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All Journal Journal of Educational Studies
Hezron Alhim Dos Santos
Makassar State University
Humanities Education Languange, Linguistic, Communication & Media Social Sciences Other

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The Relationship Between Physical Activity, Body Image, and Self-Esteem Among High School Students in Makassar Hezron Alhim Dos Santos; Muhammad Ivan Miftahul Aziz; Maria Herlinda Dos Santos
Journal of Educational Studies Vol. 3 No. 3 (2025): Desember
Publisher : Lembaga Bale Literasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58218/jes.v3i3.3465

Abstract

Adolescence is a critical period in psychological development characterized by physical and social changes and the formation of self-identity. During this phase, physical activity, body image, and self-esteem are interrelated factors that play a role in determining students’ psychological well-being. This study aims to analyze the relationship between physical activity, body image, and self-esteem and to examine the role of body image as a mediating variable. This study employs a quantitative approach with a cross-sectional design. The sample consists of 400 high school students in Makassar City selected using proportionate stratified random sampling. Data were collected using the International Physical Activity Questionnaire-Short Form (IPAQ-SF), the Body Esteem Scale for Adolescents and Adults (BESAA), and the Rosenberg Self-Esteem Scale (RSES). Data analysis was conducted using Pearson’s correlation and regression analysis with bootstrapping mediation testing. The results of the study indicate that physical activity is positively associated with body image (r = 0.489; p < 0.01) and self-esteem (r = 0.421; p < 0.01). Body image is also positively associated with self-esteem (r = 0.597; p < 0.01). Furthermore, body image was found to act as a partial mediator in the relationship between physical activity and self-esteem, with a significant indirect effect (? = 0.224; p < 0.001). In conclusion, physical activity contributes to improved body image and self-esteem among students, both directly and indirectly through body image as a mediator. These findings underscore the importance of physical activity in supporting adolescents’ psychological health in the school setting.
Construction and Validation of a Needs-Based Speed Training Model for Karate Competition Maria Herlinda Dos Santos; Hezron Alhim Dos Santos; Endang Pratiwi
Journal of Educational Studies Vol. 4 No. 1 (2026): April
Publisher : Lembaga Bale Literasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58218/jes.v4i1.3488

Abstract

This study aims to construct, validate, and test the effectiveness of a speed training model based on the needs of karate competitions to increase the punching and kicking speed of karate athletes aged 15–17 years. The study used a Research and Development (R&D) method that adapted the steps of Borg and Gall, including needs analysis, model development, expert validation, revision, and effectiveness testing. The needs analysis was conducted through match observations, coach interviews, training program analysis, and literature review to identify the demands of modern kumite competitions. The developed model integrates movement speed and reaction speed components designed according to the characteristics of karate competitions. Validation involved sports coaching experts, karate experts, and movement learning experts. The effectiveness testing used a one-group pretest–posttest design on 65 karate athletes in the kumite category from the INKANAS Dojo in Bone Regency and Makassar City. The results showed that the developed model met the valid criteria and was feasible to be applied in the training process. The effectiveness test results showed a significant increase in the speed of athletes' punches and kicks, indicated by a decrease in the average time from 0.8161 seconds in the pretest to 0.4398 seconds in the posttest (t = 65.240; p < 0.001). These findings indicate that the competition-based training model is able to effectively improve speed performance and provides an alternative coaching approach that is more specific and relevant to the demands of modern kumite competitions.
Co-Authors Endang Pratiwi Muhammad Ivan Miftahul Aziz Santos, Maria Herlinda Dos