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All Journal SURABAYA PHYSICAL MEDICINE AND REHABILITATION JOURNAL The Indonesian Journal of Community and Occupational Medicine
Dewi Friska
Department of Community Medicine, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
Chemical Engineering, Chemistry & Bioengineering Health Professions Medicine & Pharmacology

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Comparison of Fatigue Dimensions between Warehouse Staff and Heavy Equipment Technicians in The Mining Sector Mohammad Ikram Bahari; Dewi Friska; Dewi Yunia Fitriani; Ahmad Fuady; Nuri Purwito Adi
The Indonesian Journal of Community and Occupational Medicine Vol. 5 No. 2 (2025): ijcom
Publisher : ILUNI MKK FKUI and PRODI MKK FKUI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53773/ijcom.v5i2.174.49-55

Abstract

Background: Work-related fatigue is a multidimensional condition that can reduce productivity and increase the risk of workplace accidents, particularly in professions with high physical and mental demands such as heavy equipment technicians and warehouse workers in the mining sector. Both professions work under shift systems and high workloads; however, studies comparing the dimensions of fatigue between the two remain limited.Objective: To determine the proportion of fatigue levels and compare fatigue dimensions between warehouse workers and heavy equipment technicians.Methods: A descriptive-comparative cross-sectional study was conducted on 132 male workers (100 heavy equipment technicians and 32 warehouse workers) at a mining company in South Kalimantan, Indonesia. Demographic and job-related characteristics were collected. Fatigue was measured using the Swedish Occupational Fatigue Inventory (SOFI) in Indonesian, which has been validated, covering five dimensions: energy deficiency, physical exertion, physical discomfort, sleepiness, and lack of motivation. Descriptive and comparative statistical analyses were conducted.Results: Mild fatigue (among technicians and warehouse staff were 90% and 93.8% ). Moderate fatigue was experienced by 10% of technicians and 6.3% of warehouse staff. No participants experienced severe fatigue. Among heavy equipment technicians, the highest dimension was physical exertion, while the highest dimension of fatigue among warehouse staff was lack of energy. Work factors, age, work experience, and nutritional status were not significantly associated with fatigue levels.Conclusion: Mild fatigue dominates in both work groups, as this company is a supporting company for a mining company, there have never been any near misses or incidents, and has an appropriate management. For the overall fatigue dimension, heavy equipment technicians scored higher than warehouse staff. However, fatigue checks should still be carried out regularly among workers.
Comparison Between Back Exercise and Yoga on Pain Intensity, Trunk Muscle Strength, and Functional Disability (Intervention Studies in Obesity with Chronic Mechanical Low Back Pain) Winny; Tirza Z. Tamin; Dewi Friska
Surabaya Physical Medicine and Rehabilitation Journal Vol. 8 No. 2 (2026): SPMRJ, AUGUST 2026
Publisher : Faculty of Medicine, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/spmrj.v8i2.88169

Abstract

Background: Obesity is an important risk factor for chronic mechanical low back pain (LBP) due to altered spinal biomechanics and reduced core stability. Exercise therapy such as back exercise and yoga is commonly used; however, comparative evidence in overweight and obese patients is limited. Aim(s): To compare the effectiveness of back exercise and yoga on pain intensity, trunk muscle strength, and functional disability in overweight and obese patients with chronic mechanical LBP. Materials and Methods: A randomized controlled trial was conducted involving overweight and obese patients with chronic mechanical LBP. Subjects were divided into back exercise and yoga groups. Both groups received standard aerobic exercise using an ergocycle, twice weekly for six weeks. The back exercise group performed structured back exercises, while the yoga group attended 45-minute yoga sessions twice weekly for six weeks. Outcomes included pain intensity (Visual Analogue Scale), trunk muscle strength (handheld dynamometer), and functional disability (Oswestry Disability Index). Results: After six weeks, no significant differences were found between groups. Reductions in pain intensity, increases in trunk muscle strength, and improvements in functional disability were comparable between the back exercise and yoga groups (p > 0.05). Conclusions: Back exercise and yoga have similar effectiveness in reducing pain, improving trunk muscle strength, and decreasing functional disability in overweight and obese patients with chronic mechanical low back pain.
Co-Authors Ahmad Fuady Dewi Yunia Fitriani Mohammad Ikram Bahari Nuri Purwito Adi Tirza Z. Tamin Winny