PERBEDAAN KECEPATAN WAKTU REAKSI RANGSANG CAHAYA SEBELUM DAN SESUDAH TERPAPAR FAKTOR LINGKUNGAN FISIK PADA PEKERJA INDUSTRI PENGECORAN LOGAM PT. INGENYST SEMARANG
Abstract: Work activity is
usually done in an environment or situation which leads to addecl burflen of
workers physically and spiritually. Physical factor of added burden as the
effect of dominant work environtruent in metal faundry industry is heat
pressure, noise, and lighting. Workload and environment factor affect on
workers' convenience and health problem, so that it can increase workload
itself, accelerate fatigue and subjective complaint, as well as decrease work
productivity. One of the fatigue measurements is by calculating reaction time
toward some stimulus. Method: Location chosen is department of melting ancl
making of concrei iron and curved iron which have the same workload. The amount
of samples is 47 workers with age inclusion criteria of 40 years old maximally,
male, I workhours each day, more than a week of work perioi, hating no hearth
and kidney problem, diabetes mellitus, hypertension, hypotension, anemia, ancl
asthma, having no lijuor habit and sport. This Qpe of research is the quasi
experiment with one group pre antl post test tlesign. Reaition time rapidity is
measured before ancl after working with Rection Timer 77, heat pressure is
measured with Questemp 10, whereas noise is measured with sound level meter.
Result of the research shows that the average of reaction time before working
is 253,2 ml second, it is lower if compared to the average of reaction time
after working, that is, 290,7 ml second. ln conclusion, there is difference of light
stimulating reaction time for workers in deportment of melting and making of
concrete iron and curyed iron between before antl after working (p:0,00 1).
Reaction time rapidity is increasing after workers deal with work environment
either hear pressure, lighting, or noise.
Penulis: Ulfa Nurullita
Kode Jurnal: jpkesmasdd070037
