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Analisis Efektivitas Teknik Tendangan Dollyo Chagi Melalui Metode Latihan Beban Kaki Terhadap Kecepatan Dan Akurasi Di Dojang TMC Charmila Tandi Rerung
Jurnal Pendidikan Kepelatihan Olahraga: PEJUANG Vol. 1 No. 2 (2025): 30 Juni 2025
Publisher : Program Studi Pendidikan Kepelatihan Olahraga

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This study aims to analyze the effectiveness of leg weight training methods on improving speed and accuracy of dollyo chagi kicks in TMC Taekwondo Mountain Child athletes. This research used a quasi-experimental design with pre-test and post-test control group design involving 20 taekwondo athletes divided into experimental group (n=10) and control group (n=10). The experimental group received leg weight training combined with conventional training for 8 weeks, while the control group only received conventional training. Speed was measured using photoelectric timing gates and accuracy using target scoring system. Data analysis used paired t-test and independent t-test with significance level α=0.05. Results showed significant improvement in experimental group for kick speed (12.3% improvement, p=0.003) and accuracy (15.7% improvement, p=0.002) compared to control group which only showed 2.5% and 4.2% improvement respectively. Comparison between groups showed significant differences (p<0.05) with experimental group being superior. Leg weight training method is effective for improving speed and accuracy of dollyo chagi kicks in TMC Mountain Child taekwondo athletes.

Implementation of Scouting Values in Shaping Students' Nationalism Attitudes Through Sports Activities Herman Herman; Charmila Tandi Rerung; Siti Nurhalizah Mutia Aulria
Jurnal Pendidikan Kepelatihan Olahraga: PEJUANG Vol. 2 No. 1 (2026): Februari 2026
Publisher : Program Studi Pendidikan Kepelatihan Olahraga

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This study aims to analyze the implementation of scouting values integrated with sports activities in shaping students' nationalism attitudes at SMA Negeri 6 Sinjai. Sports activities such as team sports, traditional games, and physical training are increasingly recognized as a powerful medium for character education and nationalism building. This research is a descriptive qualitative study with research subjects consisting of all members of the Scout extracurricular, totaling 26 students. Data collection was conducted through observation, interviews, and documentation in October 2025. The results showed that the integration of scouting values with sports activities including discipline, cooperation, leadership, fair play, and love for the homeland plays a crucial role in shaping students' nationalism attitudes. Scout activities combined with structured sports programs carried out regularly have a positive impact on understanding and practicing national values among students. The findings indicate that scouting values are reinforced through various structured activities including routine training, camping, exploration, social service, and sport-based games. These values significantly contribute to developing students' sense of patriotism, unity, and national responsibility.

On The Job Training Assistance at UPTD SDN 34 Pakere to Improve Teacher Competence in Physical Activity-Based Learning Arga; La Ode Ahmad Yusran; Muhammad Arkanul Arba'; Charmila Tandi Rerung; Siti Nurhalizah Mutia Aulria; A. Sakti Safitri; Fatimah
Jurnal Perjuangan dan Pengabdian Masyarakat : JPPM Vol. 2 No. 1 (2026): 31 Januari 2026
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat Universitas Pejuang Republik Indonesia

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Teachers are the main actors in implementing effective and meaningful learning for students. At UPTD SDN 34 Pakere, teachers have shown high dedication in carrying out their teaching duties but still face challenges in integrating physical activities into daily learning processes. Limited understanding of physical activity-based learning methods and lack of practical experience in implementing them are the main obstacles. This Community Service activity aims to improve teacher competence through on-the-job training (OJT) assistance in integrating physical activities into classroom learning. The implementation method uses a descriptiveparticipatory approach involving 12 teachers from UPTD SDN 34 Pakere. The activity was carried out through stages of socialization, practical workshops, implementation assistance in the classroom, and joint reflection. Data collection techniques were carried out qualitatively through direct observation, interviews, and activity documentation. The results showed that OJT assistance was able to increase teachers’ understanding of the importance of integrating physical activity in learning, improve practical skills in designing and implementing physical activitybased learning, and increase teachers’ confidence in innovating in the classroom. Teachers began to understand that physical activity is not only important for student health, but can also improve concentration, learning motivation, and student learning outcomes. The OJT approach that provides direct assistance in the field has proven effective in helping teachers overcome technical barriers and improve the implementation of more active and enjoyable learning. This activity shows that OJT assistance can be an applicable and sustainable teacher professional development strategy in elementary school environments.

Workshop on Deep Learning Transformation of Project Based Learning and Digitalization of KKG Cluster 1 North Sinjai Charmila Tandi Rerung; Arga Arga; Siti Nurhalizah Mutia Aulria; Muhammad Arkanul Arba; Martono Martono
Jurnal Perjuangan dan Pengabdian Masyarakat : JPPM Vol. 2 No. 2 (2026): 31 Mei 2026
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat Universitas Pejuang Republik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.66968/v3k7jt38

This community service activity departs from the fact that most of the teachers who are members of the Teacher Working Group (KKG) Cluster 1 North Sinjai District is still carrying out learning in the old way, sit-note-memorize, without much room for students to think or create. On the other hand, the demands of the applicable curriculum actually encourage teachers to be able to design meaningful and project-based learning, as well as be fluent in using digital devices in the classroom. This gap between demands and reality is the background for the implementation of this workshop. The activity is designed in stages ranging from socialization of deep learning concepts, Project Based Learning (PjBL) design training, introduction to digital platforms, assistance in developing teaching tools, to project-based teaching simulations in groups. All teachers who are members of KKG Cluster 1 North Sinjai are actively involved, not just as listeners. Evaluation was carried out through direct observation, reflective discussions, and participant response questionnaires. The results are quite encouraging, teachers are beginning to understand what deep learning is and how to apply it through projects, are able to develop applicable learning project designs, and have dared to try several digital platforms to support the teaching process. More than that, their enthusiasm and confidence to innovate also grew. In the future, the PjBL approach combined with digitalization is expected not to stop at the training room, but to be truly implemented and developed sustainably in their respective schools.

The Relationship Between Strength and Endurance Training on Muscle Fiber Adaptation: A Systematic Review Charmila Tandi Rerung
International Journal of Experimental Sports Science Research Vol. 2 No. 1 (2026): 30 January 2026
Publisher : Universitas Pejuang Republik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.66968/byxz4r77

Background: Muscle fiber adaptation is a central mechanism through which the human body responds to systematic physical training. Understanding the relationship between strength training and endurance training in shaping muscle fiber phenotype is critical for optimizing sports performance, health, and rehabilitation outcomes. Objectives: This narrative review examines the relationship between strength training and endurance training with respect to skeletal muscle fiber adaptations, including morphological, metabolic, and molecular changes in Type I and Type II fibers. Methods: A literature search was conducted using Google Scholar, PubMed, and Scopus (2015–2025) using relevant keywords. Studies involving human subjects with a minimum 4-week training intervention and fiber-type assessment via biopsy or myosin heavy chain (MHC) isoform analysis were included. Results: Strength training predominantly induces Type II fiber hypertrophy through mTORC1/IGF-1 signaling, increases cross-sectional area (CSA) of fast-twitch fibers, and preserves neuromuscular innervation of Type II fibers across the lifespan. Endurance training promotes Type I fiber dominance through PGC-1α/AMPK activation, mitochondrial biogenesis, and enhanced oxidative capacity. Concurrent training produces a mixed adaptive profile dominated by Type IIa hybrid fibers, with evidence of a small negative interference effect on Type I fiber hypertrophy. Aging-related Type II fiber atrophy is most effectively attenuated by chronic strength training. Conclusions: Strength and endurance training produce distinct but complementary adaptations in muscle fiber phenotype. Integrating periodized concurrent training can maximize overall fiber plasticity for diverse performance and health goals.

Changes in Muscle Fiber Characteristics Due to Resistance and Endurance Training Programs in Sports Coaching Education Students at UPRI Abd. Haris; Nurul Octaviani Basri; Charmila Tandi Rerung; Siti Nurhalizah Mutia Aulria
International Journal of Experimental Sports Science Research Vol. 1 No. 2 (2025): 30 July 2025
Publisher : Universitas Pejuang Republik Indonesia

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Background: Muscle fiber composition is a fundamental determinant of physical performance and athletic potential. Systematic training programs, particularly resistance and endurance training, are known to induce distinct adaptations in Type I (slow-twitch) and Type II (fast-twitch) muscle fibers at morphological, metabolic, and molecular levels. Objectives: This study aimed to analyze changes in muscle fiber characteristics including cross-sectional area (CSA), myosin heavy chain (MHC) isoform expression, and oxidative enzyme activity following 12 weeks of structured resistance and endurance training programs in Sports Coaching Education students at Universitas Pejuang Republik Indonesia (UPRI). Methods: A quasi-experimental design with pre-test and post-test was applied to 40 male students (aged 18–22 years) randomly assigned to resistance training (RT, n=20) or endurance training (ET, n=20) groups. Physical performance tests (1RM bench press, VO₂max beep test, vertical jump, and 30-meter sprint) were conducted before and after the 12-week intervention. Muscle fiber adaptation indicators were assessed via isokinetic dynamometry and functional indirect markers. Results: The RT group demonstrated significant increases in Type II fiber hypertrophy indicators (CSA estimated via ultrasound), maximum strength (1RM +23.4%), and explosive power (vertical jump +18.7%). The ET group showed improvements in aerobic capacity (VO₂max +16.2%), muscular endurance, and fatigue resistance consistent with a shift toward Type I fiber dominance. Conclusions: A 12-week structured training program produces distinct muscle fiber adaptations depending on modality. Resistance training promotes Type II fiber characteristics, while endurance training enhances Type I fiber qualities. These findings provide evidence-based guidance for program design in sports coaching education curricula.

Effect of Very Low Intensity Weight Squat Exercises ( Arga Arga; Muhammad Arkanul Arba'; Siti Nurhalizah Mutia Aulria; Charmila Tandi Rerung
International Journal of Experimental Sports Science Research Vol. 1 No. 1 (2025): 30 January 2025
Publisher : Universitas Pejuang Republik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.66968/f9cgvz53

Background: Leg strength is a fundamental physical component required by sports coaching education students to support both their academic practical activities and future professional roles as sports coaches. Traditional resistance training guidelines generally recommend moderate-to-high intensity loads (>60% 1-RM) to elicit meaningful strength gains. However, very low-intensity squat training combined with techniques such as slow-tempo execution and reduced rest intervals has recently emerged as a potential alternative for inducing strength adaptations, particularly for individuals seeking joint-friendly training options. Empirical evidence regarding the effectiveness of very low-intensity squat training in producing leg strength gains among sports coaching education students remains limited. Objectives: This study aimed to analyze the effect of very low-intensity squat training (<30% 1-RM) on leg strength among sports coaching education students. Methods: This study employed a quantitative approach using a Pre-Experimental One Group Pretest-Posttest Design. The participants consisted of 38 sports coaching education students selected through purposive sampling. The intervention was conducted over eight weeks with a frequency of three sessions per week, in which participants performed back squat exercises at an intensity below 30% of their one-repetition maximum (1-RM), executed with slow tempo and short inter-set rest intervals to maximize time under tension and metabolic stress. Leg strength was assessed using the back squat 1-RM test, while leg power was assessed using the standing broad jump test. Data were analyzed using descriptive statistics, the Shapiro-Wilk normality test, and Paired Sample t-Test at a significance level of α = 0.05. Results: The findings revealed significant improvements in leg strength and power following the intervention. Back squat 1-RM increased from 52.36 ± 9.14 kg to 64.78 ± 10.27 kg, representing a 23.73% improvement (p = 0.000). Standing broad jump distance increased from 178.42 ± 14.36 cm to 196.85 ± 13.92 cm, representing a 10.33% improvement (p = 0.000). Conclusions: Very low-intensity squat training (<30% 1-RM) performed with slow tempo and short rest intervals significantly improves leg strength and power among sports coaching education students, suggesting that this training approach is a viable, joint-friendly alternative to conventional high-intensity resistance training for enhancing lower-limb strength in this population.

The Effect of Plyometric Box Jump Exercises on Leg Power and Freestyle Swimming Start Speed in Paotere Swimming Club Makassar Athletes Siti Nurhalizah Mutia Aulria; Charmila Tandi Rerung; Muhammad Syukur
International Journal of Experimental Sports Science Research Vol. 2 No. 2 (2026): 30 July 2026
Publisher : Universitas Pejuang Republik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.66968/ijessr/v2n2002

Backgroud: This study aimed to examine the effect of plyometric box jump training on leg power and 15-meter freestyle start speed among athletes of Paotere Swimming Club Makassar. Methods: The research was conducted in March 2026 at the Universitas Hasanuddin (Unhas) swimming pool, Makassar, using a quantitative pre-experimental method with a one-group pretest-posttest design. Twelve athletes were selected through purposive sampling and completed a six-week plyometric box jump program, three sessions per week, in addition to their regular swimming training. Leg power was measured using the standing broad jump test, while start speed was measured as the time required to cover 15 meters from the starting block. Results: Data were analyzed using the Shapiro-Wilk normality test and paired sample t-test. The results showed a significant improvement in leg power, with the average standing broad jump distance increasing from 1.98 ± 0.15 m to 2.19 ± 0.14 m (t = 6.812, p = 0.000, Cohen's d = 1.97, 95% CI 0.14, 0.28 m), and a significant reduction in 15-meter start time, from 7.45 ± 0.32 seconds to 6.98 ± 0.29 seconds (t = 5.934, p = 0.000, Cohen's d = 1.71, 95% CI -0.64, -0.30 s). Conclusions: These findings indicate that a structured plyometric box jump program can effectively enhance explosive leg power and accelerate the swimming start phase. It is recommended that swimming coaches incorporate periodized plyometric box jump exercises into dryland training to support faster and more powerful starts in freestyle swimming.

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