Table 2.
Summary of the included studies with study design, categories of monitoring and physiological or environmental biometrics
| Authors and years | Study design | Categories of monitoring | Biometrics |
|---|---|---|---|
| Al-Bouwarthan et al., 2020 [16] | Field study, observational | physiological monitoring; physical activity monitoring | heart rate; physical activity |
| Culp & Tonelli, 2019 [49] | Descriptive observational study | multi-parameter monitoring | heart rate; physical intensity |
| Hertzberg et al., 2017 [50] | Methodological/analytical study | multi-parameter monitoring | heart rate; temperature; physical activity |
| Kakamu et al., 2021 [58] | Field study, cross-sectional | physiological monitoring; temperature monitoring; environmental monitoring | heart rate; skin temperature; humidity; wet bulb globe temperature |
| Kakamu et al., 2022 [59] | Field study | multi-parameter monitoring | heart rate; skin temperature; kilocalories per hour |
| Kim, A. & Yoo, 2023 [63] | Sensor-based field risk assessment | physiological monitoring; temperature monitoring; psychological comfort survey | heart rate; temperature; psychological comfort level |
| Kim, Y.-S. et al., 2022 [51] | Device development and pilot study | multi-parameter monitoring | heart rate; skin temperature, electrocardiograms, physical activity |
| Mitchell et al., 2017 [52] | Observational cohort study | multi-parameter monitoring | heart rate; temperature; physical activity |
| Pancardo et al., 2015 [9] | System design and validation | physiological monitoring; temperature monitoring | heart rate; humidity; temperature |
| Ruas et al., 2020 [61] | Observational study | physiological monitoring; temperature monitoring | heart rate; temperature |
| Runkle et al., 2019 [37] | Field validation study | physiological monitoring; temperature monitoring | heart rate; experienced temperature; daily heat symptoms |
| Shakerian et al., 2021 [53] | Sensor-based case study | physiological monitoring; temperature monitoring | heart rate; electrodermal activity; temperature |
| Sharma et al., 2022 [62] | Wearable-based observational study | physiological monitoring; temperature monitoring; environmental monitoring | heart rate; skin temperature; dry-bulb temperature; wet-bulb temperature; globe temperature; relative humidity |
| Spook et al., 2019 [36] | Needs assessment (qualitative) | interviews on wearable sensor technology | - |
| Sugg et al., 2018 [54] | Observational (sensor-based) study | physiological monitoring; temperature monitoring | heart rate; experienced temperatures |
| Sugg et al., 2020 [55] | Qualitative interview study | survey on digital devices | - |
| Togo & Hirata, 2021 [60] | System design and prototype demo | physiological monitoring; temperature monitoring | heart rate; temperature/humidity inside clothes |
| Uejio et al., 2018 [56] | Observational study | environmental monitoring | environmental temperature; humidity |
| Wang et al., 2019 [57] | Personal sampling field study | environmental monitoring | environmental temperature: wet bulb globe temperature |
Multi-parameter monitoring includes physiological, temperature, and physical activity monitoring