Thermal perception thresholds among workers in a cold climate

Area of Science:

• Occupational Health
• Environmental Medicine
• Sensory Physiology

Background:

• Understanding the impact of occupational cold exposure on sensory perception is crucial for worker safety.
• Previous research has not definitively established whether prolonged cold climate work affects thermal perception thresholds.

Purpose of the Study:

• To investigate the influence of cold exposure on thermal perception thresholds in a working population.
• To determine if living and working in cold climates leads to impaired sensory functions.

Main Methods:

• A cross-sectional study involving 251 male and female mine workers in Norway and Sweden.
• Assessment included questionnaires, clinical examinations, and measurements of thermal perception thresholds (heat and cold) on finger digits.
• Analysis considered factors like age, gender, test site, frostbite history, and medication use.

Main Results:

• Thermal perception thresholds were influenced by age, gender, and the specific test site (digits).
• Impairment of thresholds was associated with a history of frostbite and the use of neurosensory-affecting medications.
• No significant differences were observed in normative values compared to populations from warmer climates.

Conclusions:

• The study does not support the hypothesis that general cold climate living/working impairs thermal perception thresholds.
• Localized cold-induced damage, specifically frostbite, demonstrably leads to impaired thermal perception.
• Occupational health strategies should focus on preventing localized cold injuries to maintain sensory function.