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Fitness and Nutrition Strongly Influence Academic Performance of Indonesian Naval Academy Cadets
A 2026 study led by Taufik Shigit Noveriyanto from the Indonesian Naval Staff and Command School, together with Hanjar Kristiyanto and Leila Kristian, finds that physical fitness and nutritional status significantly shape the academic performance of third-level cadets at the Indonesian Naval Academy (AAL). Published in the International Journal of Integrative Sciences, the research shows that nutrition plays a more dominant role than physical fitness in determining cadets’ Grade Point Average (GPA). These findings matter because they highlight how physical health and diet directly impact learning outcomes in high-pressure military education environments.
The Indonesian Naval Academy is responsible for producing professional naval officers equipped with physical endurance, intellectual capacity, and leadership skills. In such a demanding system, cadets face intense academic schedules alongside rigorous physical training. Maintaining both physical fitness and balanced nutrition becomes a constant challenge. Yet, until now, limited data has clearly measured how these two factors contribute to academic success.
Bridging Health and Academic Performance
The research addresses a growing concern in education and military training: the link between physical condition and cognitive performance. Strong physical fitness supports oxygen flow to the brain, improving concentration and memory. At the same time, proper nutrition provides the energy and nutrients required for sustained mental performance.
Poor nutrition or inadequate fitness can lead to fatigue, reduced focus, and lower academic achievement. In military settings like the Indonesian Naval Academy, these risks are amplified due to the intensity of daily training and learning demands.
Simple Data, Clear Approach
The study uses a quantitative survey approach involving 150 cadets from a total population of 239 third-level cadets in the 72nd cohort. The researchers selected participants using random sampling to ensure representation.
Data collection focused on three key variables:
- Physical fitness, measured through standardized tests such as running, push-ups, sit-ups, shuttle runs, and swimming
- Nutritional status, assessed using Body Mass Index (BMI) based on height and weight
- Academic performance, represented by cadets’ GPA from official academic records
The team analyzed the data using multiple linear regression to determine how each factor influences academic outcomes, both individually and together.
Key Findings: Nutrition Leads, Fitness Follows
The results confirm that both physical fitness and nutritional status have a positive and significant impact on academic performance. However, nutritional status emerges as the stronger predictor.
Key findings include:
- Physical fitness improves GPA, with measurable positive effects on academic outcomes
- Nutritional status has a stronger influence, indicating that diet plays a more critical role in learning performance
- Combined impact is significant, with both variables jointly affecting academic results
- 36.6% of GPA variation is explained by fitness and nutrition, while the remaining 63.4% is influenced by other factors such as motivation, learning methods, and psychological conditions
The regression model shows that improvements in BMI within a healthy range contribute more to GPA increases than improvements in physical fitness scores.
Why Nutrition Matters More
The study highlights that nutrition acts as the foundation for both physical and cognitive performance. Adequate intake of nutrients supports brain function, including memory, concentration, and neurotransmitter activity. Without proper nutrition, even well-trained cadets may struggle to maintain academic performance.
Taufik Shigit Noveriyanto explains that nutritional adequacy is a “primary prerequisite” before physical fitness can fully contribute to academic success. This insight reinforces the need for balanced dietary systems in military education institutions.
A Combined Approach to Cadet Development
The findings also show that physical fitness and nutrition work best when developed together. Cadets with strong physical endurance and proper nutrition are better equipped to handle demanding schedules, manage stress, and maintain consistent academic performance.
The research emphasizes that separating physical training from nutritional management reduces effectiveness. Instead, both must be integrated into a unified development strategy.
Real-World Impact for Military and Education Systems
The implications extend beyond the Indonesian Naval Academy. The study provides a practical framework for improving student performance in both military and civilian education systems.
For military institutions:
- Develop structured physical training programs with regular evaluation
- Implement scientifically designed meal plans tailored to cadet needs
- Monitor BMI and fitness levels to detect early health risks
For educators and policymakers:
- Recognize nutrition as a key factor in academic success
- Integrate health and wellness programs into educational systems
- Promote balanced lifestyles among students
For broader society:
- Reinforce the importance of nutrition in cognitive development
- Encourage healthy habits among young adults and students
The study also opens opportunities for further research, particularly in exploring additional factors such as sleep quality, mental health, and learning motivation.
Academic Insight
The authors underline that academic success is not determined by intellectual ability alone. As highlighted by the research team from the Indonesian Naval Staff and Command School, physical readiness and nutritional balance form the foundation for sustained learning performance.
This perspective aligns with broader educational trends that emphasize holistic student development, combining physical health, mental resilience, and academic capability.
Author Profile
Taufik Shigit Noveriyanto is a researcher affiliated with the Indonesian Naval Staff and Command School, specializing in military education and performance analysis.
Hanjar Kristiyanto is an academic with expertise in physical education and training systems.
Leila Kristian is a researcher focusing on human performance and educational evaluation.
Together, the authors focus on the intersection of physical health, nutrition, and academic achievement in structured training environments.
Source
DOI : https://doi.org/10.55927/ijis.v5i4.22
URL : https://journalijis.my.id/index.php/ijis/index
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