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Lower-Body Power, Body Composition, and Agility Performance Among Youth Badminton Athletes Naufal Hasyim, Rafif Rifqi; Bahri, Samsul; Muhammad, Mar’ie; Juniarsyah, Agung Dwi
JSKK (Jurnal Sains Keolahragaan dan Kesehatan) Vol 10 No 2 (2025)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jskk.2025.10.2.2

Abstract

Agility is an important component in badminton. Agility is the ability to move with speed and accuracy to reach the shuttlecock in various corners of the court. This study aims to analyze the correlation between lower-limb power and body composition on agility performance in badminton athletes. Participants were 27 female badminton athletes aged 15.44 ± 0.97 years. Body composition (height, body fat percentage - BF%, body mass, BMI, skeletal whole body muscle - SM%), countermovement jump - CMJ, and t-test agility was measured. The data was analyzed using descriptive statistics, Spearman correlation test and hierarchical multiple regression. Spearman correlation test showed that there was no significant relationship with agility (r = -0.40, p = 0.884). Hierarchical regression analysis showed that age, body composition, and CMJ only explained 17.4% of the variance in agility, with a statistically insignificant contribution (ΔR² = 0.019, p = 0.483). Among the independent variables, BF% had a strong positive relationship with body mass (r = 0.763, p < 0.01), indicating that the higher BF%, the higher the body mass. Meanwhile, SM% had a significant negative correlation with BF% (r = -0.498, p < 0.01) and body mass (r = -0.506; p < 0.01), indicating that the higher SM%, the lower the BF% and body mass. Although the variables tested did not contribute significantly to agility, various previous studies have shown that training programs such as plyometrics, core strength training, and Velocity-Based Resistance Training (VBRT) are effective in increasing lower-limb power, which also affects agility. Keywords: agility, body fat, skeletal muscle, lower-limb power, CMJ, youth, badminton
Criminal Law Enforcement in the Suppression of the Crime of Human Trafficking Muhammad, Mar’ie; Thalib, Hambali; Salle, Salle
Al-Ishlah: Jurnal Ilmiah Hukum Vol 29 No 1 (2026): December 2025 - May 2026
Publisher : Fakultas Hukum, Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56087/9emjtk70

Abstract

This study aims to analyze the regulation and enforcement of criminal law in combating the crime of human trafficking in Indonesia from a normative legal perspective. The research method employed is normative legal research using statutory and conceptual approaches through an examination of the 1945 Constitution of the Republic of Indonesia, Law Number 21 of 2007 on the Eradication of the Crime of Human Trafficking, the Criminal Code (KUHP), and the Criminal Procedure Code (KUHAP). The findings indicate that, normatively, Indonesia has established a relatively comprehensive legal framework through the Anti-Trafficking Law (UU PTPPO) as a lex specialis emphasizing both the punishment of perpetrators and the protection of victims. However, the effectiveness of law enforcement still faces various challenges, including the complexity of proving chain crimes, limited investigative capacity—particularly regarding digital evidence—disharmony in the application of legal provisions, weak inter-agency coordination, and suboptimal victim recovery mechanisms that risk causing revictimization. Effective criminal law enforcement requires the integration of repressive and restorative approaches through the implementation of a victim-centered approach, strengthening witness and victim protection mechanisms, enhancing technology-based evidentiary capacity, and promoting cross-sectoral as well as international coordination. Therefore, criminal law enforcement against human trafficking must be directed not only toward legal certainty but also toward substantive justice and the restoration of victims’ dignity within a human rights–oriented rule of law framework