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Associations Among Sleep Duration, Physical Activity, and Nutrient Intake in Korean Adults
Eunjae Lee1,2, Seung-Taek Lim2,3
1Institute of Sports & Arts Convergence (ISAC), Inha University, Incheon 22212, Republic of Korea.
Nutrients
|July 30, 2025
Summary
Adequate sleep duration is linked to higher physical activity and better nutrient intake, including vitamin D and protein. Maintaining healthy sleep involves increasing physical activity and ensuring sufficient protein and vitamin D consumption.
Area of Science:
- Nutritional Science
- Sleep Medicine
- Public Health
Background:
- Understanding the interplay between lifestyle factors like sleep, physical activity, and diet is crucial for public health.
- Previous research suggests potential links, but comprehensive analysis is needed.
Purpose of the Study:
- To investigate the relationship between sleep duration, physical activity, and nutrient intake (vitamin D, protein, carbohydrates, fat).
- To determine the interconnections among sleep, physical activity, and dietary habits in a large adult population.
Main Methods:
- Utilized data from 5491 participants (aged ≥18 years) from the 2023 9th Korea National Health and Nutrition Examination Survey (KNHANES).
- Assessed sleep duration, physical activity levels, and intake of key nutrients including vitamin D, carbohydrates, protein, and fat.
Main Results:
- Participants achieving ≥8 hours of sleep showed significantly higher levels of moderate-to-vigorous physical activity and intake of vitamin D, protein, and fat.
- Lower protein intake was associated with reduced likelihood of meeting physical activity recommendations and adequate sleep duration.
Conclusions:
- Sleep duration, physical activity, and nutrient intake, especially vitamin D and protein, are interconnected.
- Recommendations include increasing physical activity and ensuring adequate protein and vitamin D intake to support healthy sleep patterns.
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