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Wen J, Cheng J, Wang L, Li C, Zou Y, Wu J, Liu J. Dynamic molecular choreography induced by acute heat exposure in human males: a longitudinal multi-omics profiling study. Front Public Health 2024; 12:1384544. [PMID: 38813424 PMCID: PMC11135052 DOI: 10.3389/fpubh.2024.1384544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 05/02/2024] [Indexed: 05/31/2024] Open
Abstract
Introduction Extreme heat events caused by occupational exposure and heat waves are becoming more common. However, the molecular changes underlying the response to heat exposure in humans remain to be elucidated. Methods This study used longitudinal multi-omics profiling to assess the impact of acute heat exposure (50°C for 30 min) in 24 subjects from a mine rescue team. Intravenous blood samples were collected before acute heat exposure (baseline) and at 5 min, 30 min, 1 h, and 24 h after acute heat exposure (recovery). In-depth multi-omics profiling was performed on each sample, including plasma proteomics (untargeted) and metabolomics (untargeted). Results After data curation and annotation, the final dataset contained 2,473 analytes, including 478 proteins and 1995 metabolites. Time-series analysis unveiled an orchestrated molecular choreography of changes involving the immune response, coagulation, acid-base balance, oxidative stress, cytoskeleton, and energy metabolism. Further analysis through protein-protein interactions and network analysis revealed potential regulators of acute heat exposure. Moreover, novel blood-based analytes that predicted change in cardiopulmonary function after acute heat exposure were identified. Conclusion This study provided a comprehensive investigation of the dynamic molecular changes that underlie the complex physiological processes that occur in human males who undergo heat exposure. Our findings will help health impact assessment of extreme high temperature and inspire future mechanistic and clinical studies.
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Affiliation(s)
- Jirui Wen
- Department of Otolaryngology-Head and Neck Surgery, Deep Underground Space Medical Center, West China Hospital, Sichuan University, Guoxuexiang, Chengdu, China
- Jinping Deep Underground Frontier Science and Dark Matter Key Laboratory of Sichuan Province, Liangshan, China
- State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, Sichuan University, Chengdu, China
| | - Juan Cheng
- Department of Otolaryngology-Head and Neck Surgery, Deep Underground Space Medical Center, West China Hospital, Sichuan University, Guoxuexiang, Chengdu, China
| | - Ling Wang
- Department of Otolaryngology-Head and Neck Surgery, Deep Underground Space Medical Center, West China Hospital, Sichuan University, Guoxuexiang, Chengdu, China
- Jinping Deep Underground Frontier Science and Dark Matter Key Laboratory of Sichuan Province, Liangshan, China
| | - Can Li
- Department of Otolaryngology-Head and Neck Surgery, Deep Underground Space Medical Center, West China Hospital, Sichuan University, Guoxuexiang, Chengdu, China
| | - Yuhao Zou
- Department of Otolaryngology-Head and Neck Surgery, Deep Underground Space Medical Center, West China Hospital, Sichuan University, Guoxuexiang, Chengdu, China
| | - Jiang Wu
- Department of Otolaryngology-Head and Neck Surgery, Deep Underground Space Medical Center, West China Hospital, Sichuan University, Guoxuexiang, Chengdu, China
- Jinping Deep Underground Frontier Science and Dark Matter Key Laboratory of Sichuan Province, Liangshan, China
- Med-X Center for Manufacturing, Sichuan University, Chengdu, China
| | - Jifeng Liu
- Department of Otolaryngology-Head and Neck Surgery, Deep Underground Space Medical Center, West China Hospital, Sichuan University, Guoxuexiang, Chengdu, China
- Jinping Deep Underground Frontier Science and Dark Matter Key Laboratory of Sichuan Province, Liangshan, China
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Deshayes TA, Hsouna H, Braham MAA, Arvisais D, Pageaux B, Ouellet C, Jay O, Maso FD, Begon M, Saidi A, Gendron P, Gagnon D. Work-rest regimens for work in hot environments: A scoping review. Am J Ind Med 2024; 67:304-320. [PMID: 38345435 DOI: 10.1002/ajim.23569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 01/08/2024] [Accepted: 01/23/2024] [Indexed: 03/16/2024]
Abstract
BACKGROUND To limit exposures to occupational heat stress, leading occupational health and safety organizations recommend work-rest regimens to prevent core temperature from exceeding 38°C or increasing by ≥1°C. This scoping review aims to map existing knowledge of the effects of work-rest regimens in hot environments and to propose recommendations for future research based on identified gaps. METHODS We performed a search of 10 databases to retrieve studies focused on work-rest regimens under hot conditions. RESULTS Forty-nine articles were included, of which 35 were experimental studies. Most studies were conducted in laboratory settings, in North America (71%), on healthy young adults, with 94% of the 642 participants being males. Most studies (66%) employed a protocol duration ≤240 min (222 ± 162 min, range: 37-660) and the time-weighted average wet-bulb globe temperature was 27 ± 4°C (range: 18-34). The work-rest regimens implemented were those proposed by the American Conference of Governmental and Industrial Hygiene (20%), National Institute of Occupational Safety and Health (11%), or the Australian Army (3%). The remaining studies (66%) did not mention how the work-rest regimens were derived. Most studies (89%) focused on physical tasks only. Most studies (94%) reported core temperature, whereas only 22% reported physical and/or mental performance outcomes, respectively. Of the 35 experimental studies included, 77% indicated that core temperature exceeded 38°C. CONCLUSIONS Although work-rest regimens are widely used, few studies have investigated their physiological effectiveness. These studies were mainly short in duration, involved mostly healthy young males, and rarely considered the effect of work-rest regimens beyond heat strain during physical exertion.
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Affiliation(s)
- Thomas A Deshayes
- Montreal Heart Institute, Montréal, Québec, Canada
- École de kinésiologie et des sciences de l'activité physique (EKSAP), Faculté de médecine, Université de Montréal, Montréal, Québec, Canada
| | - Hsen Hsouna
- Montreal Heart Institute, Montréal, Québec, Canada
- École de kinésiologie et des sciences de l'activité physique (EKSAP), Faculté de médecine, Université de Montréal, Montréal, Québec, Canada
| | - Mounir A A Braham
- Département des sciences de l'activité physique, Université du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada
- Département d'anatomie, Université du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada
| | - Denis Arvisais
- Bibliothèque des sciences de la santé, Université de Montréal, Montréal, Québec, Canada
| | - Benjamin Pageaux
- École de kinésiologie et des sciences de l'activité physique (EKSAP), Faculté de médecine, Université de Montréal, Montréal, Québec, Canada
- Centre de recherche de l'Institut universitaire de gériatrie de Montréal (CRIUGM), Montréal, Québec, Canada
- Centre interdisciplinaire de recherche sur le cerveau et l'apprentissage (CIRCA), Montréal, Québec, Canada
| | - Capucine Ouellet
- Institut de recherche Robert-Sauvé en santé et en sécurité du travail (IRSST), Montréal, Québec, Canada
| | - Ollie Jay
- Heat and Health Research Incubator, University of Sydney, Sydney, New South Wales, Australia
| | - Fabien D Maso
- École de kinésiologie et des sciences de l'activité physique (EKSAP), Faculté de médecine, Université de Montréal, Montréal, Québec, Canada
- Centre interdisciplinaire de recherche sur le cerveau et l'apprentissage (CIRCA), Montréal, Québec, Canada
| | - Mickael Begon
- École de kinésiologie et des sciences de l'activité physique (EKSAP), Faculté de médecine, Université de Montréal, Montréal, Québec, Canada
- Centre de recherche du CHU Sainte-Justine, Montréal, Québec, Canada
| | - Alireza Saidi
- Institut de recherche Robert-Sauvé en santé et en sécurité du travail (IRSST), Montréal, Québec, Canada
| | - Philippe Gendron
- Département des sciences de l'activité physique, Université du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada
| | - Daniel Gagnon
- Montreal Heart Institute, Montréal, Québec, Canada
- École de kinésiologie et des sciences de l'activité physique (EKSAP), Faculté de médecine, Université de Montréal, Montréal, Québec, Canada
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Deshayes TA, Sodabi DGA, Dubord M, Gagnon D. Shifting focus: Time to look beyond the classic physiological adaptations associated with human heat acclimation. Exp Physiol 2024; 109:335-349. [PMID: 37885125 PMCID: PMC10988689 DOI: 10.1113/ep091207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Accepted: 10/12/2023] [Indexed: 10/28/2023]
Abstract
Planet Earth is warming at an unprecedented rate and our future is now assured to be shaped by the consequences of more frequent hot days and extreme heat. Humans will need to adapt both behaviorally and physiologically to thrive in a hotter climate. From a physiological perspective, countless studies have shown that human heat acclimation increases thermoeffector output (i.e., sweating and skin blood flow) and lowers cardiovascular strain (i.e., heart rate) during heat stress. However, the mechanisms mediating these adaptations remain understudied. Furthermore, several possible benefits of heat acclimation for other systems and functions involved in maintaining health and performance during heat stress remain to be elucidated. This review summarizes recent advances in human heat acclimation, with emphasis on recent studies that (1) advanced our understanding of the mechanisms mediating improved thermoeffector output and (2) investigated adaptations that go beyond those classically associated with heat acclimation. We highlight that these studies have contributed to a better understanding of the integrated physiological responses underlying human heat acclimation while leaving key unanswered questions that will need to be addressed in the future.
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Affiliation(s)
- Thomas A. Deshayes
- Montreal Heart InstituteMontréalCanada
- School of Kinesiology and Exercise ScienceUniversité de MontréalMontréalCanada
| | - Dèwanou Gilles Arnaud Sodabi
- Montreal Heart InstituteMontréalCanada
- School of Kinesiology and Exercise ScienceUniversité de MontréalMontréalCanada
| | - Marianne Dubord
- Montreal Heart InstituteMontréalCanada
- School of Kinesiology and Exercise ScienceUniversité de MontréalMontréalCanada
| | - Daniel Gagnon
- Montreal Heart InstituteMontréalCanada
- School of Kinesiology and Exercise ScienceUniversité de MontréalMontréalCanada
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Wen J, Wang L, Cheng J, Ma T, Wen Q, Li C, Zou Y, Wan X, Wu J, Liu J. Time-series transcriptome reveals inflammatory signature in monocytes and neutrophils following acute heat exposure in mine rescuers. Physiol Rep 2024; 12:e15946. [PMID: 38339831 PMCID: PMC10858336 DOI: 10.14814/phy2.15946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 01/24/2024] [Accepted: 01/24/2024] [Indexed: 02/12/2024] Open
Abstract
Occupational exposure to extreme high temperatures and the increasing global temperatures necessitates a deeper understanding of the impact of heat exposure on human health. However, the molecular mechanisms underlying the response of monocytes and neutrophils to heat exposure in occupational population remain to be fully elucidated. This study used longitudinal transcriptome to assess the impact of acute heat exposure (50°C for 30 min) in 10 subjects from a mine rescue team before acute heat exposure (baseline) and at 5 min, 30 min, 1 h, and 24 h after acute heat exposure (recovery). The time-series analysis revealed a coordinated molecular choreography of changes involving inflammation, coagulation, extracellular matrix, and energy metabolism. Importantly, the study characterized the inflammatory signature associated with heat exposure in monocytes and neutrophils, as evidenced by the rapid activation of the inflammation-related transcriptome following heat exposure. Additionally, we pinpointed potential regulators, such as NR4A1, FOSL1, EGR3, and ATF3. In summary, the study suggested that the initial response to heat stress in monocytes and neutrophils from mine rescue team member was primarily characterized by a pro-inflammatory stress response, which could potentially lead to the development of inflammation and ultimately result in a systemic inflammatory response in heatstroke.
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Affiliation(s)
- Jirui Wen
- Department of Otolaryngology Head and Neck Surgery/Deep Underground Space Medical Center, West China HospitalSichuan UniversityChengduChina
- State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground EngineeringSichuan UniversityChengduChina
| | - Ling Wang
- Department of Otolaryngology Head and Neck Surgery/Deep Underground Space Medical Center, West China HospitalSichuan UniversityChengduChina
- State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground EngineeringSichuan UniversityChengduChina
| | - Juan Cheng
- Department of Otolaryngology Head and Neck Surgery/Deep Underground Space Medical Center, West China HospitalSichuan UniversityChengduChina
| | - Tengfei Ma
- Department of Otolaryngology Head and Neck Surgery/Deep Underground Space Medical Center, West China HospitalSichuan UniversityChengduChina
| | - Qiao Wen
- Department of Otolaryngology Head and Neck Surgery/Deep Underground Space Medical Center, West China HospitalSichuan UniversityChengduChina
| | - Can Li
- Department of Otolaryngology Head and Neck Surgery/Deep Underground Space Medical Center, West China HospitalSichuan UniversityChengduChina
| | - Yuhao Zou
- Department of Otolaryngology Head and Neck Surgery/Deep Underground Space Medical Center, West China HospitalSichuan UniversityChengduChina
| | - Xuehong Wan
- Department of Otolaryngology Head and Neck Surgery/Deep Underground Space Medical Center, West China HospitalSichuan UniversityChengduChina
- Med‐X Center for ManufacturingSichuan UniversityChengduChina
| | - Jiang Wu
- Department of Otolaryngology Head and Neck Surgery/Deep Underground Space Medical Center, West China HospitalSichuan UniversityChengduChina
- State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground EngineeringSichuan UniversityChengduChina
- Med‐X Center for ManufacturingSichuan UniversityChengduChina
| | - Jifeng Liu
- Department of Otolaryngology Head and Neck Surgery/Deep Underground Space Medical Center, West China HospitalSichuan UniversityChengduChina
- State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground EngineeringSichuan UniversityChengduChina
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Le VTH, Berman JD, Wattenberg EV, Ngo TV, Tran QA, Alexander BH. Temperature-related emergency injury visits in Hanoi, Vietnam. Inj Prev 2024; 30:33-38. [PMID: 37863513 PMCID: PMC10850667 DOI: 10.1136/ip-2023-044946] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 08/29/2023] [Indexed: 10/22/2023]
Abstract
BACKGROUND The short-term association between increasing temperatures and injury has been described in high-income countries, but less is known for low-income and-middle-income countries, including Vietnam. METHODS We used emergency injury visits (EIV) data for 2017-2019 from 733 hospitals and clinics in Hanoi, Vietnam to examine the effects of daily temperature on EIV. Time-series analysis with quasi-Poisson models was used to estimate a linear relative risk increase (RRI) for overall populations and ones stratified by age and sex. Exposure-response curves estimated non-linear associations as an RR between daily temperature and injury. Models were adjusted for the day of week, holidays, daily relative humidity, daily particulate matter, and long-term and seasonal trends. RESULTS AND CONCLUSIONS A total of 39 313 EIV were recorded averaging 36 injuries daily. Injuries more likely occurred in males and those aged 15-44, and aged 44-60. For linear effects, a 5°C increase in same day mean temperature was associated with an overall increased EIV (RRI 4.8; 95% CI 2.3 to 7.3) with males (RRI 5.9; 95% CI 3.0 to 8.9) experiencing a greater effect than females (RRI 3.0; 95% CI -0.5 to 6.5). Non-linear effects showed an increase in EIV at higher temperatures compared with the threshold temperature of 15°C, with the greatest effect at 33°C (RR 1.3; 95% CI 1.2 to 1.6). Further research to investigate temperature-injury among different populations and by the cause of injury is warranted.
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Affiliation(s)
- Vu Thuy Huong Le
- Division of Environmental Health Sciences, University of Minnesota Twin Cities, Minneapolis, Minnesota, USA
| | - Jesse D Berman
- Division of Environmental Health Sciences, University of Minnesota Twin Cities, Minneapolis, Minnesota, USA
| | - Elizabeth V Wattenberg
- Division of Environmental Health Sciences, University of Minnesota Twin Cities, Minneapolis, Minnesota, USA
| | - Toan Van Ngo
- Environmental Health Department, School of Preventive Medicine and Public Health, Hanoi Medical University, Hanoi, Viet Nam
| | - Quynh Anh Tran
- Environmental Health Department, School of Preventive Medicine and Public Health, Hanoi Medical University, Hanoi, Viet Nam
| | - Bruce H Alexander
- Division of Environmental Health Sciences, University of Minnesota Twin Cities, Minneapolis, Minnesota, USA
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Wang J, Li Z, Li G, Xu Y. Heat Hazard Control in High-Temperature Tunnels: Experimental Study of Coupled Cooling with Ventilation and Partial Insulation for Synergistic Geothermal Extraction. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:1941. [PMID: 36767305 PMCID: PMC9915152 DOI: 10.3390/ijerph20031941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 01/08/2023] [Accepted: 01/16/2023] [Indexed: 06/18/2023]
Abstract
The problem of heat hazard in tunnel engineering has seriously affected the normal work of personnel and machinery. After combining the heat hazard control method of controlling the energy source and blocking the energy transfer, a technical scheme of precise thermal insulation at the working face in concert with geothermal energy extraction is proposed, forming a coupled cooling method of ventilation and partial thermal insulation. By building a scaled model test platform, the temperature field of the working area was analyzed, and the effect of factors, such as with or without a thermal insulation layer, ventilation velocity, and surrounding rock temperature on the cooling limit, was discussed. The feasibility of extracting energy and enhancing cooling through the heat exchange layer was judged. The results show that the partial thermal insulation can effectively weaken the heat dissipation of the surrounding rock and enhance the ventilation and cooling effect, which can reduce the average ventilation limit temperature of the working area by 1.6 °C. The addition of the heat exchange layer can further improve the tunnel environment on the basis of partial insulation, making the cooling limit temperature drop by another 3.1 °C, and the heat exchange layer can work for one year to extract geothermal energy 4.5 × 108 J. The coupled cooling scheme of ventilation and partial thermal insulation is practical and useful, which can provide technical ideas for improving the thermal environment of the tunnel.
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Affiliation(s)
- Junjian Wang
- School of Resources and Safety Engineering, Central South University, 932 Lu Shan South Road, Changsha 410083, China
| | - Zijun Li
- School of Resources and Safety Engineering, Central South University, 932 Lu Shan South Road, Changsha 410083, China
| | - Gang Li
- Sinosteel Maanshan General Institute of Mining Research Co., Ltd., Maanshan 243000, China
| | - Yu Xu
- School of Resources and Safety Engineering, Central South University, 932 Lu Shan South Road, Changsha 410083, China
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Work-related stress and associated factors among health professionals in zone 1, Afar region, Ethiopia. Heliyon 2022; 8:e12167. [DOI: 10.1016/j.heliyon.2022.e12167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 07/19/2022] [Accepted: 11/29/2022] [Indexed: 12/14/2022] Open
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High Temperature and Its Association With Work-Related Injuries by Employment Status in South Korea, 2017-2018. J Occup Environ Med 2022; 64:e690-e694. [PMID: 35941745 DOI: 10.1097/jom.0000000000002667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
OBJECTIVE This study aimed to determine the association between maximum daily temperature and work-related injuries according to employment status in South Korea. METHODS Data on workers' compensation claims and daily maximum temperature between May 20 and September 10, 2017-2018, were collected and analyzed. The absolute temperature risk effect (ATR) was evaluated by comparing the risk effect at 2 temperatures (30°C vs 33°C) across all communities using 2-stage time-series analysis. RESULTS The association between high temperatures and work-related injuries was statistically significant in the construction sector (ATR, 1.129; 95% confidence interval [CI], 1.010-1.261). In addition, the findings of this study also demonstrated a higher risk effect among nonpermanent workers (ATR, 1.109; 95% CI, 1.013-1.214) at 33°C versus 30°C when compared with permanent workers (ATR, 0.963; 95% CI, 0.891-1.041). CONCLUSIONS This study found a significant association between high temperatures and work-related injuries among nonpermanent workers in South Korea.
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Karthick S, Kermanshachi S, Pamidimukkala A, Namian M. A Review of Construction Workforce Health Challenges and Strategies in Extreme Weather Conditions. INTERNATIONAL JOURNAL OF OCCUPATIONAL SAFETY AND ERGONOMICS 2022; 29:773-784. [PMID: 35622383 DOI: 10.1080/10803548.2022.2082138] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
AbstractConstruction sites continue to operate despite inclement weather, exposing workers to unpleasant working circumstances that can lead to various physical and mental health challenges. A thorough literature review yielded 21 challenges for hot weather conditions such as heat stroke, kidney disease, heat cramps, anxiety, depression and 20 challenges for cold weather conditions like asthma, frostbite, Musculo-Skeletal disorders, hallucination. Workers vulnerable to hot and cold weather based on demographic characteristics were identified. The study also provides 27 strategies to address the challenges experienced in hot and cold weather conditions. Some of these include ensuring that workers stay hydrated, scheduling sufficient rest periods, and allowing workers to self-pace. The results of this study will help construction decision-makers and project managers understand the difficulties faced by a field workforce who labors in extreme working conditions on construction sites and will facilitate adoption of strategies that can prevent weather-related physical and mental health problems.
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Affiliation(s)
- Sanjgna Karthick
- Ph.D. Student, Department of Civil Engineering, University of Texas at Arlington, Arlington, 76019; E-mail:
| | - Sharareh Kermanshachi
- Associate Professor, Department of Civil Engineering, University of Texas at Arlington, Arlington, 76019; E-mail:
| | - Apurva Pamidimukkala
- Ph.D. Student, Department of Civil Engineering, University of Texas at Arlington, Arlington, 76019; E-mail:
| | - Mostafa Namian
- Assistant Professor, Department of Construction Management, East Carolina University
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Glaser J, Wegman DH, Arias-Monge E, Pacheco-Zenteno F, Prince H, Chavarria D, Martinez-Cuadra WJ, Jakobsson K, Hansson E, Lucas RAI, Weiss I, Wesseling C. Workplace Intervention for Heat Stress: Essential Elements of Design, Implementation, and Assessment. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19073779. [PMID: 35409463 PMCID: PMC8998134 DOI: 10.3390/ijerph19073779] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/24/2022] [Accepted: 03/14/2022] [Indexed: 11/16/2022]
Abstract
Heat stress is associated with numerous health effects that potentially harm workers, especially in a warming world. This investigation occurred in a setting where laborers are confronted with occupational heat stress from physically demanding work in high environmental temperatures. Collaboration with a major Nicaraguan sugarcane producer offered the opportunity to study interventions to prevent occupational heat-stress-related kidney disease. Two aims for this study of a rest-shade-water intervention program were: (1) describe the evolving intervention, summarize findings that motivated proposed improvements, assess impact of those improvements, and identify challenges to successful implementation and (2) extract primary lessons learned about intervention research that have both general relevance to investigations of work-related disease prevention and specific relevance to this setting. The learning curve for the various stakeholders as well as the barriers to success demonstrate that effectiveness of an intervention cannot be adequately assessed without considerations of implementation. Designing, effectively implementing, and assessing both health impacts and implementation quality is a resource-intensive endeavor requiring a transdisciplinary approach. Both general and specific lessons learned are presented for decisions on study design and study elements, implementation assessment, and management engagement in understanding how productivity and health can be successfully balanced and for building effective communication between investigators and all levels of management.
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Affiliation(s)
- Jason Glaser
- La Isla Network, 2219 California Ave NW, #52, Washington, DC 20008, USA; (E.A.-M.); (W.J.M.-C.); (K.J.); (E.H.); (R.A.I.L.); (I.W.); (C.W.)
- Correspondence: (J.G.); (D.H.W.); Tel.: +1-(347)-585-7465 (J.G.); +1-(617)-921-1506 (D.H.W.)
| | - David H. Wegman
- La Isla Network, 2219 California Ave NW, #52, Washington, DC 20008, USA; (E.A.-M.); (W.J.M.-C.); (K.J.); (E.H.); (R.A.I.L.); (I.W.); (C.W.)
- University of Massachusetts Lowell, Lowell, MA 01854, USA
- Correspondence: (J.G.); (D.H.W.); Tel.: +1-(347)-585-7465 (J.G.); +1-(617)-921-1506 (D.H.W.)
| | - Esteban Arias-Monge
- La Isla Network, 2219 California Ave NW, #52, Washington, DC 20008, USA; (E.A.-M.); (W.J.M.-C.); (K.J.); (E.H.); (R.A.I.L.); (I.W.); (C.W.)
- Unidad de Gestión Ambiental y Seguridad Laboral, Instituto Tecnológico de Costa Rica, 15th Street, 14th Avenue, Cartago 159-7050, Costa Rica
| | - Felipe Pacheco-Zenteno
- School of Public Health and Community Medicine, Sahlgrenska Academy, University of Gothenburg, 405 30 Göteborg, Sweden;
| | - Heath Prince
- Ray Marshall Center, LBJ School of Public Affairs, University of Texas at Austin, 3001 Lake Austin Blvd., Ste. 3.200, Austin, TX 78703, USA;
| | - Denis Chavarria
- Occupational Health, Ingenio San Antonio, Chinandega 26100, Nicaragua;
| | - William Jose Martinez-Cuadra
- La Isla Network, 2219 California Ave NW, #52, Washington, DC 20008, USA; (E.A.-M.); (W.J.M.-C.); (K.J.); (E.H.); (R.A.I.L.); (I.W.); (C.W.)
| | - Kristina Jakobsson
- La Isla Network, 2219 California Ave NW, #52, Washington, DC 20008, USA; (E.A.-M.); (W.J.M.-C.); (K.J.); (E.H.); (R.A.I.L.); (I.W.); (C.W.)
- School of Public Health and Community Medicine, Sahlgrenska Academy, University of Gothenburg, 405 30 Göteborg, Sweden;
- Occupational and Environmental Medicine, Sahlgrenska University Hospital, 405 30 Göteborg, Sweden
| | - Erik Hansson
- La Isla Network, 2219 California Ave NW, #52, Washington, DC 20008, USA; (E.A.-M.); (W.J.M.-C.); (K.J.); (E.H.); (R.A.I.L.); (I.W.); (C.W.)
- School of Public Health and Community Medicine, Sahlgrenska Academy, University of Gothenburg, 405 30 Göteborg, Sweden;
| | - Rebekah A. I. Lucas
- La Isla Network, 2219 California Ave NW, #52, Washington, DC 20008, USA; (E.A.-M.); (W.J.M.-C.); (K.J.); (E.H.); (R.A.I.L.); (I.W.); (C.W.)
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Ilana Weiss
- La Isla Network, 2219 California Ave NW, #52, Washington, DC 20008, USA; (E.A.-M.); (W.J.M.-C.); (K.J.); (E.H.); (R.A.I.L.); (I.W.); (C.W.)
| | - Catharina Wesseling
- La Isla Network, 2219 California Ave NW, #52, Washington, DC 20008, USA; (E.A.-M.); (W.J.M.-C.); (K.J.); (E.H.); (R.A.I.L.); (I.W.); (C.W.)
- Unit of Occupational Medicine, Institute of Environmental Medicine, Karolinska Institutet, Solnavägen 4, 113 65 Stockholm, Sweden
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Lee J, Kim UJ, Lee Y, Han E, Ham S, Lee W, Choi WJ, Kang SK. Sunlight exposure and eye disorders in an economically active population: data from the KNHANES 2008-2012. Ann Occup Environ Med 2021; 33:e24. [PMID: 34754485 PMCID: PMC8367748 DOI: 10.35371/aoem.2021.33.e24] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 07/11/2021] [Accepted: 07/12/2021] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Sunlight exposure is a major risk factor for eye disorders. Most outdoor workers cannot avoid sunlight exposure. This study aimed to analyze the relationship between outdoor sunlight exposure and eye disorders in an economically active population. METHODS This study analyzed the 2008-2012 Korea National Health and Nutritional Examination Survey data. Sunlight exposure was categorized as < 5 hours and > 5 hours. We also analyzed the dose-dependent relationship between exposure to sunlight and eye disorders (cataracts, pterygium, and age-related macular degeneration [AMD]) using data from 2010 to 2012 by subdividing the exposure groups into < 2 hours, 2-5 hours, and ≥ 5 hours. Eye disorders were diagnosed by an ophthalmologist. The study participants were stratified by sex, and the results were analyzed using the χ2 test and multiple logistic regression analysis. RESULTS In the female group, the odds ratio of pterygium in the high-level sunlight exposure group was 1.47 (95% confidence interval [CI]: 1.15-1.89). Regarding AMD, the odds ratios were 1.42 (95% CI: 1.16-1.73), 1.33 (95% CI: 1.03-1.73), and 1.58 (95% CI: 1.15-2.16) in the total, male, and female groups, respectively. Analysis of the dose-response relationship revealed that the odds ratios of pterygium in the high-level sunlight exposure subgroups of the total and female groups were 1.62 (95% CI: 1.25-2.08) and 2.00 (95% CI: 1.39-2.88), respectively. CONCLUSIONS This study demonstrated a relationship between sunlight exposure and eye disorders in an economically active population. Women were found to be especially vulnerable to pterygium. However, additional prospective studies to clarify the pathophysiology of pterygium are needed.
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Affiliation(s)
- Junhyeong Lee
- Department of Occupational and Environmental Medicine, Gil Medical Center, Incheon, Korea
- Graduate School, Gachon University, Incheon, Korea
| | - Ui-Jin Kim
- Department of Occupational and Environmental Medicine, Gil Medical Center, Incheon, Korea
- Graduate School, Gachon University, Incheon, Korea
| | - Yongho Lee
- Department of Occupational and Environmental Medicine, Gil Medical Center, Incheon, Korea
- Graduate School, Gachon University, Incheon, Korea
| | - Eunseun Han
- Department of Occupational and Environmental Medicine, Gil Medical Center, Incheon, Korea
- Graduate School, Gachon University, Incheon, Korea
| | - Seunghon Ham
- Department of Occupational and Environmental Medicine, Gil Medical Center, Incheon, Korea
- Graduate School, Gachon University, Incheon, Korea
- Department of Occupational and Environmental Medicine, College of Medicine, Gachon University, Incheon, Korea
| | - Wanhyung Lee
- Department of Occupational and Environmental Medicine, Gil Medical Center, Incheon, Korea
- Graduate School, Gachon University, Incheon, Korea
- Department of Occupational and Environmental Medicine, College of Medicine, Gachon University, Incheon, Korea
| | - Won-Jun Choi
- Department of Occupational and Environmental Medicine, Gil Medical Center, Incheon, Korea
- Graduate School, Gachon University, Incheon, Korea
- Department of Occupational and Environmental Medicine, College of Medicine, Gachon University, Incheon, Korea
| | - Seong-Kyu Kang
- Department of Occupational and Environmental Medicine, Gil Medical Center, Incheon, Korea
- Graduate School, Gachon University, Incheon, Korea
- Department of Occupational and Environmental Medicine, College of Medicine, Gachon University, Incheon, Korea
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Chen D, Lu H, Zhang S, Yin J, Liu X, Zhang Y, Dai B, Li X, Ding G. The association between extreme temperature and pulmonary tuberculosis in Shandong Province, China, 2005-2016: a mixed method evaluation. BMC Infect Dis 2021; 21:402. [PMID: 33933024 PMCID: PMC8088045 DOI: 10.1186/s12879-021-06116-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 04/20/2021] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND The effects of extreme temperature on infectious diseases are complex and far-reaching. There are few studies to access the relationship of pulmonary tuberculosis (PTB) with extreme temperature. The study aimed to identify whether there was association between extreme temperature and the reported morbidity of PTB in Shandong Province, China, from 2005 to 2016. METHODS A generalized additive model (GAM) was firstly conducted to evaluate the relationship between daily reported incidence rate of PTB and extreme temperature events in the prefecture-level cities. Then, the effect estimates were pooled using meta-analysis at the provincial level. The fixed-effect model or random-effect model was selected based on the result of heterogeneity test. RESULTS Among the 446,016 PTB reported cases, the majority of reported cases occurred in spring. The higher reported incidence rate areas were located in Liaocheng, Taian, Linyi and Heze. Extreme low temperature had an impact on the reported incidence of PTB in only one prefecture-level city, i.e., Binzhou (RR = 0.903, 95% CI: 0.817-0.999). While, extreme high temperature was found to have a positive effect on reported morbidity of PTB in Binzhou (RR = 0.924, 95% CI: 0.856-0.997) and Weihai (RR = 0.910, 95% CI: 0.843-0.982). Meta-analysis showed that extreme high temperature was associated with a decreased risk of PTB (RR = 0.982, 95% CI: 0.966-0.998). However, extreme low temperature was no relationship with the reported incidence of PTB. CONCLUSION Our findings are suggested that extreme high temperature has significantly decreased the risk of PTB at the provincial levels. The findings have implications for developing strategies to response to climate change.
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Affiliation(s)
- Dongzhen Chen
- Department of Epidemiology, School of Public Health, Shandong First Medical University & Shandong Academy of Medical Sciences, No.619 Changcheng Road, Taian, 271016, Shandong Province, China
| | - Hua Lu
- Taian Centers for Diseases Prevention Control, Taian, 271000, Shandong Province, China
| | - Shengyang Zhang
- Shandong Center for Disease Control and Prevention, Jinan, 250014, Shandong Province, China
| | - Jia Yin
- Department of Epidemiology, School of Public Health, Shandong First Medical University & Shandong Academy of Medical Sciences, No.619 Changcheng Road, Taian, 271016, Shandong Province, China
| | - Xuena Liu
- Department of Epidemiology, School of Public Health, Shandong First Medical University & Shandong Academy of Medical Sciences, No.619 Changcheng Road, Taian, 271016, Shandong Province, China
| | - Yixin Zhang
- Shandong Center for Disease Control and Prevention, Jinan, 250014, Shandong Province, China
| | - Bingqin Dai
- Shandong Center for Disease Control and Prevention, Jinan, 250014, Shandong Province, China
| | - Xiaomei Li
- Department of Epidemiology, School of Public Health, Shandong First Medical University & Shandong Academy of Medical Sciences, No.619 Changcheng Road, Taian, 271016, Shandong Province, China.
| | - Guoyong Ding
- Department of Epidemiology, School of Public Health, Shandong First Medical University & Shandong Academy of Medical Sciences, No.619 Changcheng Road, Taian, 271016, Shandong Province, China.
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Taylor NAS, Lee JY, Kim S, Notley SR. Physiological interactions with personal-protective clothing, physically demanding work and global warming: An Asia-Pacific perspective. J Therm Biol 2021; 97:102858. [PMID: 33863427 DOI: 10.1016/j.jtherbio.2021.102858] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/07/2021] [Accepted: 01/13/2021] [Indexed: 01/03/2023]
Abstract
The Asia-Pacific contains over half of the world's population, 21 countries have a Gross Domestic Product <25% of the world's largest economy, many countries have tropical climates and all suffer the impact of global warming. That 'perfect storm' exacerbates the risk of occupational heat illness, yet first responders must perform physically demanding work wearing personal-protective clothing and equipment. Unfortunately, the Eurocentric emphasis of past research has sometimes reduced its applicability to other ethnic groups. To redress that imbalance, relevant contemporary research has been reviewed, to which has been added information applicable to people of Asian, Melanesian and Polynesian ancestry. An epidemiological triad is used to identify the causal agents and host factors of work intolerance within hot-humid climates, commencing with the size dependency of resting metabolism and heat production accompanying load carriage, followed by a progression from the impact of single-layered clothing through to encapsulating ensembles. A morphological hypothesis is presented to account for inter-individual differences in heat production and heat loss, which seems to explain apparent ethnic- and gender-related differences in thermoregulation, at least within thermally compensable states. The mechanisms underlying work intolerance, cardiovascular insufficiency and heat illness are reviewed, along with epidemiological data from the Asia-Pacific. Finally, evidence-based preventative and treatment strategies are presented and updated concerning moisture-management fabrics and barriers, dehydration, pre- and post-exercise cooling, and heat adaptation. An extensive reference list is provided, with >25 recommendations enabling physiologists, occupational health specialists, policy makers, purchasing officers and manufacturers to rapidly extract interpretative outcomes pertinent to the Asia-Pacific.
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Affiliation(s)
- Nigel A S Taylor
- Research Institute of Human Ecology, College of Human Ecology, Seoul National University, Seoul, Republic of Korea.
| | - Joo-Young Lee
- Research Institute of Human Ecology, College of Human Ecology, Seoul National University, Seoul, Republic of Korea
| | - Siyeon Kim
- Human Convergence Technology R&D Department, Korea Institute of Industrial Technology, Ansan, Republic of Korea
| | - Sean R Notley
- School of Human Kinetics, University of Ottawa, Ottawa, Canada
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Prediction of Health-Related Leave Days among Workers in the Energy Sector by Means of Genetic Algorithms. ENERGIES 2020. [DOI: 10.3390/en13102475] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this research, a model is proposed for predicting the number of days absent from work due to sick or health-related leave among workers in the industry sector, according to ergonomic, social and work-related factors. It employs selected microdata from the Sixth European Working Conditions Survey (EWCS) and combines a genetic algorithm with Multivariate Adaptive Regression Splines (MARS). The most relevant explanatory variables identified by the model can be included in the following categories: ergonomics, psychosocial factors, working conditions and personal data and physiological characteristics. These categories are interrelated, and it is difficult to establish boundaries between them. Any managing program has to act on factors that affect the employees’ general health status, process design, workplace environment, ergonomics and psychosocial working context, among others, to achieve success. This has an extensive field of application in the energy sector.
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