Assessment of Nutrition Knowledge and Its Association with Body Composition in Adults

Gizem Elvan Hacıoğlu; Mutlu Tuçe Ülker; Bilge Tekin Elkaan; Elif Nur Özen

doi:10.31067/acusaglik.1809570

Assessment of Nutrition Knowledge and Its Association with Body Composition in Adults

Abstract

Background/Purpose: This study aimed to evaluate the nutritional knowledge levels of adult fitness center members and to examine the relationship between their nutritional knowledge and body composition. Method: A cross-sectional study was conducted with 200 participants (122 females, 78 males) aged 18-65 years from a fitness center in Istanbul. Anthropometric measurements were taken, and body composition was assessed using Bioelectrical Impedance Analysis (BIA). Nutritional knowledge levels were evaluated using the Nutrition Knowledge Level Scale for Adults (NKLSA). Descriptive statistics and Pearson correlation analysis were performed, with significance set at p<0.05. Results: The mean Basic Nutrition Knowledge scores were 52 for males and 53 for females, while Food Preferences scores averaged 37 and 38, respectively, indicating moderate knowledge levels. Regarding nutrition knowledge, 54.5% of the participants had a moderate level of basic nutrition knowledge, while 34.5% had a good level of knowledge about food preferences. The analysis revealed no statistically significant relationship between body fat percentage, BMI, and the scores of Basic Nutrition Knowledge and Food Preferences. The correlation coefficients were found to be very low, indicating a weak relationship between these variables. Conclusion: The findings suggest that fitness center members have moderate levels of nutritional knowledge, and this knowledge could potentially support healthier body composition. Improving nutritional knowledge may contribute to better body composition and overall health among physically active individuals.

Keywords

Supporting Institution

None

Ethical Statement

Ethical Statement: The study commenced after obtaining approval from the Istinye University Human Research Ethics Committee with the protocol number 25/01;25-83, dated 08.04.2025. All individuals included in the study were thoroughly informed about the purpose and duration of the study. Those who agreed to participate signed an informed consent form. The study was conducted in accordance with the Helsinki Declaration.

Thanks

None

References

1. Martín-Rodríguez A, Belinchón-deMiguel P, Rubio-Zarapuz A, et al. Advances in Understanding the Interplay between Dietary Practices, Body Composition, and Sports Performance in Athletes. Nutrients. 2024;16(4):571. doi:10.3390/nu16040571
2. Solly H, Badenhorst CE, McCauley M, et al. Athlete Preferences for Nutrition Education: Development of and Findings from a Quantitative Survey. Nutrients. 2023;15(11):2519. doi:10.3390/ nu15112519
3. Amawi A, AlKasasbeh W, Jaradat M, et al. Athletes’ nutritional demands: a narrative review of nutritional requirements. Front Nutr. 2024;10:1331854. doi:10.3389/fnut.2023.1331854
4. Sunuwar DR, Singh DR, Bohara MP, et al. Association of nutrition knowledge, practice, supplement use, and nutrient intake with strength performance among Taekwondo players in Nepal. Front Nutr. 2022;9:1004288. doi:10.3389/fnut.2022.1004288
5. International Olympic Committee. Nutrition for Athletes. https:// stillmed.olympic.org/media/Document%20Library/OlympicOrg/ IOC/Who-We-Are/Commissions/Medical-and-Scientific - Commission/EN-Nutrition-for-Athletes.pdf?utm Accessed September 2, 2025.
6. Aragon AA, Schoenfeld BJ, Wildman R, et al. International society of sports nutrition position stand: diets and body composition. J Int Soc Sports Nutr. 2017;14:16. doi:10.1186/s12970-017-0174-y
7. Bauhaus H, Jensen PM, Braun H, Thevis M. Evaluation of Validity and Reliability of a German General and Sports Nutrition Knowledge Questionnaire for Athletes and Coaches (GSNKQ-AC). Nutrients. 2023;15(22):4844. doi:10.3390/nu15224844
8. Arnaoutis G, Alepoudea M, Tambalis KD, Sidossis LS. Dietary Intake, Body Composition, and Nutritional Knowledge of Elite Handball Players. Nutrients. 2024;16(16):2773. doi:10.3390/nu16162773

9. Sebastiá-Rico J, Soriano JM, González-Gálvez N, Martínez-Sanz JM. Body Composition of Male Professional Soccer Players Using Different Measurement Methods: A Systematic Review and Meta- Analysis. Nutrients. 2023;15(5):1160. doi:10.3390/nu15051160
10. Campa F, Toselli S, Mazzilli M, Gobbo LA, Coratella G. Assessment of Body Composition in Athletes: A Narrative Review of Available Methods with Special Reference to Quantitative and Qualitative Bioimpedance Analysis. Nutrients. 2021;13(5):1620. doi:10.3390/ nu13051620
11. Santhanam P, Nath T, Peng C, et al. Artificial intelligence and body composition. Diabetes Metab Syndr. 2023;17(3):102732. doi:10.1016/j.dsx.2023.102732
12. Foo WL, Faghy MA, Sparks A, Newbury JW, Gough LA. The Effects of a Nutrition Education Intervention on Sports Nutrition Knowledge during a Competitive Season in Highly Trained Adolescent Swimmers. Nutrients. 2021;13(8):2713. doi:10.3390/nu13082713
13. Magee MK, Jones MT, Fields JB, et al. Body Composition, Energy Availability, Risk of Eating Disorder, and Sport Nutrition Knowledge in Young Athletes. Nutrients. 2023;15(6):1502. doi:10.3390/ nu15061502
14. Marfell-Jones MJ, Olds T, Stewart AD, Carter L. International Standards for Anthropometric Assessment. Potchefstroom, South Africa: ISAK; 2006.
15. World Health Organization. Obesity and overweight. https://www. who.int/news-room/fact-sheets/detail/obesity-and-overweight Published 2025. Accessed September 2, 2025.
16. Batmaz H. Development and validity-reliability study of a nutrition knowledge level scale for adults [master’s thesis]. Istanbul: Marmara University, Institute of Health Sciences; 2018.
17. Jagim AR, Fields JB, Magee M, et al. The Influence of Sport Nutrition Knowledge on Body Composition and Perceptions of Dietary Requirements in Collegiate Athletes. Nutrients. 2021;13(7):2239. doi:10.3390/nu13072239
18. Jagim AR, Merfeld BR, Ambrosius A, et al. Nutrition Knowledge and Perceived Dietary Requirements of Adolescent Student-Athletes: A Pilot Study. Nutrients. 2024;17(1):133. doi:10.3390/nu17010133
19. Condo D, Lohman R, Kelly M, Carr A. Nutritional Intake, Sports Nutrition Knowledge and Energy Availability in Female Australian Rules Football Players. Nutrients. 2019;11(5):971. doi:10.3390/ nu11050971
20. Sharples A, Duffield R, Wade J, Fullagar HHK. Nutritional knowledge, attitudes and behaviours in rugby league; influences of age, body composition and ancestry. J Int Soc Sports Nutr. 2024;21(1):2411714. doi:10.1080/15502783.2024.2411714
21. Serban DM, Ursoniu S, Moleriu RD, Banu AM, Serban CL. Mindful Eating, Nutrition Knowledge, and Weight Status among Medical Students: Implications for Health and Counseling Practices. Nutrients. 2024;16(12):1894. doi:10.3390/nu16121894
22. Elsahoryi NA, Trakman G, Al Kilani A. General and sports nutrition knowledge among Jordanian adult coaches and athletes: A crosssectional survey. PLoS One. 2021;16(11):e0258123. doi:10.1371/ journal.pone.0258123
23. Gruber M, Iwuchukwu CG, Sperr E, König J. What do people know about food, nutrition and health? General nutrition knowledge in the Austrian population. Nutrients. 2022;14(22):4729. doi:10.3390/ nu14224729
24. Sahin E, Sanlier N. Relationships among nutrition knowledge level, healthy eating obsessions, body image, and social media usage in females: a cross-sectional study. BMC Public Health. 2025;25:1711. doi:10.1186/s12889-025-22689-1
25. Kovács RE, Alpay M, Karsai I, Tornóczky GJ, Petróczi A, Boros S. Balancing Performance and Health in Elite Hungarian Athletes: The Relationship Among Disordered Eating Risk, Body Composition, and Nutrition Knowledge. Nutrients. 2025;17(2):231. doi:10.3390/ nu17020231
26. Esteve-Ibáñez H, Drehmer E, da Silva VS, Souza I, Silva DAS, Vieira F. Relationship of Body Composition and Somatotype with Physical Activity Level and Nutrition Knowledge in Elite and Non-Elite Orienteering Athletes. Nutrients. 2025;17(4):714. doi:10.3390/ nu17040714
27. Baranauskas M, Kupčiūnaitė I, Lieponienė J, Stukas R. Dominant Somatotype Development in Relation to Body Composition and Dietary Macronutrient Intake among High-Performance Athletes in Water, Cycling and Combat Sports. Nutrients. 2024;16(10):1493. doi:10.3390/nu16101493
28. Fahrenholtz IL, Melin AK, Garthe I, et al. Effects of a 16-Week Digital Intervention on Sports Nutrition Knowledge and Behavior in Female Endurance Athletes with Risk of Relative Energy Deficiency in Sport (REDs). Nutrients. 2023;15(5):1082. doi:10.3390/nu15051082
29. Tektunalı Akman C, Gönen Aydın C, Ersoy G. The effect of nutrition education sessions on energy availability, body composition, eating attitude and sports nutrition knowledge in young female endurance athletes. Front Public Health. 2024;12:1289448. doi:10.3389/ fpubh.2024.1289448
30. Duralı Ö, Duran S. A Comprehensive Study on Determination of Nutrition Knowledge and Nutrition Status in Adult Women. Cyprus J Med Sci. 2023;8(6):441-448. doi:10.4274/cjms.2021.3409

Details

Primary Language

English

Subjects

Nutritional Science, Public Health Nutrition, Sport and Exercise Nutrition

Journal Section

Research Article

Authors

Gizem Elvan Hacıoğlu
0009-0009-7828-0085
Türkiye

Mutlu Tuçe Ülker
0000-0002-1757-5084
Türkiye

Bilge Tekin Elkaan ^*
0000-0002-0682-169X
Türkiye

Elif Nur Özen
0009-0006-0366-5552
Türkiye

Publication Date

February 20, 2026

Submission Date

October 24, 2025

Acceptance Date

November 29, 2025

Published in Issue

Year 2026 Volume: 17 Number: January, February, March 2026

DOI

https://doi.org/10.31067/acusaglik.1809570

IZ

https://izlik.org/JA73SM54TE

Cite

RIS / Bibtex

APA

Hacıoğlu, G. E., Ülker, M. T., Tekin Elkaan, B., & Özen, E. N. (2026). Assessment of Nutrition Knowledge and Its Association with Body Composition in Adults. Acıbadem Üniversitesi Sağlık Bilimleri Dergisi, 17(January, February, March 2026). https://doi.org/10.31067/acusaglik.1809570

AMA

1.Hacıoğlu GE, Ülker MT, Tekin Elkaan B, Özen EN. Assessment of Nutrition Knowledge and Its Association with Body Composition in Adults. Acibadem Univ Saglik Bilim Derg. 2026;17(January, February, March 2026). doi:10.31067/acusaglik.1809570

Chicago

Hacıoğlu, Gizem Elvan, Mutlu Tuçe Ülker, Bilge Tekin Elkaan, and Elif Nur Özen. 2026. “Assessment of Nutrition Knowledge and Its Association With Body Composition in Adults”. Acıbadem Üniversitesi Sağlık Bilimleri Dergisi 17 (January, February, March 2026). https://doi.org/10.31067/acusaglik.1809570.

EndNote

Hacıoğlu GE, Ülker MT, Tekin Elkaan B, Özen EN (February 1, 2026) Assessment of Nutrition Knowledge and Its Association with Body Composition in Adults. Acıbadem Üniversitesi Sağlık Bilimleri Dergisi 17 January, February, March 2026

IEEE

[1]G. E. Hacıoğlu, M. T. Ülker, B. Tekin Elkaan, and E. N. Özen, “Assessment of Nutrition Knowledge and Its Association with Body Composition in Adults”, Acibadem Univ Saglik Bilim Derg, vol. 17, no. January, February, March 2026, Feb. 2026, doi: 10.31067/acusaglik.1809570.

ISNAD

Hacıoğlu, Gizem Elvan - Ülker, Mutlu Tuçe - Tekin Elkaan, Bilge - Özen, Elif Nur. “Assessment of Nutrition Knowledge and Its Association With Body Composition in Adults”. Acıbadem Üniversitesi Sağlık Bilimleri Dergisi 17/January, February, March 2026 (February 1, 2026). https://doi.org/10.31067/acusaglik.1809570.

JAMA

1.Hacıoğlu GE, Ülker MT, Tekin Elkaan B, Özen EN. Assessment of Nutrition Knowledge and Its Association with Body Composition in Adults. Acibadem Univ Saglik Bilim Derg. 2026;17. doi:10.31067/acusaglik.1809570.

MLA

Hacıoğlu, Gizem Elvan, et al. “Assessment of Nutrition Knowledge and Its Association With Body Composition in Adults”. Acıbadem Üniversitesi Sağlık Bilimleri Dergisi, vol. 17, no. January, February, March 2026, Feb. 2026, doi:10.31067/acusaglik.1809570.

Vancouver

1.Gizem Elvan Hacıoğlu, Mutlu Tuçe Ülker, Bilge Tekin Elkaan, Elif Nur Özen. Assessment of Nutrition Knowledge and Its Association with Body Composition in Adults. Acibadem Univ Saglik Bilim Derg. 2026 Feb. 1;17(January, February, March 2026). doi:10.31067/acusaglik.1809570