Influence of Energy Intake and Nutritional Status on Work Productivity Among Construction Workers: A Case Study of the Merdeka Square Revitalization Project, Medan

Mila Zahara; Rani Suraya; Nadya Ulfa Tanjung

doi:10.56741/hesmed.v4i02.1010

Authors

Mila Zahara
milazaharaaa@gmail.com
Universitas Islam Negeri Sumatera Utara
Rani Suraya Universitas Islam Negeri Sumatera Utara
Nadya Ulfa Tanjung Universitas Islam Negeri Sumatera Utara

DOI:

https://doi.org/10.56741/hesmed.v4i02.1010

Keywords:

Energy Intake, Nutritional Status, Work Productivity, Construction Workers, Occupational Health, Cross-Sectional Study

Abstract

Workers involved in revitalization projects are vulnerable to reduced productivity due to physically demanding tasks, time constraints, and challenging environmental conditions such as heat, noise, and long hours. These factors can lead to fatigue, stress, metabolic disorders, and poor nutritional intake, which in turn reduce endurance and focus. This study examines the influence of energy intake and nutritional status on work productivity among workers at the Merdeka Square Revitalization Project in Medan City. A quantitative cross-sectional design was used, involving 77 respondents. Data were analyzed using univariate, bivariate, and multivariate logistic regression tests. After controlling for confounders, both energy intake and nutritional status significantly affected work productivity (p < 0.05). Although excess energy intake was not statistically significant (Exp(B) = 1.319; 95% CI: 0.375–4.642), it still posed a 1.3 times greater risk of reduced productivity compared to adequate intake. In contrast, insufficient energy intake was significant (p = 0.030; Exp(B) = 5.375), with a 5.4 times greater risk of lower productivity. Nutritional status, both overnutrition (p = 0.009; Exp(B) = 10.039) and undernutrition (p = 0.002; Exp(B) = 14.898), significantly affected productivity. The Nagelkerke R² value of 0.354 indicates that these variables explain 35.4% of the variance in work productivity.

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Author Biographies

Mila Zahara, Universitas Islam Negeri Sumatera Utara

Mila Zahara is an undergraduate student at the Faculty of Public Health, State Islamic University of North Sumatra (UINSU), majoring in Occupational Safety and Health (OSH). Her academic interests include occupational accident prevention, the promotion of safe workplace behavior, and the practical application of OSH principles in daily life. (Email: milazaharaaa@gmail.com).

Rani Suraya, Universitas Islam Negeri Sumatera Utara

Rani Suraya is a lecturer at the Faculty of Public Health, State Islamic University of North Sumatra (UINSU), Medan, specializing in Public Health Nutrition. She earned both her Bachelor’s and Master’s degrees in Public Health from the Faculty of Public Health, University of North Sumatra (USU). Her academic background and teaching experience have shaped her research focus on nutrition and public health. (Email: ranisuraya@uinsu.ac.id).

Nadya Ulfa Tanjung, Universitas Islam Negeri Sumatera Utara

Nadya Ulfa Tanjung is a lecturer at the Faculty of Public Health, State Islamic University of North Sumatra (UINSU), Medan, with a specialization in Public Health Nutrition. She holds a Bachelor's degree from the University of North Sumatra (USU) and a Master's degree from Universitas Indonesia (UI), both in Public Health. Her professional interests lie in advancing research and practice in the areas of nutrition and public health. (Email: nadyaulfatanjung@uinsu.ac.id).

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