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Masnur Ali
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Jurnal Olahraga Rekreasi Masyarakat
Published by Universitas Negeri Jakarta
ISSN : -     EISSN : 29853389     DOI : https://doi.org/10.21009/jor
Core Subject : Health, Education, Social,
Education Public Health Social Sciences
Journal Olahraga Rekreasi Masyarakat is a Journal of Sports, Recreation and Society Science published by the Recreational Sports Education Study Program, Faculty of Sports Science, State University of Jakarta. The name Recreational Sports and Society was chosen based on the name of the Sport and Recreation Study Program which is philosophically identical to Sports, Health and Recreation Science, while the addition of the word Community aims to make the research that has been studied can be implemented in the community. Journal Olahraga Rekreasi Masyarakat is published twice a year at intervals, the first edition in June and the second edition in November. Each journal issue contains an article that examines, discusses the latest research or findings in Sports, Recreation and Society Science. Scientific journal writers come from the Academic community (Students). E-ISSN Number : 2985-3389
Arjuna Subject : Umum - Umum
Articles 112 Documents
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EFFICACY OF POSTERIOR CAPSULE STRETCHING AND ECCENTRIC LOADING ON FUNCTIONAL KINEMATICS AND SERVE VELOCITY IN ADOLESCENT VOLLEYBALL ATHLETES WITH GIRD: A RANDOMIZED CONTROLLED TRIAL Samer Jaafar Mohsin; Ali Hussien Mnade
Journal Olahraga Rekat (Rekreasi Masyarakat) Vol. 5 No. 1 (2026): In Press: Jurnal Olahraga ReKat (Rekreasi Masyarakat)
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/jor.v5i2.69063

Abstract

Background. Glenohumeral Internal Rotation Deficit (GIRD) is a significant limitation to athletic performance. Newer research findings suggest that the incidence of Glenohumeral Internal Rotation Deficit (GIRD) amongst young volleyball players stands at around 37.5% (Mine et al., 2024; Wilcox et al., 2021). Objectives. To this end, the current study investigates a novel rehabilitation protocol comprising posterior capsule stretching in association with eccentric strengthening. Method. Twenty-four adolescent athletes were randomly assigned to an experimental (EG) or a control group (CG; n = 12 per group) in a single-blind experimental design. In the experiment group, there was an 8-week targeted stretching protocol together with eccentric training for the external rotator muscles. Results. Statistical analyses indicated that the experimental group significantly outperformed control on each post-test measure (p< 0.001; 95% CI), with large effect sizes Cohen's d > 0.8). Conclusion. The experimental group experienced significant changes in internal rotation range of motion, functional strength and spike serve speed. Combining eccentric loading with targeted stretching appears effective for restoring shoulder kinematic symmetry and performance parameters in young athletes.
BALLISTIC STRETCHING EXERCISES AND THEIR EFFECT ON EXPLOSIVE STRENGTH, FLEXIBILITY, STROKE LENGTH, AND STROKE FREQUENCY OF THE WORKING LIMBS IN YOUTH SWIMMERS OF WASIT GOVERNORATE CLUBS Mutaman Jabar Mohamed Hussein; Hasan Hadi Abed Hasuwni Alhamrawi; Hayder Mahdi Dakhil Al hlew
Journal Olahraga Rekat (Rekreasi Masyarakat) Vol. 5 No. 1 (2026): In Press: Jurnal Olahraga ReKat (Rekreasi Masyarakat)
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/jor.v5i2.69064

Abstract

Background. The researcher focused on employing ballistic stretching exercises to develop certain forms of muscular strength and flexibility, which are considered essential requirements for swimmers. These exercises are distinguished by their ability to enhance flexibility through rapid, explosive movements performed within a specific range of motion, with the potential for progressive improvement through continued training, depending on the anatomical characteristics of the joint and muscle. Objectives. The study aimed to design ballistic stretching exercises and identify their effects on selected forms of strength and flexibility. Method. The researcher adopted an experimental method using a single-group design with pre- and post-tests. The research sample was intentionally selected and consisted of youth swimmers from Al-Kut Club in Wasit Governorate, aged (16–17) years, with a total of (10) participants. Statistical analysis was conducted using the Statistical Package for the Social Sciences (SPSS) to obtain the study results. Results. Significant at the level (0.05) when the error level ≤ or = (0.05), and the tabulated t-value = (2.262). The findings indicated that ballistic stretching exercises led to noticeable improvements in explosive strength of both the arms and legs, speed-strength, as well as flexibility. Conclusion. The development in swimming performance is attributed to the scientifically structured curriculum, which utilized appropriate intensity, volume, and density. The use of specialized equipment, such as resistance bands and weights during stretching, addressed performance deficits and increased training unit efficiency.

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