Development of the outdoor personal thermal index (OPTI) for evaluating heat strain risk using personal, observational, geographical, and meteorological data

• Published in: BMC public health Vol. 25; no. 1; pp. 2445 - 15
• Main Authors: Ordudari, Zahra, Yazdanirad, Saeid, Dehghan, Habibollah, Azhdari, Mohammadreza
• Format: Journal Article
• Language: English
• Published: England BioMed Central Ltd 14.07.2025; BioMed Central; BMC
• Subjects: Accuracy; Adult; Age; Body mass index; Body temperature; Consent; Environmental aspects; Environmental conditions; Geographical data; Health aspects; Heart beat; Heart rate; Heart Rate - physiology; Heat; Heat stress; Heat stress disorders; Heat Stress Disorders - diagnosis; Heat stress index; Heat tolerance; Hot Temperature - adverse effects; Humans; Humidity; Insulation; Male; Metabolic rate; Metabolism; Meteorological Concepts; Meteorological data; Middle Aged; Observational data; Occupational health and safety; Outdoors; Parameters; Personal factors; Physical fitness; Physiological aspects; Physiological responses; Physiology; Prevention; Regression analysis; Relative humidity; Risk Assessment - methods; Risk factors; Thermal risk; Thermal strain; Weather; Work environment; Workers; Taiwan; Iran; Observational data; Personal factors; Heat stress index; Meteorological data; AMOS model; Geographical data; Outdoor workplace; Thermal risk

Numerous thermal indices have been developed to assess heat stress among workers. This study aimed to develop and validate a new and accurate index for outdoor workplace environments, utilizing personal, observational, meteorological, and geographical parameters as well as eliminating the need for i...