A Review on Oxygen Consumption and Heart Rate Monitoring Methods & Applications - Safari, Siti Sabrena B.; Sivakumar, Saaveethya; Lim, King Hann; Tan, Terence Peng Lian (2022 International Conference on Green Energy, Computing and Sustainable Technology (GECOST), Green Energy, Computing and Sustainable Technology (GECOST), 2022 International Conference on, 2022)