This project proposes to examine the association between heat exposure and traumatic injury risk in agricultural workers, assess a potential mechanism for increased injury risk in crop workers exposed to heat stress and its relation to productivity, and examine the feasibility of using a biomarker of heat acclimation to detect workers at risk for heat-related illness (HRI) and injury, with the ultimate goal of prevention. Th career development plan and research outlined in this proposal will allow Dr. Spector to build upon her background in epidemiology, biostatistics, and occupational health;combine her interests in occupational injury and HRI prevention;and develop new skills in 1) effectively using workers'compensation data to explore hypotheses;2) testing hypotheses in working populations;and 3) translating research into practice. The local environment for public health research in Washington is outstanding, and Dr. Spector's proposed mentorship committee includes accomplished mentors with established, multidisciplinary research programs. Under the primary mentorship of Dr. Fenske, Director of the Pacific Northwest Agricultural Safety and Health (PNASH) Center, Dr. Spector will: 1) estimate the association between heat exposure and injury risk in agricultural workers using established climate models and WA workers'compensation data;2) estimate associations between heat stress, psychomotor performance, and productivity in adult outdoor crop workers in field harvest conditions;3) assess the feasibility of using urinary 8-hydroxy-2'-deoxyguanosine (8-OHdG) as a biomarker of heat acclimation in field conditions;4) and address NIOSH's r2p mission through dissemination of findings to the agricultural community and industry. We expect, based on previous work, that heat stress is associated with increased injury risk and decreased psychomotor performance and productivity, particularly in poorly acclimated workers, and that increases in heat strain are associated with increases in 8-OHdG. The results, protocols, and dissemination products developed during the course of this project will be valuable outputs that we expect will improve our ability to estimate future productivity losses and health effects related to climate change, wil help us to engage employers in HRI prevention efforts, and will enable us to better measure the effectiveness of HRI prevention interventions. The ultimate goal of this work is to reduce traumatic injuries and improve the health and well-being of agricultural workers (NORA AFF Strategic Goals 4 &5) in a changing climate. This harmonizes with Dr. Spector's ultimate career goal of preventing occupational injuries and illnesses and their consequences in at-risk occupational populations.

Public Health Relevance

This project will potentially improve our understanding of the relationship between heat exposure, injury risk, and productivity in agricultural workers. A better understanding of this relationship is expected to lead to more effective prevention of heat-related illness and its consequences in at-risk workers and improved estimates of future productivity losses and health effects related to climate change.

National Institute of Health (NIH)
National Institute for Occupational Safety and Health (NIOSH)
Research Scientist Development Award - Research & Training (K01)
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Safety and Occupational Health Study Section (SOH)
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Frederick, Linda J
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University of Washington
Public Health & Prev Medicine
Schools of Public Health
United States
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Spector, June T; Krenz, Jennifer; Calkins, Miriam et al. (2018) Associations between heat exposure, vigilance, and balance performance in summer tree fruit harvesters. Appl Ergon 67:1-8
Quiller, Grant; Krenz, Jennifer; Ebi, Kristie et al. (2017) Heat exposure and productivity in orchards: Implications for climate change research. Arch Environ Occup Health 72:313-316
Kuras, Evan R; Richardson, Molly B; Calkins, Miriam M et al. (2017) Opportunities and Challenges for Personal Heat Exposure Research. Environ Health Perspect 125:085001
Spector, June T; Bonauto, David K; Sheppard, Lianne et al. (2016) A Case-Crossover Study of Heat Exposure and Injury Risk in Outdoor Agricultural Workers. PLoS One 11:e0164498