Instruments used in this study is Questemp, sphigmomanometer, Stethoscope, questionnaires, and data recording sheet. The research data was obtained from primary data and secondary data. Primary data obtained through the measurement of blood pressure and thermal pressure measurement, other than that from observations and interviews. While the secondary data obtained from the relevant company documents. Statistical analysis using Wilcoxon test Pair Test Match. From the results showed an average pressure of the heat with ISBB is 29.590 C. Based on the results of statistical tests for blood pressure, mean arterial pressure before and after exposure to heat results obtained where the value of p = 0.025 (p <0.05). Whereas for systolic blood pressure before and after exposure to heat stress which obtained p = 0.02 (p <0.05) and diastolic blood pressure of p = 0.297 where (p> 0.05).
From the results of research and discussion can be concluded no difference in systolic blood pressure and arterial blood pressure an average of the worker before and after exposure to heat stress, and blood pressure after exposure to heat stress tended to decrease from the prior exposure to heat stress, whereas diastolic blood pressure does not exist differences in blood pressure before and after heat stress in workers trpapar the Perhutanioffice Moulding Unit I Central Java Semarang. Suggestions can be submitted at the company is more concerned with molding the work space and labor required for at least 5 glasses of water consumed during the work.
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