| | Parameters | Measuring sensor and example | Indicator for IEQ factors | Ref |
| | Skin temperature (Tskin) | iButton (LDS1992L), infrared camera, resistance temperature sensor, wristband | Thermal, visual | [13, 37, 63, 80, 155, 183–185] | | Skin humidity/moisture | Wristband, interdigital capacitance (IDC), polymer optical fiber sensor | Thermal, IAQ, acoustic | [63, 180, 186] | | Heart rate (HR) | Heart rate monitor (SUUNTO Dual Belt), wristband, smart watch | Thermal, IAQ, acoustic | [13, 129, 155, 183, 185] | | Heart rate variability (HRV) | Heart rate monitor (SUUNTO Dual Belt), wristband, smart watch | Thermal, visual, acoustic | [16, 38, 145, 187] | | Blood pressure (BP) | Electronic sphygmomanometer | Thermal, IAQ, visual, acoustic | [4, 13, 60, 166, 188] | | Systolic blood pressure | Electronic sphygmomanometer (HEM-7132, OMRON) | Thermal, IAQ, visual, acoustic | [4, 92, 184, 188] [185] | | Diastolic blood pressure | Same above | Thermal, IAQ, visual, acoustic | [185] | | Oxygen saturation (SpO2) | Blood oxygen saturation monitor (Heal Force Prince-100H)
Wristband (Fitbit) | Thermal, IAQ, visual | [183, 189–191] | | Eardrum temperature | Infrared thermometer (TH839S OMRON) | Thermal | [39, 183] | | Body core temperature | CorTemp HT150001 with capsule sensor | Thermal | [133, 135] | | End tidal partial CO2 | LifeSense LS1 | Thermal | [39, 192] | | Respiration rate (RR) | Electromagnetic sensing system, ultrasonic proximity sensor | Acoustic, thermal, IAQ | [84, 137, 158, 189, 192, 193] | | Respiration flow rate | Gas flowmeter | Acoustic, thermal, IAQ | [137, 190] | | Muscle activity | Physiometer (PHY-400) | Visual | [146] | | Electrodermal activity (EDA) | Wristband (Fitbit), Ag/AgCl disc electrodes, galvanic skin resistance (GSR) | Acoustic | [193–195] | | Electroencephalogram (EEG) | Headband (Muse), EEG 8 channels of MP150, dry electrodes, passive electrodes | IAQ, acoustic, thermal, visual | [16, 90, 137, 141, 142, 196, 197] | | Electrocardiogram (ECG) | PPG sensor, smart watch (Apple watch), wristband (Fitbit Charge 2-4) | Acoustic, visual, Thermal, IAQ | [84, 129, 130, 137] | | Pulse rate | Wristband, optical sensor | IAQ, thermal, visual | [192, 198, 199] | | Polysomnography (PSG) | Electroencephalogram devices | Acoustic | [200] | | Cortical arousals | Electroencephalogram devices | Acoustic | [200] | | Rapid eye movement (REM) | Electrooculography | Acoustic | [201] | | Pupil diameter/size | Camera, eye tracking systems | Visual, thermal | [157, 202] | | Skin capillary blood flow (SCBF) | Infrared camera, laser Doppler flowmetry | Thermal | [186] | | Transepidermal water loss (TEWL) | Capacitive TEWL sensors | Thermal | [186] | | Metabolic rate | Wearable multiparametric device, metabolic cart with facemask or canopy | Thermal, visual, IAQ | [192, 203, 204] | | Forced vital capacity (FVC) | Spirometer | IAQ | [140] | | Sweat loss | Sweat absorption pad, hydration sensor | Thermal | [49, 135, 184] | | Eye tracking | Desk mounted eye tracking system (TOBII T60), desktop mounted eye gaze tracking (EGT) instrument | Visual | [205] | | Electromyography (EMG) | Capacitive electrodes, surface EMG channels | Acoustic | [194, 195] | | Sensory nerve conduction velocity (SCV) | Surface active electrode, subcutaneous needle electrodes | Thermal | [154] | | Skin resistance | Galvanic skin response sensor | Visual | [206] | | Pupillary unrest index | Infrared video pupillography, rye-tracking instrument | Visual | [202] | | Blink rate | Headband, eye tracking instrument, Doppler sensor, electrooculography, camera | Visual | [146, 202] | | Average fixation duration | Eye tracking instrument | Visual | [202] | | Grip strength | Dynamometer, flex sensor | Thermal | [207] | | Urinary melatonin | Urine sampling | Thermal, visual | [208] | | Salivary alpha-amylase | Kit, biosensor | Thermal | [209] |
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