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Ja Hyun Kim 6 Articles
Erratum to: The relationship between quality of sleep and night shift rotation interval
Jae Youn Kim, Chang Ho Chae, Young Ouk Kim, Jun Seok Son, Ja Hyun Kim, Chan Woo Kim, Hyoung Ouk Park, Jun Ho Lee, Soon Kwon
Ann Occup Environ Med 2016;28:6.   Published online January 25, 2016
DOI: https://doi.org/10.1186/s40557-016-0090-7
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Association between serum vitamin D and depressive symptoms among female workers in the manufacturing industry
Soon Il Kwon, Jun Seok Son, Young Ouk Kim, Chang Ho Chae, Ja Hyun Kim, Chan Woo Kim, Hyoung Ouk Park, Jun Ho Lee, Jun Ick Jung
Ann Occup Environ Med 2015;27:28.   Published online December 12, 2015
DOI: https://doi.org/10.1186/s40557-015-0083-y
AbstractAbstract PDFPubReaderePub
Background

Vitamin D has been known to maintain the body’s balance of calcium and phosphorus as well as skeletal health. There has been increasing emphasis on the importance of vitamin D as recent studies have been reporting the specific functions of vitamin D in the cerebral nervous system and the association between the level of serum vitamin D and depressive symptoms. However, there is currently a paucity of research investigating the association between serum vitamin D and depressive symptoms in Korean subjects. Consequently, this study has aimed to determine the level of serum vitamin D and explore the association between serum vitamin D and depressive symptoms in Korean female workers.

Method

A medical examination, questionnaire, anthropometric measurements, and a blood test were conducted between February 3 and March 7, 2014 in 1054 subjects among female workers in the manufacturing industry who underwent physical examinations in a university hospital. From this data, we identified the level of serum vitamin D and investigated the association between serum vitamin D deficiency and depressive symptoms.

Results

The average serum vitamin D level of the 1054 subjects was 9.07 ± 3.25 ng/mL, and the number of subjects in the serum vitamin D deficiency group with less than 10 ng/mL was 721 (68.4 %). The odds ratio of the depressive symptom group with a CES-D score of 16 or above being in the deficiency group with a serum vitamin D level less than 10 ng/mL was found to be 1.55 (95 % CI = 1.15–2.07).

Conclusion

68.4 % of female workers in the manufacturing industry were in the deficiency group with serum vitamin D levels less than 10 ng/mL. Additionally, we identified an association between serum vitamin D deficiency and depressive symptoms. In the future, if serum vitamin D deficiency is checked regularly in workers, we expect to achieve better outcomes in managing their depressive symptoms.


Citations

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  • Vitamin D and Metabolic Syndrome in Working Age Subjects from an Obesity Clinic
    Luisella Vigna, Michela Carola Speciani, Amedea Silvia Tirelli, Francesca Bravi, Carlo La Vecchia, Caterina Conte, Francesca Gori
    Nutrients.2023; 15(20): 4354.     CrossRef
  • Vitamin D status and COVID-19 prevention in a worker subgroup in Italy
    Francesca Ubaldi, Enrico Montanari, Lory Marika Margarucci, Claudio Caprara, Gianluca Gianfranceschi, Elena Scaramucci, Antonio Piccolella, Federica Valeriani, Vincenzo Romano Spica
    Work.2023; 75(2): 391.     CrossRef
  • Shift Work and Serum Vitamin D Levels: A Systematic Review and Meta-Analysis
    Margherita Martelli, Gianmaria Salvio, Lory Santarelli, Massimo Bracci
    International Journal of Environmental Research and Public Health.2022; 19(15): 8919.     CrossRef
  • Prevalence of depression disorder in industrial workers: a meta-analysis
    Sohrab Amiri
    International Journal of Occupational Safety and Ergonomics.2022; 28(3): 1624.     CrossRef
  • Prevalence of current and former smoking in industrial workers worldwide: a systematic review and meta-analysis
    Sohrab Amiri, Seyed Morteza Hosseini
    Journal of Addictive Diseases.2021; 39(3): 288.     CrossRef
  • Effects of vitamin D on mood and sleep in the healthy population: Interpretations from the serotonergic pathway
    Laura M. Huiberts, Karin C.H.J. Smolders
    Sleep Medicine Reviews.2021; 55: 101379.     CrossRef
  • Vitamin D levels and deficiency with different occupations: a systematic review
    Daniel Sowah, Xiangning Fan, Liz Dennett, Reidar Hagtvedt, Sebastian Straube
    BMC Public Health.2017;[Epub]     CrossRef
  • Long working hours, job satisfaction, and depressive symptoms: a community-based cross-sectional study among Japanese employees in small- and medium-scale businesses
    Akinori Nakata
    Oncotarget.2017; 8(32): 53041.     CrossRef
  • Depressive Symptom and Related Factors: A Cross-Sectional Study of Korean Female Workers Working at Traditional Markets
    Won Ju Hwang, Jin Ah Kim, Sally H. Rankin
    International Journal of Environmental Research and Public Health.2017; 14(12): 1465.     CrossRef
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The relationship between quality of sleep and night shift rotation interval
Jae Youn Kim, Chang Ho Chae, Young Ouk Kim, Jun Seok Son, Ja Hyun Kim, Chan Woo Kim, Hyoung Ouk Park, Jun Ho Lee, Sun Il Kwon
Ann Occup Environ Med 2015;27:31.   Published online December 17, 2015
DOI: https://doi.org/10.1186/s40557-015-0084-x
AbstractAbstract PDFPubReaderePub
Background

Shift work is closely related with workers' health. In particular, sleep is thought to be affected by shift work. In addition, shift work has been reported to be associated with the type or direction of shift rotation, number of consecutive night shifts, and number of off-duty days. We aimed to analyze the association between the night shift rotation interval and the quality of sleep reported by Korean female shift workers.

Methods

In total, 2,818 female shift workers from the manufacturing industry who received an employee physical examination at a single university hospital from January to August in 2014 were included. Subjects were classified into three groups (A, B, and C) by their night shift rotation interval. The quality of sleep was measured using the Korean version of the Pittsburgh Sleep Quality Index (PSQI). Descriptive analysis, univariate logistic regression, and multivariate logistic regression were performed.

Results

With group A as the reference, the odds ratio (OR) for having a seriously low quality of sleep was 1.456 (95% CI 1.171–1.811) and 2.348 (95% CI 1.852–2.977) for groups B and C, respectively. Thus, group C with the shortest night shift rotation interval was most likely to have a low quality of sleep. After adjustment for age, obesity, smoking status, alcohol consumption, exercise, being allowed to sleep during night shifts, work experience, and shift work experience, groups B and C had ORs of 1.419 (95% CI 1.134–1.777) and 2.238 (95% CI 1.737–2.882), respectively, compared to group A.

Conclusion

Our data suggest that a shorter night shift rotation interval does not provide enough recovery time to adjust the circadian rhythm, resulting in a low quality of sleep. Because shift work is influenced by many different factors, future studies should aim to determine the most optimal shift work model and collect accurate, prospective data.


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  • The Correlation Between Lighting Intensity, Eye Fatigue, Occupational Stress, and Sleep Quality in the Control Room Operators of Abadan Refinery
    Nasrin Asadi, Salman Torabi Gudarzi, Seyedeh Sahar Hosseini, Zahra Hashemi, Rozita Foladi Dehaghi
    Shiraz E-Medical Journal.2024;[Epub]     CrossRef
  • Night Shift Work and Sleep Disturbances in Women
    Suleima P. Vasconcelos, Lucia C. Lemos, Claudia R.C. Moreno
    Sleep Medicine Clinics.2023; 18(4): 533.     CrossRef
  • Circadian secretion rhythm of GLP-1 and its influencing factors
    Chuanfeng Liu, Yuzhao Liu, Yu Xin, Yangang Wang
    Frontiers in Endocrinology.2022;[Epub]     CrossRef
  • Which Shiftwork Pattern Is the Strongest Predictor for Poor Sleep Quality in Nurses?
    Kampanat Wangsan, Naesinee Chaiear, Kittisak Sawanyawisuth, Piyanee Klainin-Yobas, Kanjana Simajareuk, Watchara Boonsawat
    International Journal of Environmental Research and Public Health.2022; 19(21): 13986.     CrossRef
  • Poor Sleep Quality in Nurses Working or Having Worked Night Shifts: A Cross-Sectional Study
    Qiao Huang, Chong Tian, Xian-Tao Zeng
    Frontiers in Neuroscience.2021;[Epub]     CrossRef
  • Sleep and Association With Cardiovascular Risk Among Midwestern US Firefighters
    Juan Luis Romero Cabrera, Mercedes Sotos-Prieto, Antonio García Ríos, Steven Moffatt, Costas A. Christophi, Pablo Pérez-Martínez, Stefanos N. Kales
    Frontiers in Endocrinology.2021;[Epub]     CrossRef
  • Association of Work Stress Level with Sleep Quality in Nurses and Medical Social Workers at a Tertiary Care Hospital of Wardha District
    Vikram Singh, Pramita Muntode, Sonal Singh, Rutuj Waghmare, Sumit Kishore, Shobha Joshi, Rahul Thakur
    Journal of Evolution of Medical and Dental Sciences.2021; 10(28): 2061.     CrossRef
  • The analysis of sleep quality of social studies vocational associate degree students and the factors that affect sleep quality
    Osman KURT, Refika DURNA, Ali Sırrı YILMAZ
    Adıyaman Üniversitesi Sağlık Bilimleri Dergisi.2021; 7(3): 223.     CrossRef
  • Investigation of Sleep Quality of Nurses and Its Relationship with Musculoskeletal Disorder Prevalence and Job Stress
    Behnam Moradi, Samira Barakat
    Journal of Occupational Hygiene Engineering.2021; 8(1): 26.     CrossRef
  • Morning and evening salivary melatonin, sleepiness and chronotype: A comparative study of nurses on fixed day and rotating night shifts
    Wegdan Bani Issa, Hanif Abdul Rahman, Najila Albluwi, A. B. Rani Samsudin, Suma Abraham, Roba Saqan, Lin Naing
    Journal of Advanced Nursing.2020; 76(12): 3372.     CrossRef
  • Nurses and Night Shifts: Poor Sleep Quality Exacerbates Psychomotor Performance
    Marco Di Muzio, Giulia Diella, Emanuele Di Simone, Luana Novelli, Valentina Alfonsi, Serena Scarpelli, Ludovica Annarumma, Federico Salfi, Mariella Pazzaglia, Anna Maria Giannini, Luigi De Gennaro
    Frontiers in Neuroscience.2020;[Epub]     CrossRef
  • An Approach to Addressing Trainee Burnout: Revising Fellow Shift Scheduling in the Intensive Care Unit
    Namita Jayaprakash, Craig E. Daniels, Courtney E. Bennett, Kianoush Kashani
    Journal of Translational Critical Care Medicine.2019; 1(3): 103.     CrossRef
  • The association between shift work-related sleep complaints and shift work intolerance
    Hyuk Joo Lee, Kyung-Lak Son, Young Rong Bang, Hong Joon Jeon, Kiheon Lee, In-Young Yoon
    Sleep and Biological Rhythms.2019; 17(1): 3.     CrossRef
  • Work, sleep, and cholesterol levels of U.S. long-haul truck drivers
    Michael K. LEMKE, Yorghos APOSTOLOPOULOS, Adam HEGE, Laurie WIDEMAN, Sevil SÖNMEZ
    INDUSTRIAL HEALTH.2017; 55(2): 149.     CrossRef
  • Work organization, sleep and metabolic syndrome among long-haul truck drivers
    M. K. Lemke, Y. Apostolopoulos, A. Hege, L. Wideman, S. Sönmez
    Occupational Medicine.2017; 67(4): 274.     CrossRef
  • Erratum to: The relationship between quality of sleep and night shift rotation interval
    Jae Youn Kim, Chang Ho Chae, Young Ouk Kim, Jun Seok Son, Ja Hyun Kim, Chan Woo Kim, Hyoung Ouk Park, Jun Ho Lee, Soon Il Kwon
    Annals of Occupational and Environmental Medicine.2016;[Epub]     CrossRef
  • Influence of night duty on endoscopic therapy for bile duct stones
    Mitsuru Sugimoto, Tadayuki Takagi, Rei Suzuki, Naoki Konno, Hiroyuki Asama, Ko Watanabe, Jun Nakamura, Hitomi Kikuchi, Yuichi Waragai, Mika Takasumi, Takuto Hikichi, Hiromasa Ohira
    World Journal of Gastroenterology.2016; 22(42): 9387.     CrossRef
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The Relationship of Serum Vitamin D Levels and the Framingham Risk Score among Male Workers in the Manufacturing Sector
Seung Hyun Park, Young Wook Kim, Chang Ho Chae, Jun Seok Son, Chan Woo Kim, Jae Youn Kim, Ja Hyun Kim
Korean Journal of Occupational and Environmental Medicine 2012;24(2):115-123.   Published online June 30, 2012
DOI: https://doi.org/10.35371/kjoem.2012.24.2.115
AbstractAbstract PDF
OBJECTIVES
A growing body of evidence states that vitamin D deficiencies may adversely affect cardiovascular disease, however data from Korean workers are lacking. The purpose of this study was to investigate the vitamin D level of the Korean worker and the relationship between vitamin D levels and the Framingham Risk Score.
METHODS
11,448 male workers who visited a university hospital for health screening between March 2010 and August 2011, were enrolled in the study. We measured their of serum vitamin D(25(OH)D) levels and calculated their Framingham Risk Score.
RESULTS
The mean serum vitamin D(25(OH)D) level of the surveyed workers was 13.03+/-6.47 ng/mL. 12.4% of the total workers had adequate vitamin D levels. It was found that the lower the vitamin D level, the higher the risk of cardiovascular disease. The Framingham Risk Score and vitamin D levels were found to be significantly related (OR=1.39, 95% CI 1.14~1.68) through a multivariate logistic regression analysis.
CONCLUSIONS
87.6% of workers possessed inappropriate vitamin D levels. Management for this high risk group in regards to cardiovascular disease should be included in the evaluation and vitamin D levels should be corrected.

Citations

Citations to this article as recorded by  
  • Association of among alcohol consumption and blood vitamin D and lead concentrations: Based on 2010-2012 Korea national health and nutrition examination survey
    Ho-Ki An, Jae-Yong Park, Hee-Jung Yoon
    Journal of the Korea Academia-Industrial cooperation Society.2015; 16(1): 498.     CrossRef
  • Vitamin D status and associated occupational factors in Korean wage workers: data from the 5th Korea national health and nutrition examination survey (KNHANES 2010–2012)
    Harin Jeong, Sujin Hong, Yunjeong Heo, Hosun Chun, Daeseong Kim, Jongtae Park, Mo-yeol Kang
    Annals of Occupational and Environmental Medicine.2014;[Epub]     CrossRef
  • Correlation between vitamin D and cardiovascular disease predictors in overweight and obese Koreans
    Misung Kim, Woori Na, Cheongmin Sohn
    Journal of Clinical Biochemistry and Nutrition.2013; : 167.     CrossRef
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Association between Job Stress and Alexithymic Traits
Seong Jin Ryu, Ja Hyun Kim, Soon Woo Jang, Hyung Joon Jhun, Byoung Gwon Kim, Jong Tae Park
Korean Journal of Occupational and Environmental Medicine 2008;20(4):295-301.   Published online December 31, 2008
DOI: https://doi.org/10.35371/kjoem.2008.20.4.295
AbstractAbstract PDF
OBJECTIVES
We evaluated the association between job stress and alexithymic traits in Korean workers.
METHODS
Workers (n=521) who visited two university hospitals for medical check-ups were recruited for this study. Job stress was evaluated using the Korean version of Karasek's Job Content Questionnaire (JCQ), and alexithymic traits were assessed using the Korean version of the Toronto Alexithymia Scale (TAS-20K). Crude and adjusted odds ratios (ORs) of job stress scales (job strain, job insecurity, and job dissatisfaction) with alexithymic traits(total TAS score > or =52) were calculated.
RESULTS
High job strain compared with low strain had a high, but insignificant association with alexithymic traits (adjusted OR, 2.26; 95% CI, 0.93-5.44). High job insecurity (adjusted OR, 2.26; 95% CI, 1.21-4.22), and high job dissatisfaction (adjusted OR, 1.99; 95% CI, 1.06-3.74) had significant associations with alexithymic traits.
CONCLUSIONS
This study suggests that job stress is associated with alexithymic traits in workers.

Citations

Citations to this article as recorded by  
  • Retraction Notice to: "Association between Job Stress and Alexithymic Traits" [Korean J Occup Environ Med 20(4) (2008) 295-301] and "Estimated Number of Korean Workers with Back Pain and Population-based Associated Factors of Back Pain: Data from the Four

    Korean Journal of Occupational and Environmental Medicine.2011; 23(3): 350.     CrossRef
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A Case of Trichloroethylene Intoxication with Neuropsychiatric Symptoms
Ja Hyun Kim, Seong Jin Ryu, Byoung Gwon Kim, Hyung Joon Jhun, Jong Tae Park, Hae Joon Kim
Korean Journal of Occupational and Environmental Medicine 2008;20(1):54-61.   Published online March 31, 2008
DOI: https://doi.org/10.35371/kjoem.2008.20.1.54
AbstractAbstract PDF
BACKGROUND
Trichloroethylene (TCE) has been widely used as a typewriter correction fluid, paint remover, adhesive, spot removers and, particularly, as a degreasing agent in metal-fabricating operation. However, few studies have reported on the effects of TCE intoxication, in spite of numerous occupational accidents arising from TCE intoxication, even until quite recently used in small companies. TCE affects mainly the central nervous system (CNS) and is carcinogenic, even when carefully used and managed.
CASE
REPORT: A 48-year-old male worker visited our hospital complaining of decreased motivation and general weakness. In history taking, the patient had suffered insomnia, memory disturbance, stuttering, loss of interest and sexual desire, depressive mood for 4 years, dysesthesia with tingling sensation and pain in both extremities, and a nauseas feeling similar to a hangover which had been aggravated for 4 months before admission. The patient had been engaged in metal degreasing with TCE for 8 years. Electromyography indicated disturbance of autonomic function, but there was neither peripheral neuropathy nor cervical radiculopathy. Organic abnormalities including cerebellar atrophy and CNS infection were ruled out, while there was no indication of malignancy in magnetic resonance imaging (MRI) and metabolic disorders and electrolyte imbalances in laboratory test. The authors performed biological monitoring for the possible exposed chemicals. Urinary 2,5-hexanedione, a metabolite of n-hexane, was undetected but 3,331.1 mg/g creatinine of urinary trichloro-compounds, a metabolite of TCE, was detected. The patient was diagnosed as TCE intoxication due to a level of urinary trichloro-compounds in excess of the normal range (300 mg/g creatinine), in addition to an occupational history and clinical symptoms. TCE exposure was stopped in admission and the neuropsychiatric symptoms of the patient were improved as the urinary trichloro-compounds were decreased from 3,331.1 mg/g creatinine to 64.6 mg/g creatinine in 5 days.
CONCLUSION
Low-dose, chronic TCE intoxication shows neuropsychiatric symptoms, which are often misrecognized merely as a psychiatric disorder; its appropriate diagnosis, early treatment and exposure assessment are therefore difficult. The neuropsychiatric symptoms in workers who have been exposed to TCE should be monitored, detailed job history should be taken and biological monitoring should be conducted to gain early insight of chronic TCE exposure.

Citations

Citations to this article as recorded by  
  • Occupational Psychiatric Disorders in Korea
    Kyeong-Sook Choi, Seong-Kyu Kang
    Journal of Korean Medical Science.2010; 25(Suppl): S87.     CrossRef
  • Occupational Neurologic Disorders in Korea
    Yangho Kim, Kyoung Sook Jeong, Yong-Hun Yun, Myoung-Soon Oh
    Journal of Clinical Neurology.2010; 6(2): 64.     CrossRef
  • Occupational Neurological Disorders in Korea
    Eun-A Kim, Seong-Kyu Kang
    Journal of Korean Medical Science.2010; 25(Suppl): S26.     CrossRef
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