Dewa Made Aryananda Wijaya Kusuma, Bayu Agung Pramono, Afif Rusdiawan, Adi Pranoto
Objectives. This study aimed to investigate the effects of Ice Compression For Fitness (ICEFIT) on reducing heart rate, Interleukin-6 (IL-6) levels, and fatigue index in soccer athletes after performing speed endurance training. Materials and methods. A total of 34 male students from the Football Coaching Department at the State University of Surabaya (Indonesia), aged 18-20 years, with a normal BMI, at least 10 years of football training experience, and no injuries in the past 6 months, were selected as research subjects and were given ICEFIT treatment for 4 weeks. Data collection was conducted by measuring heart rate, IL-6 levels, and fatigue index at both the pre-and post-intervention stages. Data analysis techniques included using the parametric paired sample t-test and independent sample t-test, with a significance level of 5 %. Results. The results showed that ICEFIT significantly reduced heart rate, IL-6 levels, and fatigue index in soccer athletes after speed endurance training (p ≤ 0.05). Furthermore, marked reductions in heart rate, IL-6 levels and fatigue index were observed between the groups (p ≤ 0.05). Conclusions. These findings demonstrate that ICEFIT is effective in reducing heart rate, IL-6 levels, and fatigue index in soccer athletes after speed endurance training. © Fajar, M. K., Hariyanto, A., Wahjuni, E. S., Kartiko, D. C., Siantoro, G., Phanpheng, Y., Kusuma, I. D. M. A. W., Pramono, B. A., Rusdiawan, A., & Pranoto, A., 2025.
Faculty of Sport and Health Science, Universitas Negeri Surabaya, Jl. Lidah Wetan, Lidah Wetan, Kec. Lakarsantri, Jawa Timur, Kota SBY, 60213, Indonesia; Department of Sport Coaching Education, Faculty of Sport and Health Science, Universitas Negeri Surabaya, Jl. Lidah Wetan, Lidah Wetan, Kec. Lakarsantri, Jawa Timur, Kota SBY, 60213, Indonesia; Faculty of Medicine, Universitas Negeri Surabaya, Jl. Lidah Wetan, Lidah Wetan, Kec. Lakarsantri, Jawa Timur, Kota SBY, 60213, Indonesia; Department of Physical Education, Health and Recreation, Faculty of Sport and Health Science, Universitas Negeri Surabaya, Jl. Lidah Wetan, Lidah Wetan, Kec. Lakarsantri, Jawa Timur, Kota SBY, 60213, Indonesia; Sports and Exercise Science Program, Faculty of Science and Technology, Loei Rajabhat University, 234 Loei-Chiang Khan Road, Loei, 42000, Thailand; Department of Sports Science, Faculty of Sport and Health Science, Universitas Negeri Surabaya, Jl. Lidah Wetan, Lidah Wetan, Kec. Lakarsantri, Jawa Timur, Kota SBY, 60213, Indonesia
