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Updated: Jan 17, 2026

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions
Published on: March 9, 2021
Cold exposure among outdoor workers in the Arctic setting
Rebecca Tapper1, Hans Pettersson1, Albin Stjernbrandt1
1Department of Epidemiology and Global Health, Umeå University, Umeå, Sweden.
Outdoor workers in northern Sweden frequently experience cold and have limited knowledge of cold weather protection. Improving clothing insulation and increasing physical activity are recommended to mitigate cold exposure risks.
Area of Science:
- Occupational Health
- Environmental Physiology
- Workplace Safety
Background:
- Cold exposure is a significant risk factor for outdoor workers, potentially impacting health and productivity.
- Understanding the interplay between environmental conditions and physical demands is crucial for worker well-being.
Purpose of the Study:
- To quantify cold exposure and occupational physical activity in diverse outdoor work sectors in northern Sweden.
- To assess workers' perceptions of cold and their knowledge of protective measures.
Main Methods:
- Utilized a mixed-methods approach combining digital surveys, temperature loggers, and accelerometers.
- Collected data from 133 workers across preschool, park/maintenance, and power grid occupations.
- Measured ambient temperatures, duration of cold exposure, and physical activity patterns (sitting, standing, walking).
Main Results:
- 33% of workers frequently felt cold, and 39% lacked adequate knowledge of cold protection.
- Workers spent a median of 131 minutes daily in temperatures below 10°C.
- Outdoor physical activity comprised 20% sitting, 54% standing, and 26% walking.
Conclusions:
- A substantial portion of outdoor workers face significant cold exposure and knowledge gaps regarding protection.
- Findings suggest a need for enhanced thermal insulation in workwear and strategies to increase physical activity during work.
- Interventions should focus on improving both environmental controls and worker education for cold stress prevention.
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