Occupational Health and Industrial Hygiene Commons^™

Norm Dust Intake: Comparison Of Personal Air Sampling And Bioassays, Gregory S. Hewson, Martin I. Ralph, Marcus Cattani

Research outputs 2022 to 2026

Intake of naturally occurring radioactive materials (NORM), particularly the inhalation of thorium-bearing dust in mineral sand operations, has traditionally been assessed via personal air sampling (PAS). However, data from bioassay studies suggest that the actual intake determined via PAS may be underestimated. This review integrates thorium intake estimates derived from historical bioassay datasets, such as urine, faeces, lung counting, and thoron-in-breath tests, with historical PAS data. The findings indicated that bioassay-based predictions of intake were consistently greater, with mean bioassay-to-PAS intake ratios ranging from 2.6 to 4.2. The contributing factors to this discrepancy include biokinetic model uncertainties, potential dust sampler …

Aviation Accident Investigation Analysis Methodologies Used By 12 Government Safety Investigation Authorities, Kym Bills, Leesa Costello, Marcus Cattani

Research outputs 2022 to 2026

Introduction: Leading government Safety Investigation Authorities (SIAs) that investigate major aviation accidents are members of the International Transportation Safety Association (ITSA). Investigation analysis methodology details are rarely included on SIA websites, in final accident reports, shared with peers, or specified by the International Civil Aviation Organization (ICAO). Some ‘New View’ safety researchers assume SIAs don't use systemic methodologies and that accident investigation has little value. Because of the sensitivity of SIA work and need to prioritize safety value from available investigation funding, there has been little academic research on choice and use of investigation analysis methodologies to address these issues …

Alara+: Summit On Radiation And Orthopedic Risks In Fluoroscopic Laboratories: Endorsed By Acc, Acvp, Ase, Hrs, Scai, Sir, Snis, Svin, And Svs, Arash Salavitabar, Amit N. Vora, Dorothea Altschul, J. Fritz Angle, Chelsea Ballinger, Andrew Bojanowski, Anna E. Bortnick, Kyle Bugg, Emily Carpenter, Robert E. Foster, Joanna Ghobrial, Matthew Glogoza, Atul Gupta, James B. Hermiller, A. Kyle Jones, Summer L. Kaplan, Steven J. Kraus, Omar Khalique, Andrea Klein, Nick Morse, Preethi Ramchand, David G. Rizik, Lucy M. Safi, Cheryl C. Schultz, Kamala P. Tamirisa, R. Jay Widmer, Kristi Wilson, Jonathan X. Fang, Arnold Seto, Robert F. Riley

Department of Neurosurgery Faculty Papers

Occupational radiation exposure has a clear association with long-term health effects and has a particular impact on women, trainees, and supporting staff. There is a reliance on limited, traditional radiation protection and nonergonomic equipment, which carries associated orthopedic injury rates with adverse impacts on both individual career trajectories and health systems, and with significant challenges to widespread implementation of enhanced radiation protection devices. During the 2025 Society for Cardiovascular Angiography & Interventions Scientific Sessions in Washington, DC, a multidisciplinary Think Tank summit was convened and included representatives from multiple stakeholders, including other professional societies, advocacy groups, and industry partners. The …

The Effect Of A Superficial Biochar Layer On Soil Radon Exhalation: A Preliminary Investigation Into A Passive Residential Radon Mitigation Strategy, Nicholas Richmond Nelson

Honors Theses

Residential radon exposure is a leading cause of lung cancer worldwide, yet home testing and mitigation remain infrequent. Active mitigation systems can be costly, and existing passive radon-resistant construction techniques, while cost-effective, are not always sufficient to reduce indoor radon to below the recommended EPA threshold of 4.0 pCi/L (148 Bq/m3). This initial work examines the potential for a superficial biochar layer placed beneath a house foundation during construction to reduce soil radon exhalation and subsequent indoor radon concentration. Biochar is also being explored as an admixture to concrete, and this study investigates radon transmission through concrete with varying biochar …

Intimate Partner Violence Experience, Support Seeking And Coping Strategies Among Pregnant Women In Southwestern Uganda, Eve Katushabe, John Baptist Asiimwe, John Bosco Ndinawe, Editor Abeneitwe, Agnes Katusiime, Gladys Nakidde, Vincent Batwala

School of Nursing & Midwifery, East Africa

Intimate partner violence (IPV) during pregnancy remains a global health challenge. This study aimed to explore pregnant women’s experiences of IPV, support seeking, and coping strategies in Southwestern Uganda. Pregnant women who had experienced IPV during pregnancy were purposively selected and completed in-depth interviews, with data saturation reached after 25 participants. Guided by the feminist theory, data were analyzed deductively and inductively using thematic analysis. Participating pregnant women were exposed to physical violence (e.g., the gravid abdomen being stepped on), psychological violence (e.g., verbal abuse), sexual violence (e.g., being forced into uncomfortable sexual positions), and financial control and manipulation (e.g., …

Reduced Physical Activity During Submarine Deployment: Health And Performance Consequences And Feasible Countermeasures—A Narrative Review, Benjamin J.C. Kirk, Georgios Mavropalias, Anthony J. Blazevich, Jodie L. Cochrane Wilkie, Aus Molan, Kazunori Nosaka

Research outputs 2022 to 2026

Objectives: Submarine environments pose unique challenges to maintaining physical activity due to space constraints, operational demands, and prolonged confinement. This review aims to synthesize existing literature on the health and performance consequences of reduced physical activity in submarine personnel and to examine feasible strategies to mitigate these effects during deployment. Methods: A narrative overview methodology was adopted, with peer-reviewed studies identified from PubMed, Scopus, and Google Scholar. Articles examining physical activity patterns, health outcomes, and exercise or movement-based interventions in submarine environments and comparable confined operational settings were included. Results: Submarine deployments are consistently associated with reduced physical activity, low …

A Fishy Situation: Hand Infection Due To Mycobacterium Marinum Mistaken For Giant Cell Tumor, Alynna Knaub, Dylan Baker, Jennifer Hanrahan

Department of Medicine Faculty Publications

Mycobacterium marinum is an acid-fast bacterium (AFB) associated with exposure to water and aquatic species. When inoculated, infection can result in nodular cutaneous lesions. In the absence of detailed history or culture data, these nodular skin lesions can be mistaken for noninfectious orthopedic conditions. We present a case of M. marinum mistaken for a giant cell tumor. This case illustrates the overlap in these conditions, as well as the utility of QuantiFERON Gold testing to provide supportive evidence for the diagnosis of Mycobacterium marinum.

Blocking Interleukin 33 Reduces Joint, Systemic, And Lung Inflammatory Responses In The Combined Collagen-Induced Arthritis-Inhalant Endotoxin Exposure Model, Jill A. Poole, Jacob L. Larsen, Geoffrey M. Thiele, Todd A. Wyatt, Amy J. Nelson, Michael J. Duryee, Angela Gleason, Oliver W. Schanze, Aaron D. Schwab, John D. Dickinson, Deanna Mosley, Michael Lush, Han-Jun Wang, E. Suzanne Cohen, Bryant England, Ted R. Mikuls

Journal Articles: Environmental, Agricultural & Occupational Health

Therapies capable of resolving rheumatoid arthritis (RA)-associated lung disease, particularly in the setting of environmental exposures, are lacking. This study sought to determine whether blocking interleukin (IL)-33 in a murine model of RA-associated lung disease induced by combined collagen-induced arthritis (CIA) and repeated inhalant lipopolysaccharide (LPS) exposures could be advantageous. Arthritis prone male DBA/1J mice received CIA (vs saline) injections (days 1 and 21) plus intranasal LPS (100 ng) or saline daily for 4 weeks and were subsequently treated with 5 doses of anti-IL-33 (10 mg/kg) or isotype over 11 days. Anti-IL-33 therapy significantly (P < .05) mitigated several CIA+LPS-induced effects. Anti-IL-33 reduced arthritis inflammatory score by 76% and serum acute phase reactant pentraxin-2 by 70% and reversed weight loss induced by CIA+LPS coexposure. Anti-IL-33 reduced CIA+LPS-induced antimalondialdehyde acetaldehyde but not anticitrullinated autoantibodies in serum and reduced serum levels of inflammatory mediators. Lung cell infiltrates induced by coexposure, including neutrophils, activated lung macrophages, transitional monocytes-macrophages, monocytic-like cells, and dendritic cells, were reduced with anti-IL-33. Anti-IL-33 also reduced CIA+LPS-induced lung levels of chemokines involved in monocyte-macrophage recruitment and fibrotic/repair mediators collagen deposition, IL-33 expression, inflammatory CC motif chemokine receptor 2

Étude Multidisciplinaire Du Confort Des Bouchons D'Oreilles : Vers Une Protection Auditive Efficace En Milieu De Travail, Olivier Doutres, Franck Sgard, Alessia Negrini, Alain Berry, Chantal Gauvin

États de la question, rapports d’expertise et revues de littérature

L'utilisation de protecteurs auditifs individuels (PICB), tels que les casques ou les bouchons d’oreilles souvent recommandés comme mesure temporaire, reste souvent le seul moyen d'assurer la protection des travailleuses et travailleurs exposés quotidiennement à des niveaux de bruit dangereux. Actuellement, le choix d'un PICB est principalement basé sur des considérations liées à l’atténuation acoustique qu’il offre (et mesurée en laboratoire par des organisations certifiées), et/ou à des caractéristiques de l'environnement de travail, telles que la chaleur, l'hygiène et la compatibilité avec d'autres équipements de protection individuelle (EPI). Le port de PICB est connu pour générer de nombreux inconforts qui peuvent …

Managing Complexity: Manager-Stakeholder Communication, Relational Dynamics, And The Dual Nature Of Rtw Communication, H. Bertolini, Marc Corbière, Alessia Negrini, Nadine Larivière, Patrizia Villotti, Dominic Prévost, Meryl Caiada, Jason Amorim, Fergal O'Hagan

Études primaires

Purpose

The return to work (RTW) process of worker absent due to common mental disorders (CMD) or musculoskeletal disorders (MSD) represents a complex challenge that involves multiple stakeholders. The aim of this study was to examine how managers perceive the factors that facilitate or hinder communication with other stakeholders during the RTW process.

This qualitative study was based on four focus groups conducted in Canada (Quebec and Ontario) with 18 managers.

Thematic analysis identified five themes related to facilitators and seven themes related to communication obstacles. Among the main facilitators, trust, clarity, and collaboration emerged as key elements …

Lumbosacral Orthosis Can Improve Postural Control In Older Adults With Chronic Low Back Pain, Régis M.-L. D'Assomption, Christian Lariviere, Hakim Mecheri, Suzy Ngomo, Rubens A. Da Silva

Études primaires

Background

Older adults with chronic low back pain may report poor postural control and increased fall risks. Possible key mechanisms are altered lumbar spine proprioception, stiffness and mobility, which could be enhanced through lumbar stabilization approaches. The purpose of this study was thus to evaluate the immediate effects of two lumbar stabilization approaches on postural control measures, namely a lumbosacral orthosis and the abdominal drawing-in maneuver.

Methods

57 older adults (> 65 yrs): 22 with chronic low back pain and 35 healthy controls performed two trials (30 s) of a semi-tandem balance task on a force platform, while three experimental …

If Only Pickups And Vans Could Fly: Vehicle Maintenance And The Challenge Of Safely Lifting Large Vehicles On A Two-Post Lift, Damien Burlet-Vienney, Sylvie Beaugrand, Maud Gonella, Bertrand Galy, Élise Ledoux

Études primaires

The use of automotive lifts requires mechanics to work under or near a multi-ton load. Based on consultation with stakeholders, pickups and vans appear to pose problems when raised using two-post above-ground lifts (2PAG lifts), the most common type of automotive lift in garages. The aim of this study is therefore to highlight the work activity performed by mechanics when raising pickups and vans on 2PAG lifts and to describe the factors they take into account to ensure vehicle stability. Data collection took place under actual conditions in five garages. A total of 108 lifting situations were filmed and analyzed, …

Identification Of Culturable Moulds, Audrey Bernèche-D'Amours, Thi Thanh Tam Nguyen, Delphine Lanoie

Microbiologiques

Cette méthode est utilisée pour identifier au genre ou à l’espèce des moisissures cultivées à partir d’échantillons d’air, de surface ou de matrices solides ou liquides. Après avoir isolé une souche de moisissure en culture pure, différentes techniques peuvent être utilisées : l’observation des caractères macroscopiques et microscopiques des colonies et leur comparaison à des clés d’identification de référence, la spectrométrie de masse utilisant la technologie MALDI-TOF et le séquençage de type Sanger ciblant différents loci génétiques. Les identifications obtenues par l’une, plusieurs ou l’ensemble de ces techniques sont ensuite interprétées pour rapporter une identification finale.

Abstract

This method is …

Thorium Lung Burdens Of Norm Workers Revisited, Gregory S. Hewson, Martin I. Ralph, Marcus Cattani

Research outputs 2022 to 2026

Historical thorium bioassay data collected from Australian mine workers in the 1990s, including in vivo lung counting and thoron-in-breath (TIB) measurements, were re-evaluated using current dosimetric and biokinetic models. Revised daily thorium intakes from bioassay were compared with previous estimates to assess changes in the dose profile and potential implications for contemporary operations. Reanalysis revealed lower estimates of annual dose, including the number of workers assessed as exceeding 20 mSv. However, it was found that intakes derived from industry personal air sampling (PAS) underestimated intake by up to three-fold. This study determined that sensitive bioassay techniques, such as TIB using …

The Basis For Recommending The Selection Of Samplers In Determining Occupational Exposures To Aerosols, Martin Harper, Pieter Bertier, Marcus Cattani, Karen Galea, Darrah Sleeth, Steven Verpaele

Research outputs 2022 to 2026

Measurements are considered to be the basis of exposure assessments used to determine risks to workers. Inhalation exposure poses the greatest risk for most airborne chemicals, and measurements are based on collecting (sampling) and analyzing air samples. Samplers have been developed for more than 120 years. Each new design has been intended to address flaws perceived in earlier designs. Users are faced with a varied array of samplers from which to choose. Comparisons are difficult to make because tests of sampler performance were not standardized until recently and have not been applied consistently. The existing large body of work does …

Exposition Professionnelle Aux Agents D'Infections Nosocomiales En Milieux De Soins : Mieux Comprendre Et Contrôler La Voie De Propagation Par Aérosols, Caroline Duchaine, Yves Longtin, Marc Veillette, Adriana Larotta, Bianka Paquet Bolduc

États de la question, rapports d’expertise et revues de littérature

Ce projet, mené dans le contexte de la pandémie de COVID-19, visait à mieux comprendre les risques liés à la présence de virus et de bactéries dans l’air des milieux de soins et à identifier les meilleures façons de protéger le personnel de la santé. Ce projet s’est articulé autour de trois grands volets de recherche complémentaires, menés en milieux réels et en laboratoire. Le premier volet visait à documenter la présence de virus comme le SARS-CoV-2 (responsable de la COVID-19), l’influenza ou le norovirus dans l’air d’hôpitaux et de centres de soins de longue durée. Des prélèvements dans les …

Établissement De L'Équivalence De La Méthode Irsst 381 Pour La Mesure De L'Exposition Professionnelle Aux Fumées D'Asphalte En Conformité Avec La Nouvelle Valeur D'Exposition Admissible, Simon Aubin, Ousmane Bangoura, Corina Tue

États de la question, rapports d’expertise et revues de littérature

Depuis quelques décennies, la valeur d’exposition admissible consiste en une valeur d’exposition moyenne pondérée (VEMP) des fumées d’asphalte est de 5 mg/m³, prélevée en fraction « particules totales », pour laquelle une mesure gravimétrique non spécifique est préconisée. (Règlement sur la santé et la sécurité du travail) Une nouvelle VEMP entre en vigueur en mars 2026 avec la valeur et l’expression suivante : 1,5 mg/m³ [particules et vapeur exprimée en fraction soluble dans le benzène ou son équivalent] prélevé en fraction « particules totales » (Pt). La méthode préconisée pour soutenir cette VEMP est la …

Les Répercussions Des Changements Climatiques Sur La Sst : État Des Lieux Et Pistes D'Action, Sophie De Serres, Alain Marchand

États de la question, rapports d’expertise et revues de littérature

Cet état des lieux expose les répercussions multidimensionnelles des changements climatiques (CC) sur la santé et la sécurité du travail (SST), en se concentrant sur les contextes nord-américain et européen. L'augmentation de la température moyenne mondiale, qui atteint désormais +1,2 °C par rapport à l'ère préindustrielle, transforme les conditions de travail et exacerbe les dangers professionnels existants. Le stress thermique induit par la chaleur excessive provoque des pathologies allant de l'épuisement au coup de chaleur mortel, tout en dégradant la vigilance et en augmentant le risque de blessures traumatiques. Au-delà des atteintes physiques, les CC aggravent les risques psychosociaux, engendrant …

Proactive Safety Reasoning In Human-Robot Collaboration In Disassembly Through Llm-Augmented Stpa And Fmea, Morteza Jalali Alenjareghi, Fardin Ghorbani, Samira Keivanpour, Yuvin Adnarain Chinniah, Sabrina Jocelyn

Études primaires

Disassembly tasks in human–robot collaboration (HRC) environments present safety challenges due to hazardous materials, control system variability, and physically demanding operator tasks. To address these challenges, we propose an AI-augmented risk assessment framework integrating System-Theoretic Process Analysis (STPA) and Failure Mode and Effects Analysis (FMEA). This framework is implemented in four configurations: Term Frequency– Inverse Document Frequency (TF-IDF), Fine-tuned Large Language Models (LLMs), Retrieval-Augmented Generation (RAG), and RAG with a structured Knowledge Graph (KG) built from safety standards. The system supports real-time, standards-compliant safety reasoning by generating interpretable, context-specific recommendations. We evaluate these configurations across GPT-3.5 TURBO, GPT-4o, GPT-4.1, and …

A Zinc Chelate Of Lysine/Glutamic Acid Reduces Alcohol-Induced Ciliary Dysfunction, Emily Do, Daren L. Knoell, Christopher Bauer, Deanna Mosley, Deandra R. Smith, Derrick R. Samuelson, Todd A. Wyatt

Journal Articles: Environmental, Agricultural & Occupational Health

Alcohol misuse is a known risk factor for pneumonia, and up to 50% of individuals who misuse alcohol are zinc deficient. Chronic alcohol misuse can lead to alcohol-induced ciliary dysfunction (AICD), preventing effective mucociliary clearance and protection against lung infection. Because zinc salts fail to alter AICD, we hypothesized a form of zinc (Zinpro Zinc LG) with enhanced cell uptake would protect against AICD. Human and mouse airway epithelial cells were treated with 50 mM ethanol for 1-24 h followed by the ciliostimulatory agents. Cilia beat frequency (CBF) and cAMP-dependent protein kinase (PKA) activity were assayed. Cyclic AMP or beta …

Effet Sur La Qualité De L'Air Et La Santé Des Travailleurs Et Travailleuses Dans Les Logements Alternatifs Des Poules Pondeuses, Magali-Wen St-Germain, Valérie Létourneau, Marc Veillette, Perrine Cruaud, Candice Lemaille, Kim Robitaille, Éloïse Denis, Araceli Dalila Larios Martínez, Sébastien Fournel, Stéphane Godbout, Geneviève Dion, Andréanne Côté, Laurianne Gratton, Martine Boulianne, Caroline Duchaine

Rapports de recherche scientifique

Les oeufs de poules en liberté et les oeufs provenant « d’élevage confort » sont maintenant des produits communs dans les marchés alimentaires du Québec. Cette nouvelle variété de produits est le résultat de l’évolution des pratiques afin de concilier le bien-être des poules pondeuses et les besoins de l’industrie. En effet, d’ici l’année 2036, les logements conventionnels pour poules pondeuses (logements grillagés pour des petits groupes de poules) seront graduellement remplacés par des logements alternatifs. Les logements alternatifs pour poules pondeuses regroupent les colonies enrichies et les logements sans cages (sur plancher ou en volière). Ils ont en commun …

Évaluation De L’Exposition Aux Microorganismes Et Appréciation Du Risque Sanitaire Des Chauffeurs De Camion Et Des Éboueurs Attitrés Au Transport Des Matières Résiduelles Et Des Déchets, Geneviève Marchand, Loïc Wingert, Maximilien Debia, Carla Viegas, Susana Viegas, Liliana Caetano, Magdalena Twarużek, Nancy Lacombe, François Gouin, Delphine Lanoie, Isabelle Valois, Robert Kosicki, Marta Dias, Ewelina Soszczyńska, Julien Trépanier, Tam Nguyen, Fabiola Salambanga, Noémie Gervais

Rapports de recherche scientifique

La gestion des déchets au Québec repose sur la collecte sélective pour revaloriser les matières résiduelles et réduire l’enfouissement. Les travailleurs du secteur sont exposés aux bioaérosols contenant microorganismes et allergènes. Les risques sanitaires sont influencés par la nature des matières manipulées et les méthodes de travail employées. La manutention des déchets a déjà été mise en lien avec des inflammations respiratoires, des troubles digestifs, et des syndromes liés aux poussières organiques toxiques. L’objectif du projet visait à évaluer l’exposition des travailleurs aux microorganismes et d’en apprécier les risques pour la santé.

Dans le cadre de ce projet, 28 camions …

Allier Les Technologies Numériques À La Prévention Des Lésions Professionnelles Pour Intervenir Auprès D'Une Population Faiblement Scolarisée Se Préparant À L'Emploi, Marie Laberge, Aurélie Tondoux, Myriam Bérubé, Céline Chatigny, Denys Denis

Rapports de recherche scientifique

Ce rapport présente les résultats d’un projet de recherche visant à améliorer la santé et la sécurité au travail (SST) des élèves du Parcours de formation axée sur l’emploi (PFAE) au Québec. Ce programme accueille chaque année entre 11 000 et 13 000 élèves de 15 ans à 21 ans qui éprouvent des difficultés scolaires et risquent de quitter l’école sans diplôme. Le PFAE offre des stages d’apprentissage en milieu de travail pour des métiers semi-spécialisés, couvrant un large éventail de secteurs d’activités. Les élèves du PFAE sont particulièrement vulnérables en matière de SST puisqu’ils sont très jeunes et ont …

Spectral Frequency And Broadband Noise Analysis Of The Firefighter Environment: Potential Implications For Cardiac Health, James Blando, Catherine Reed, Amya Turner

Epidemiology, Biostatistics, & Environmental Health Faculty Publications

Firefighters are well known to have elevated risk of adverse health outcomes across a wide range of diseases and injuries, including cancer, hearing loss, fatal cardiac events, post-traumatic stress disorder (PTSD), sleep disorders, and many other adverse outcomes. It has been speculated that the noise environment is a significant risk factor for several of these diseases. In particular, the impact of noise on cardiac outcomes has recently been identified. An environmental survey of noise that included spectral and broadband analysis was conducted across all 14 firehouses in a southeastern city in the United States as a first step to investigate …

Effets Respiratoires De L'Exposition Journalière Aux Particules Respirables, Fines Et Ultrafines Dans Divers Milieux De Travail, Audrey Smargiassi, Maximilien Debia, Eva Suarthana

États de la question, rapports d’expertise et revues de littérature

De très nombreux travailleurs sont exposés quotidiennement à des niveaux de particules dans l’air ambiant qui dépassent largement les concentrations auxquelles la population générale est exposée. Néanmoins, très peu d’études ont porté sur l’influence de l’exposition quotidienne des travailleurs aux particules respirables sur la santé respiratoire. La majorité des études se sont intéressées aux effets des expositions prolongées sur le développement de maladies respiratoires. Pourtant, les associations entre l’exposition journalière aux particules respirables et l’inflammation pulmonaire et la fonction respiratoire sont bien documentées pour la population générale. Les effets des particules respirables pourraient différer pour les travailleurs parce que les …

Occupational Exposure To Pesticides Increases The Risk Of Amyotrophyc Lateral Sclerosis: A Systematic Review And Meta-Analysis, France Labrèche, Pamela Prudhomme, Maryse Gagnon, Nicolas Dupré, Sabrina Gravel

Études primaires

Objective To systematically review the evidence on the association between occupational exposure to pesticides and the risk of amyotrophic lateral sclerosis (ALS).

Methods A systematic search, conducted in eight bibliographic databases for publications between 1990 and 2025, identified observational studies estimating the risk of ALS after occupational pesticide exposure. Study quality was assessed using the WHO Risk of Bias (RoB) assessment instrument for systematic reviews, with the ROBINS-E (RoB in non-randomised studies of exposure) tool domains of bias. Pooled risk estimates were produced using random-effects models with restricted maximum likelihood, heterogeneity was assessed with I² statistics, and meta-regressions and publication …

Risques De Blessures Professionnelles Et Leurs Déterminants Parmi Les Jeunes En Emploi Au Québec Entre 2015 Et 2021 : Analyses Selon Les Parcours D'Emploi Et D'Études, Jaunathan Bilodeau, Marc-Antoine Busque, Martin Lebeau, Gabriel Beauchamp

Rapports de recherche scientifique

Les blessures professionnelles parmi les jeunes demeurent un enjeu de santé publique majeur. Bien que les jeunes soient considérés comme une des populations à mettre en avant pour la prévention de la santé et la sécurité du travail, les mécanismes et processus impliqués dans leurs blessures au travail demeurent à explorer. Cette étude vise ainsi à mieux comprendre les facteurs contribuant aux risques de blessures professionnelles et de leur récurrence parmi les jeunes âgés de 15 à 24 ans. Plus particulièrement, l’objectif consiste à (1) documenter l’association entre les profils de parcours professionnel ainsi que d’études et le risque de …

Analysis Of The Functional And Acoustical Comfort Of Earplugs Experienced By A Group Of Workers In Canadian Companies And Identification Of The Influencing Variables, Bastien Poissenot-Arrigoni, Olivier Doutres, Alessia Negrini, Djamal Berbiche, Franck Sgard

Études primaires

Earplugs are essential for hearing protection in noisy workplaces, but their effectiveness depends heavily on user comfort, which influences proper and consistent use. This study explores functional and acoustical comfort experienced by 173 workers across Canadian companies, each testing different ’disposable or reusable’ earplug models over seven weeks. Comfort is assessed using detailed questionnaires covering six subdimensions: ease of insertion and removal, noise protection, impact on work, and discomfort related to internal and external noise perception. Linear mixed-effects models are applied within a triad framework encompassing person-, earplug-, and environment-related characteristics in order to identify those with a significant influence …

Lung Inflammation From Daily Exposure To Airborne Particulate Matter In A Trade School, Kynda Tinawi, Céline Plante, Alan Da Silveira Fleck, Édith Giasson, Isabelle Valois, Caroline Couture, Eva Suarthana, Maximilien Debia, Audrey Smargiassi

Études primaires

Background Workers are exposed daily to various airborne chemical agents, however, associations between daily exposures to particulate matter and lung inflammation in occupational settings have been little explored. Objective To estimate the association between daily occupational exposure to respirable (PM4 and PM2.5), ultrafine particles, their oxidative potential, and fractional exhaled nitric oxide within apprentices in a school of construction trades. Methods We used a repeated measures design over 5 consecutive days in 56 apprentices from 3 construction trade sectors (bricklaying, welding, and carpentry). Fractional exhaled nitric oxide was measured each day post-work. Personal and work area daily PM4 were collected …

Intratracheal Interleukin-10 Administration Reduces Acute Lung Injury Induced By Sulfur Dioxide Exposure In Mice, Amy J. Nelson, Todd A. Wyatt, Bradley W. Richmond, Belinda Diaz, Angela Gleason, Michael J. Duryee, Geoffrey M. Thiele, Ted R. Mikuls, Jill A. Poole

Journal Articles: Environmental, Agricultural & Occupational Health

Therapies capable of reducing acute high-consequence airborne chemical exposure-induced lung disease are lacking. This study seeks to determine the therapeutic potential of interleukin (IL)-10 administered following acute sulfur dioxide (SO₂) exposure in mice. C57BL/6 male and female mice were exposed to SO₂ gas at 125 ppm for 4 h and subsequently treated 2-3 h later with IL-10 (1 μg) or vehicle control by intratracheal instillation for a total of 3 doses over 2 days with comparisons to sham-treated mice (N = 20 mice/group). IL-10 treatment reduced SO₂-induced weight loss with corresponding reductions in SO_{2 …}