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All Journal International Journal of Public Health Science (IJPHS) Jurnal Manajemen dan Bisnis Sriwijaya Management Analysis Journal Syntax Literate: Jurnal Ilmiah Indonesia AFEBI Economic and Finance Review JMBI UNSRAT (Jurnal Ilmiah Manajemen Bisnis dan Inovasi Universitas Sam Ratulangi) JURNAL AKUNTANSI, MANAJEMEN DAN EKONOMI Jurnal Scientia Narra J Dynamic Management Journal Journal of Economic, Business & Accounting Research Jurnal Manajemen dan Usahawan Indonesia
Rizkianto, Eko
Departement Of Management, Faculty Of Economics And Business, University Of Indonesia, Indonesia
Humanities Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Environmental Science Health Professions Immunology & microbiology Law, Crime, Criminology & Criminal Justice Mathematics Medicine & Pharmacology Public Health Social Sciences Other

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Analysis of risk factors associated with subjective fatigue symptoms among coal mining vehicle operators Modjo, Robiana; Sulistiyorini, Desy; Rizkianto, Eko; Susilowati, Indri Hapsari; Triwibowo, Didik
International Journal of Public Health Science (IJPHS) Vol 14, No 4: December 2025
Publisher : Intelektual Pustaka Media Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijphs.v14i4.26601

Abstract

Coal mining vehicle operators have negative consequences with health effects such as fatigue. The aim of the study was to analyze the risk factors related to subjective fatigue among coal mining operators. Specifically, it seeks to examine the relationship between work shift, working period, sleep quantity, sleep quality, and personal characteristics, such as age, neck circumference, and body mass index. Data were collected from a coal mining site in South Kalimantan, Indonesia in 2022 with primary questionnaires. A total of 440 workers who worked in the mining and hauling area for at least one year were recruited in this study. This was a cross-sectional study. Quantitative data were obtained to describe the level of subjective fatigue and to analyze the risk factors associated with the work fatigue in coal mining vehicle operators. The fatigue was associated with obesity (OR:1.777, 95% CI:1.0067-2.960), overweight (OR:1.783, 95% CI:1.046-3.040), neck circumference (OR:1.513, 95% CI:1.0983-2.329), sleep quality (OR:4.597, 95% CI:2.762-7.650), and working period (OR:0.545, 95% CI:10.360-0.825) (p<0.05 for all). However, fatigue did not significantly affect from sleep quantity and work shift. Ensuring individual health is essential for preserving the opportunity to sleep and allowing the body to recover from fatigue.
Effects of intermittent fasting (time-restricted eating) for 30 days on body weight, visceral fat, and muscle mass in adult workers Ketus A. Prasetyo; Robiana Modjo; Eko Rizkianto; Desy Sulistiyorini
Narra J Vol. 6 No. 3 (2026): December 2026 (In Press)
Publisher : Narra Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52225/narra.v6i3.3120

Abstract

Obesity among workers is an important occupational health concern because of its association with cardiometabolic risk and productivity loss. Time-restricted eating (TRE) 12:12 is a mild intermittent fasting protocol that limits food intake to a 12-hour eating window and may be feasible for workplace implementation. This study aimed to evaluate the effect of a 30-day TRE 12:12 intervention on body weight and body composition among adult workers. A quasi-experimental one-group pretest–posttest study was conducted among adult workers in Semarang, Indonesia. Participants followed TRE 12:12 for 30 days without prescribed calorie restriction. Body composition was assessed before and after the intervention using bioelectrical impedance analysis. Changes in outcomes were analyzed using paired-samples t-test and Cohen’s d, while adherence and participants’ perceptions were summarized descriptively. After 30 days, body weight decreased by 2.38±1.97 kg, body mass index (BMI) by 0.90±0.70 kg/m², body fat by 1.08±1.23%, visceral fat level by 1.12±0.72, and waist circumference by 5.82±3.37 cm, with all changes statistically significant (p≤0.001). Skeletal muscle mass increased slightly by 0.36±0.55% (p=0.008), which was interpreted as muscle preservation rather than meaningful muscle gain. Overall adherence was high (98.1%), reported side effects were mild, and most participants perceived the intervention as beneficial. This study highlights that TRE 12:12 was associated with short-term improvements in body weight and body composition among adult workers, particularly reductions in visceral fat and waist circumference, while preserving skeletal muscle mass. Further studies with larger samples and longer follow-up are needed to confirm its effectiveness and sustainability in working populations.
Co-Authors Arga, Junior Aulia Arief Anwar Hidayat Ayu Shafira Rachmani Bayu Hidayat Danisha, Ananda Tiara Desy Sulistiyorini Desy Sulistiyorini Didik Triwibowo Galis Kurnia Afdhila Hendro Prabowo Indri Hapsari Susilowati Ketus A. Prasetyo Maria Yvette Duhita Nia Rosmiati Pandu Berkatindo MLA Putri Metta Suryani Rahmita, Vani Renatha, Gina Robiana Modjo Salsabila, Ghina Sarpi, Sarpi Sitanggang, Okta Martua Syaifuddin, Nabilah Tanukusuma, Reinard Tjut Naridha Selsa Wicaksono, Ignatius Geraldo