Mechanical process Accurate estimation 1 Aqueous extraction 1 Article 1 Atmospheric pressure 1 COSMED K5 1 Chemical extraction process 1 Controlled environment 1 Cost benefit analysis 1 Cost estimating 1 Elaeis 1 Electrocardiography 1 Empty fruit bunches 1 Energy expenditure 1 Environment friendly 1 Environmental sensor 1 Exercise 1 Extraction 1 Fruits 1 Hexane 1 Humans 1 Machine learning models 1 Metabolic systems 1 Oil extraction rates 1 Oil palm empty fruit bunch (OPEFB) 1 Oil well flooding 1 Oxygen 1 Oxygen Consumption 1 Oxygen uptake 1 Palm oil 1