Article Per Year (5 Year)
p-Index From 2020 - 2025
0.444
P-Index
This Author published in this journals
All Journal Occupational and Environmental Medicine Journal of Indonesia Jurnal MedScientiae
Fuk, Liem Jen
Unknown Affiliation
Biochemistry, Genetics & Molecular Biology Environmental Science Health Professions Immunology & microbiology Medicine & Pharmacology Nursing Public Health

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Correlation of Plasma Melatonin Concentration and Alertness Level Among Female Nurses in Jakarta Indonesia Kresna, Andreas; Fuk, Liem Jen; Widyahening, Indah Suci; Soemarko, Dewi Sumaryani; Fitriani, Dewi Yunia
Occupational and Environmental Medicine Journal of Indonesia Vol. 1, No. 2
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Background Working in shift especially night shift could alter alertness level, increase fatigue, and working accident. One of the factors that affect the circadian rhythm were melatonin. Melatonin was a hormone that regulate the wake and sleep cycle that have an impact on alertness levels. This study was aimed to find correlation between plasma melatonin and alertness level. Methods A cross-sectional study was conducted on 40 female night shift nurses. Individual characteristics were obtained by self-administered questionnaire. Plasma melatonin concentrations and alertness level was collected twice at night time (11 pm – 00 am) and at morning (7 am − 8 am). Spearman or Pearson test was used to find correlation between melatonin concentrations and Psychomotor Vigilance Test (PVT). Results Mean age was 28.4 (±4.9) years with working experience varied from 1-16 years. Plasma melatonin concentrations among female night shift nurses were higher before working hours than after duty. Range of plasma melatonin value was 10-240 pg/ml and Alertness was in the same manner with average alertness level at night was 301.2 ± 51.6 ms and 293.2± 49.7 ms at morning. There was a weak correlation between plasma melatonin concentration and alertness level difference before and after duty (r = 0.37; p = 0.016). Conclusion There was weak correlation between plasma melatonin and alertness level in night shift workers before and after duty. To Maintain alertness level reduction and melatonin secretion, night shift workers should rest at least 30 minutes during their working hours, always keep the lights on while on duty and should not work more than one shift on the same day, and providing healthy foods.
Analysis of Factors Influencing Low Back Pain (LBP) Complaints in Convection Tailors Pademangan North Winata, Susanty Dewi; Fuk, Liem Jen; Sutanti, Yosephin Sri; Lau, Denice
Jurnal MedScientiae Vol. 4 No. 2 (2025): Agustus
Publisher : Universitas Kristen Krida Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36452/jmedscientiae.v4i2.3775

Abstract

Low back pain is a disorder of the musculoskeletal system caused by ergonomic exposure, including improper work posture, sitting too long, and excessive activity. Purpose: This study aims to examine the relationship between work posture, age, length of service, gender, body mass index, last level of education, and smoking habits with LBP complaints in garment sewing workers in the Pademangan area, North Jakarta, in 2024. The research design used in this study was cross-sectional and took place in November 2024. Individual characteristics, job information, and LBP complaints were obtained from the Nordic Questionnaire about lower back problems, while the respondents' work postures were obtained using RULA (Rapid Upper Extremity Assessment). Data were analyzed using the Chi-Square test method. A total of 44 respondents (58.7%) showed unergonomic work postures based on the RULA score, and 37 respondents (49.3%) reported LBP complaints. The results of the analysis found a significant relationship between length of service and LBP complaints. Respondents with more than 5 years of work experience tend to experience LBP complaints more often than respondents with less than 5 years of work experience. Ergonomic work posture control is essential to prevent and reduce LBP complaints.
Co-Authors Dewi Sumaryani Soemarko Dewi Yunia Fitriani Indah S. Widyahening Kresna, Andreas Lau, Denice Susanty Dewi Winata Sutanti, Yosephin Sri