PENGARUH BEBAN KERJA DAN FAKTOR LINGKUNGAN FISIK TERHADAP TEKANAN DARAH DAN DENYUT NADI PEKERJA BAGIAN ARC FURNACE DAN ROLLING MILL PT INTI GENERAL YAJA STEEL SEMARANG
Abstract: The optimal work
efficiency can be achieved if there is a beneficial balance of workload, added
workload causecl by work environment, and work capacity. One of the factors of
added workload caused by work environment is physical factor, such as air
temperature, lighting, dampness, air rapidity, noise, mechanical vibration,
radiation and air pressure. Metal foundry industry is closely related to
dominant physical environment factor, such as heat pressure, noise, and
lighting. Those factors affect on one's physical performance especially
workers' blood pressure and pulse. Objective of this research is to analyze lhe
effect of workload and physical environment factor on workers'blood pressure,
pulse, as well as fatigue level in Arc Furnace ancl Rolling Mill department, PT
Inti General Yaja Steel Semarang. Method used in this research is the quasi
experiment with one group pre and post test design. Research samples are 47
people who are selected by inclusion criteria. Heat pressure and noise are
measured in the middle of first ffice hours at l0 a.m. approximately, while
blood pressure and pulse are measurecl before and after working in the first
ffice hours or at break hours. Result of this research shows that blood
pressure in average before working is (systole:119,7 mmHg, diastole:84 mmHg),
higher than afterworking (systole:107,2 mmHg, diastole:78,9 mmHg). The average
of pulse before working is (8 1,5 times/minute), lower than after working (87,5
times/minute). It can be concluded that there is difference of blood pressure
before working and after working (systole; p- Wilcoxon Sign Ranks = 0,001,
tliatole; p- ll/ilcoxon Sign Ranl<s,:0,003). There is dffirence of pulse
before working and after working (p-paired t test: 0,001). Workers' blood
pressure is degrading, while their pulse is rising, this is due to the fact
that workers have already dealt with workload, heat pressttre and noise in work
environment.
Penulis: Ulfa Nurullita
Kode Jurnal: jpkesmasdd070033
