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Elevated Core Temperature in Florida Fernery Workers: Results of a Pilot Study
Valerie Vi Thien Mac1, Jose Antonio Tovar-Aguilar2, Lisa Elon1
11 Emory University.
Workplace Health & Safety
|July 19, 2019
Summary
Outdoor workers face increased heat injury risks. Fernery workers experienced elevated body core temperatures, with higher odds for females and increased energy expenditure, highlighting the need for protective interventions.
Area of Science:
- Occupational Health
- Environmental Health
- Physiology
Background:
- Rising extreme weather events increase risks for outdoor workers.
- Understanding physiological responses to heat is crucial for adaptation strategies in agricultural settings.
Purpose of the Study:
- To characterize occupational heat exposure and physiological heat stress in fernery workers.
- To identify key vulnerability factors such as gender and energy expenditure.
Main Methods:
- Examined 43 fernery workers over 86 workdays during summer 2012-2013.
- Monitored body core temperature (Tc) with a threshold of 38.0°C (Tc38) as the key outcome.
- Analyzed heat-related illness (HRI) risk factors including sex and energy expenditure.
Main Results:
- Participants' Tc exceeded 38.0°C on 57% of workdays.
- Increased energy expenditure (100 kcal) raised odds of Tc38 by 12%.
- Females had 5 times greater odds of Tc38 compared to males, adjusting for energy expenditure.
Conclusions:
- Florida fernery workers exhibit elevated body core temperatures, indicating a significant risk of occupational heat-related illness.
- Vulnerability to heat stress is influenced by energy expenditure and sex.
- Policy and interventions are needed to mitigate heat risks for agricultural workers.
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