scholarly journals Quantitative Models for Prediction of Cumulative Trauma Disorders Applied to the Maquiladora Industry

Author(s):  
Melissa Airem Cázares-Manríquez ◽  
Claudia Camargo-Wilson ◽  
Ricardo Vardasca ◽  
Jorge Luis García-Alcaraz ◽  
Jesús Everardo Olguín-Tiznado ◽  
...  

Temperature gradient changes on the surface of the skin or in the middle of the body are signs of a disease. The aim of this study is to develop quantitative models for the prediction of cumulative trauma disorders (CTDs) arising from highly repetitive activities, considering risk factors, such as age, gender, body mass index (BMI), blood pressure (BP), respiratory rate (RR), and heart rate, to prevent injuries in manufacturing factory operators. This research involved 19 individuals from the area of sanding and 14 individuals from the area of tolex in manufacturing factories who had their vital signs and somatometry taken, as well as thermal images of their hands in the dorsal and palmar areas; an evaluation by the OCRA method was also applied. Factors such as BP and heart rate were determined to significantly influence the injuries, but no strong association with BMI was found. Quadratic regression models were developed, the estimates of which were adequately adjusted to the variable (R2 and R2 adjusted > 0.70). When integrating the factors of the OCRA method to the generated models, a better fit was obtained (R2 and adjusted R2 > 0.80). In conclusion, the participants who present levels out of the normal range in at least one of the factors have high probabilities of developing injuries in their wrists.

JUTI UNISI ◽  
2019 ◽  
Vol 3 (1) ◽  
pp. 26-34
Author(s):  
Syaeful Arief

Human factors are very important factors in small and medium industries, in determining the productivity of a production system. However, work safety and comfort are often overlooked, as happened in two different companies, namely food companies and manufacturing companies. Both are influenced by the conditions of the company's work facilities that are less ergonomic, so that they can endanger the body of the worker. A similar thing also happened to Manufacturing companies. This study aims to analyze and make a proposal for a more ergonomic work facility design using the Ergonimi pastoral approach. From the results of the improvement it was found that the risk level of Cumulative Trauma Disorders (CTD) was reduced from high to low and from high to moderate. While productivity of work time increases by 10-20%.


2020 ◽  
Author(s):  
Sera Manik

Ergonomi menjadi pilar kesehatan dan menjadi salah satu indikator kesejahteraan. perbaikan ergonomi perlu dilakukan sebagai salah satu upaya pencegahan terhadap penyakit CTDs (Cumulative Trauma Disorders) akibat faktor risiko kerja postur janggal, beban, frekuensi dan durasi yang bersumber dari pekerjaan, seperti nyeri tengkuk, nyeri pinggang bawah atau low back pain, rasa baal pada jari telunjuk, jari tengah dan jari manis yang disertai nyeri terbakar pada malam hari, kekakuan, lemah dan nyeri saat tangan digunakan dan dikenal dengan nama Carpal Tunnel Syndrome. Dalam ergonomi, postur tubuh adalah faktor yang sangat penting, salah satunya postur duduk yang setiap orang lakukan setiap hari dalam durasi berjam-jam. Tujuan utama membuat desain ergonomi untuk kursi atau tempat duduk dan meja adalah menciptakan sedemikian rupa bentuk kursi dan meja belajar, sehingga dapat mempertahankan postur tulang punggung yang fi siologis, dengan demikian diharapkan kerja otot tidak perlu berkontraksi secara berlebihan. Masalah ketidaksesuaian aspek ergonomi antara sarana kerja dan manusia serta pengaruhnya terhadap kesehatan belum mendapatkan perhatian yang serius di Indonesia. Hal ini terbukti dengan masih banyaknya tempat-tempat kerja yang belum berpedoman dengan kaidah ergonomi dalam hal penyediaan peralatan kerja bagi tenaga kerja. Ketepatan dimensi merupakan salah satu faktor penentu kenyamanan yang menunjang aspek fungsional dari suatu rancangan. Untuk menghasilkan suatu desain yang tepat dimensi perlu pertimbangan yang matang dan observasi yang cermat terkait dengan faktor manusia sebagai pengguna produk.


2014 ◽  
Vol 22 (2) ◽  
pp. 193-198 ◽  
Author(s):  
Humberto Gomes Vidal ◽  
Evelyne Pessoa Soriano ◽  
Arnaldo de França Caldas Junior ◽  
Marcus Vitor Diniz de Carvalho ◽  
Luiz Gutenberg Toledo de Miranda Coelho Junior ◽  
...  

1983 ◽  
Vol 27 (4) ◽  
pp. 312-312
Author(s):  
T. Armstrong ◽  
B. Joseph ◽  
Y. Lifshitz ◽  
C. Woolley

Cumulative Trauma Disorders (CTD) such as carpal tunnel syndrome, tenosynovitis, and strains are a common health problem among people who perform repetitive work with their hands. Repeated exertions and movements with certain hand postures, stresses on the surface of the hand and arm, vibrations, low temperatures, and use of gloves all have been identified as factors of CTD. To facilitate identification of these factors, a job analysis procedure based on traditional work measurement techniques was developed. Jobs are first divided into sequences of acts or elements; postures, forces, and other physical factors associated with each element then are determined. This process is facilitated by a video tape system that is used to film the job and can be played back in slow motion. A microcomputer is used to facilitate recording and storage of element sequences. Surface electromyograms of the medial forearm are calibrated and recorded on videotape for estimation of forces exerted with the hand. Finally, recommendations for control of CTD are based on identification of stressful elements.


Author(s):  
Musyahadah Arum Pertiwi ◽  
I Dewa Gede Hari Wisana ◽  
Triwiyanto Triwiyanto ◽  
Sasivimon Sukaphat

Heart rate and body temperature can be used to determine the vital signs of humans. Heart rate and body temperature are two important parameters used by paramedics to determine the physical health condition and mental condition of a person. Because if your heart rate or body temperature is not normal then you need to make further efforts to avoid things that are not desirable. The purpose of this study is to design a heart rate and body temperature. In this study, the heart rate is detected using a finger sensor which placed on the finger. This sensor detects the heart rate pulses through infrared absorption of blood hemoglobin, and measure the body temperature using a DS18B20 temperature sensor which is placed axially. DS18B20 sensor works by converting temperature into digital data. The measurement results will be displayed on liquid crystal display (LCD) 2 x 16 and the data will be sent to android mobile phone via Bluetooth.  After the comparision beetwen the desain and the standart, the error is 0.46% for beats per minutes (BPM) parameters and 0.31 degrees Celsius for temperature parameters.


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