PENGARUH AKTIVITAS FISIK, POLA MAKAN DAN KOMPOSISI TUBUH TERHADAP KEBUGARAN JASMANI (Studi Kausalitas pada Remaja Usia 13–15 Tahun di DKI Jakarta)

KARISDHA PRADITYANA, . (2026) PENGARUH AKTIVITAS FISIK, POLA MAKAN DAN KOMPOSISI TUBUH TERHADAP KEBUGARAN JASMANI (Studi Kausalitas pada Remaja Usia 13–15 Tahun di DKI Jakarta). Doktor thesis, UNIVERSITAS NEGERI JAKARTA.

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Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh langsung dan tidak langsung aktivitas fisik dan pola makan terhadap kebugaran jasmani dengan komposisi tubuh sebagai variabel mediasi pada remaja usia 13–15 tahun di DKI Jakarta. Penelitian ini menggunakan pendekatan kuantitatif dengan desain eksplanatori melalui analisis Structural Equation Modeling–Partial Least Squares (SEM-PLS) dengan jumlah populasi 830.835 orang lalu sampel sebanyak 300 remaja. Aktivitas fisik dan pola makan diukur menggunakan kuesioner terstandar, komposisi tubuh diukur melalui indikator antropometri, sedangkan kebugaran jasmani diukur melalui tes kebugaran yang meliputi daya tahan kardiorespirasi, kekuatan dan daya tahan otot, serta fleksibilitas. Hasil menunjukkan bahwa aktivitas fisik berpengaruh positif dan signifikan terhadap kebugaran jasmani (β = 0,105; p = 0,040), meskipun dengan kontribusi kecil. Pola makan menjadi determinan langsung paling dominan (β = 0,482; p = 0,000), dan komposisi tubuh juga berpengaruh signifikan (β = 0,251; p = 0,000). Selain itu, aktivitas fisik dan pola makan berpengaruh signifikan terhadap komposisi tubuh serta memiliki efek tidak langsung terhadap kebugaran jasmani melalui variabel tersebut. Model menjelaskan 53,6% variasi kebugaran jasmani dan 43,6% variasi komposisi tubuh. Temuan ini menegaskan bahwa peningkatan kebugaran jasmani remaja memerlukan pendekatan terpadu yang mengintegrasikan aktivitas fisik, pola makan, dan pengelolaan komposisi tubuh, serta memperkuat model kausal multidimensional kebugaran jasmani remaja. Kata kunci: aktivitas fisik, kebugaran jasmani, kompoisis tubuh, pola makan. THE EFFECT OF PHYSICAL ACTIVITY, DIETARY PATTERNS, AND BODY COMPOSITION ON PHYSICAL FITNESS (A Causal Study among Adolescents Aged 13–15 Years in DKI Jakarta) Karisdha Pradityana ABSTRACT This study aims to analyze the direct and indirect effects of physical activity and dietary patterns on physical fitness, with body composition serving as a mediating variable among adolescents aged 13–15 years in DKI Jakarta. This research employed a quantitative approach with an explanatory design using Structural Equation Modeling–Partial Least Squares (SEM-PLS) analysis, involving a sample of 300 adolescents. Physical activity and dietary patterns were measured using standardized questionnaires, body composition was assessed through anthropometric indicators, while physical fitness was measured through fitness tests including cardiorespiratory endurance, muscular strength and endurance, and flexibility. The results showed that physical activity had a positive and significant effect on physical fitness (β = 0.105; p = 0.040), although with a small contribution. Diet was the most dominant direct determinant (β = 0.482; p = 0.000), and body composition also had a significant effect (β = 0.251; p = 0.000). In addition, physical activity and diet significantly influenced body composition and had an indirect effect on physical fitness through these variables. The model explained 53.6% of the variation in physical fitness and 43.6% of the variation in body composition. These findings confirm that improving adolescent physical fitness requires an integrated approach that integrates physical activity, diet, and body composition management, and strengthens the multidimensional causal model of adolescent physical fitness. Keywords: physical activity, physical fitness, body composition, dietary patterns.

Item Type:	Thesis (Doktor)
Additional Information:	1). Prof. Dr. Widiastuti, M.Pd. 2). Prof. Dr. Samsudin, M.Pd
Subjects:	Olah Raga dan Seni Pertunjukan > Pendidikan Olah Raga Olah Raga dan Seni Pertunjukan > Pendidikan Olah Raga > Kepelatihan,Manajemen Kepelatihan
Divisions:	PASCASARJANA > S3 Pendidikan Olahraga
Depositing User:	Karisdha Pradityana .
Date Deposited:	23 Jun 2026 08:23
Last Modified:	23 Jun 2026 08:23
URI:	http://repository.unj.ac.id/id/eprint/66068

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