| dc.description.abstract | Work in rubber plantations is considered a physically demanding type of work. Several negative impacts can occur when the physical workload exceeds the physiological capacity of the workers. Chronically, this condition can lead to excessive fatigue. One approach to addressing this issue is through ergonomic evaluation. Ergonomic evaluation is conducted to ensure that the workload does not exceed the capabilities of the workers. Based on this background, it is necessary to conduct research on determining the workload of rubber farmers based on physiological criteria in order to determine the optimal rest time for workers. This is aimed at reducing work fatigue, which not only has a detrimental effect on the workers' health but also on work quality and performance. The method used in this research is by measuring the heart rate before, after, and during work every hour. From this heart rate data, calculations will be made for energy expenditure, oxygen consumption, and %CVL (cardiovascular load). The workload categories will be determined based on the calculations. Subsequently, the calculation for determining the optimal rest time for workers will be based on the workload level. The research shows that the workload experienced by rubber farmers in CV. Eja Nursery, Kutai Kartanegara Regency, can be classified as light to moderate. Before starting work, the average heart rate of the farmers is 75 bpm, while during work, it increases to an average of 101 bpm. After completing work, the average heart rate decreases to 97 bpm due to reduced work activity. The average oxygen consumption of rubber farmers is 0.9 liters per minute, which falls into the category of light workload. The energy expenditure ranges from low to moderate, with an average of 3.4 kcal/minute during work. Energy consumption is 1.7 kcal/minute. The average cardiovascular load experienced by the farmers is 25.6%, which falls into the category of light workload, indicating no significant burden. Based on the calculations of physiological workload, it can be concluded that the energy requirements of each rubber farmer are below the standard limit, indicating no physiological fatigue. The recommended rest time according to the ILO allowance standard is 25% of the work time. | en_US |
