Dietary Patterns and Physical Activity in Relation to Physical Fitness among Urban Adolescents in Indonesia: The Mediating Role of Body Composition
Vol.20,No.2(2026)
Physical fitness is a critical marker of adolescent health. Although physical activity and dietary patterns are widely recognized as behavioural correlates of fitness, evidence on their integrated pathways particularly through body composition remains limited among urban adolescents in developing countries. This cross-sectional explanatory study examined the direct and indirect associations of physical activity and dietary patterns with physical fitness, with body composition tested as a mediating variable, among urban adolescents aged 13–15 years in Jakarta, Indonesia (N = 300). Physical activity was measured using the Global Physical Activity Questionnaire (GPAQ) and expressed as total MET-minutes/week. Dietary patterns were assessed using an eight-item dietary behaviour questionnaire (five-point Likert scale), of which three indicators (protein-source intake, water intake, and reverse-scored fried-food consumption) were retained in the final formative construct. Body composition was measured using bioelectrical impedance analysis (Xiaomi Mi Body Scale 2). Physical fitness was assessed using the V Sit-and-Reach, Sit-Up, Squat Thrust, and Kasch Pulse Recovery Step tests. Data were analysed using Structural Equation Modelling–Partial Least Squares (SEM-PLS 4; Ringle et al., 2024). Dietary patterns showed the strongest direct association with physical fitness (β = 0.482, p < .001), larger than that observed for physical activity (β = 0.105, p = .040). Body composition was significantly associated with physical fitness (β = 0.251, p < .001) and carried significant indirect associations of both dietary patterns (β = 0.107, p < .001) and physical activity (β = 0.081, p < .001) with physical fitness. The model explained 53.6% of the variance in physical fitness (R² = 0.536, adjusted R² = 0.531) and 43.6% of the variance in body composition (R² = 0.436, adjusted R² = 0.432). Given the cross-sectional design, these findings should be interpreted as associations rather than confirmed causal or mediating effects. The results suggest that the retained dietary behaviours (protein-source and water intake and lower fried-food consumption) and body composition reflected here by lean mass and hydration status rather than adiposity are important correlates of adolescent fitness and support further longitudinal or experimental investigation of interventions that integrate nutrition improvement with physical activity promotion.
physical fitness; dietary patterns; body composition; adolescents;; SEM-PLS
Gabriel, Kelley Pettee, Byron C Jaeger, Cora E Lewis, Stephen Sidney, Erin E Dooley, Mercedes R Carnethon, David R Jacobs, et al. 2023. “Analysis of Cardiorespiratory Fitness in Early Adulthood and Midlife with All-Cause Mortality and Fatal or Nonfatal Cardiovascular Disease.” JAMA network open 6(2): e230842–e230842.
García-Hermoso, Antonio, Robinson Ramírez-Vélez, Yesenia García-Alonso, Alicia M Alonso-Martínez, and Mikel Izquierdo. 2020. “Association of Cardiorespiratory Fitness Levels during Youth with Health Risk Later in Life: A Systematic Review and Meta-Analysis.” JAMA pediatrics 174(10): 952–60.
Godoy-Cumillaf, Andrés, Paola Fuentes-Merino, Frano Giakoni-Ramírez, Marcelo Maldonado-Sandoval, José Bruneau-Chávez, and Eugenio Merellano-Navarro. 2025. “Impact on Body Composition and Physical Fitness of an Exercise Program Based on Immersive Virtual Reality: A Case Report.” Journal of Functional Morphology and Kinesiology 10(1): 56.
Kohl, Harold W, and Heather D Cook. 2013. “Physical Activity and Physical Education: Relationship to Growth, Development, and Health.” In Educating the Student Body: Taking Physical Activity and Physical Education to School, National Academies Press (US).
Laakso, Perttu T T, Francisco B Ortega, Pertti Huotari, Asko J Tolvanen, Urho M Kujala, and Timo T Jaakkola. 2024. “Adolescent Cardiorespiratory Fitness and Future Work Ability.” JAMA Network Open 7(3): e243861–e243861.
Lawson, Kate, and James Fleming. 2025. Time to “Power-Up” Esports Performance Nutrition: A Scoping Review.
Monsurat, Titilayo, Adekola Ridwan Ademola, Adewale Olugbemiga Adeleye, and Khadijat Oluwapelumi. 2023. Effect of a Nutrition Diet on Health Status of Physically Challenged Students at Ade Okubanjo Institute for the Blind, Ijebu-Igbo.
Pate, Russell, Maria Oria, Laura Pillsbury, and Committee on Fitness Measures and Health Outcomes in Youth. 2012. “Health-Related Fitness Measures for Youth: Cardiorespiratory Endurance.” In Fitness Measures and Health Outcomes in Youth, National Academies Press (US).
Raghuveer, Geetha, Jacob Hartz, David R Lubans, Timothy Takken, Jennifer L Wiltz, Michele Mietus-Snyder, Amanda M Perak, et al. 2020. “Cardiorespiratory Fitness in Youth: An Important Marker of Health: A Scientific Statement from the American Heart Association.” Circulation 142(7): e101–18.
Winpenny, Eleanor M., Miranda Smith, Tarra Penney, Campbell Foubister, Justin M. Guagliano, Rebecca Love, Chloe Clifford Astbury, Esther M.F. van Sluijs, and Kirsten Corder. 2020. “Changes in Physical Activity, Diet, and Body Weight across the Education and Employment Transitions of Early Adulthood: A Systematic Review and Meta-Analysis.” Obesity Reviews 21(4). doi:10.1111/obr.12962.
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