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Correlation of noise level exposure on the reaction time of workers at a manufacturing company in Bandung, Indonesia Herqutanto Herqutanto; Irwan Suhadi; Imron Khazim; Dewi S. Soemarko; Retno A. Werdhani
Health Science Journal of Indonesia Vol 11 No 1 (2020)
Publisher : Sekretariat Badan Penelitian dan Pengembangan Kesehatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22435/hsji.v11i1.2447

Abstract

Latar Belakang: Para pekerja sering kali terpaksa berhadapan dengan kebisingan tinggi ditempat kerja. Kebisingan mengganggu perhatian yang diperlukan terus-menerus dan menurunkan produktivitas kerja, oleh sebab itu pekerja yang melakukan pengamatan dan pengawasan terhadap satu proses produksi atau hasilnya, dapat membuat kesalahan akibat dari terganggunya konsentrasi dan kurang fokusnya perhatian. Pada penelitian ini dilakukan pengukuran waktu reaksi cahaya dan suara untuk menilai fokus perhatian/konsentrasi. Metode: Studi analitik dengan desain komparatif cross sectional. Penelitian ini dilakukan pada perusahaan manufaktur yang memproduksi benang nylon sintetik. Membandingkan rerata selisih waktu reaksi cahaya dan suara sebelum dan setelah bekerja dengan pajanan kebisingan pada kelompok subjek yang bekerja pada intensitas kebisingan di atas NAB (area braiding) dibandingkan dengan yang di bawah NAB (area waring), dimana sebelumnya dilakukan pengukuran intensitas tingkat kebisingan di kedua area tersebut. Hasil Penelitian: Perbedaan bermakna waktu reaksi cahaya yang melambat pada subjek yang bekerja dengan pajanan kebisingan di atas NAB sebelum dan setelah bekerja (p=0.007), namun tidak dengan waktu reaksi suara. Tidak terdapat perbedaan bermakna waktu reaksi cahaya dan suara pada subjek yang bekerja dengan pajanan kebisingan di bawah NAB sebelum dan setelah bekerja. Terdapat perbedaan bermakna rerata selisih waktu reaksi cahaya yang melambat pada subjek yang bekerja pada pajanan kebisingan di atas NAB dengan di bawah NAB, p=0,017, namun tidak bermakna terhadap rerata selisih waktu reaksi suara. Kesimpulan: Terdapat perbedaan rerata selisih waktu reaksi cahaya pada pekerja yang bekerja dengan pajanan kebisingan di atas NAB dibandingkan dengan pekerja yang bekerja dengan pajanan kebisingan di bawah NAB, sehingga tingkat intensitas kebisingan tinggi (di atas NAB) mempengaruhi waktu reaksi cahaya dan menjadi lebih lambat. Kata Kunci: waktu reaksi cahaya; waktu reaksi suara; kebisingan Abstract Background: Workers are often exposed to high noise level at their workplaces. Noise can disrupt the worker’s concentration and focus and in the end, may cause lower productivity. Thus, workers whose main job descriptions are to supervise workflow from one phase to another are prone to mistakes due to the loss of concentration and focus. In this research, we used reaction timer with light and sound stimuli to assess attention or concentration. Methods: The study was an analytical study with comparative cross sectional design, comparing a mean difference between light and sound reaction time before and after work. This research was conducted at a manufacturing company that produces synthetic nylon fibers. The subjects were divided into two groups; the workers with noise intensity above TLV (braiding’s area) and with noise intensity below TLV (waring’s area). Prior to the study, the research has measured the intensity of the noise level in the workplace area. Result: A significant difference was found in the light’s reaction time who work with noise exposure above TLV (p= 0.007) and it was found to be slower after work with the workers who are exposed to noise above TLV. There was also a significant mean difference for the light’s reaction time between the above TLV noise group and below TLV noise group (p = 0.017). There was no significant difference in sound reaction time. Conclusion: There was a significant mean difference in light reaction time for the workers who work with noise exposure above TLV compare with the workers who work in below TLV, so that high intensity of noise level is found to affect and decrease the light reaction time of the workers. Keywords: light’s reaction time, sound’s reaction time, noise.
Chronic Lymphocytic Leukemia In Farmer And Vegetable Seller Firly Ratsmita; Dewi S. Soemarko
The Indonesian Journal of Community and Occupational Medicine Vol. 1 No. 2 (2021): ijcom
Publisher : ILUNI MKK FKUI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (54.133 KB) | DOI: 10.53773/ijcom.v1i2.22.84-8

Abstract

Background: One of the risk factors for Chronic Lymphocytic Leukemia (CLL) is chemical exposure at work. The aim is to determine the relationship between patient who work as a farmer and vegetable seller with the incidence of CLL.Case presentation: A-69-year-old man who has been working as a vegetable seller since 15 years and a chili farmer since 4 years ago. The patient was diagnosed with CLL. In his work as a vegetable seller and chili farmer, the patient gets five hazards ranging from physical, chemical, biological, ergonomic and psychosocial hazards so it is necessary to analyze whether there is a relationship between the patient’s work and the current CLL disease.Discussion: There are seven steps needed in the enforcement of occupational diseases. In addition, additional examinations are needed to determine the biomarkers of pesticides that can cause disease. This requires control for farmers and vegetable sellers who may be exposed to pesticides found in vegetables and chilies. Conclusion: Vegetable seller and farmer have potential hazards, especially chemicals contained in pesticides which have a risk relationship with the incidence of CLL. However, to cause CLL, sufficient doses are required which are influenced by occupation, intensity of use and the type of specific chemical without the need for a long duration of exposure.