Occupational Health and Industrial Hygiene Commons^™

Excess Risk Of Covid-19 Infection And Mental Distress In Healthcare Workers During Successive Pandemic Waves: Analysis Of Matched Cohorts Of Healthcare Workers And Community Referents In Alberta, Canada, Jean-Michel Galarneau, France Labrèche, Quentin Durand-Moreau, Shannon Ruzycki, Anil Adisesh, Igor Burstyn, Tanis Zadunayski, Nicola Cherry

Études primaires

Objectives: To investigate changes in risk of infection and mental distress in healthcare workers (HCWs) relative to the community as the COVID-19 pandemic progressed. Methods: HCWs in Alberta, Canada, recruited to an interprovincial cohort, were asked consent to link to Alberta’s administrative health database (AHDB) and to information on COVID-19 immunization and polymerase chain reaction (PCR) testing. Those consenting were matched to records of up to five community referents (CRs). Physician diagnoses of COVID-19 were identified in the AHDB from the start of the pandemic to 31 March 2022. Physician consultations for mental health (MH) conditions (anxiety, stress/adjustment reaction, depressive) …

Availability, Use, And Impact Of Workplace Mental Health Supports During The Covid-19 Pandemic In A Canadian Cohort Of Healthcare Workers, Shannon Ruzycki, Anil Adisesh, Igor Burstyn, Quentin Durand-Moreau, France Labreche, Tanis Zadunayski, Nicola Cherry

Études primaires

We investigated the availability and use of workplace mental health (MH) supports during the COVID-19 pandemic in a Canadian cohort of healthcare workers (HCW) and measured anxiety and depression by the Hospital Anxiety and Depression Scale (HADS) completed at four contacts 2020–2022. Reports were available for 4400 HCW working with patients. Half the HCWs had a clinically significant HADS score at one or more contacts Access to MH supports increased during the pandemic, with 94% reporting access to some workplace support by 2022: 47% had made use of at least one support. 25% of those with high HADS scores used …

Adaptation D’Outils Pour Soutenir Le Retour Progressif Au Travail, Marie-José Durand, Marie-France Coutu, Chantal Sylvain, Daniel Côté, Marie-Andrée Paquette

Rapports de recherche scientifique

L’incapacité au travail en raison de troubles musculosquelettiques (TMS) ou mentaux courants (TMC) affecte une portion importante de travailleurs et génère des coûts substantiels. La mise en œuvre de modalités de retour progressif au travail (RPAT) constitue un moyen efficace pour favoriser le retour et le maintien au travail des travailleurs concernés. Le Guide d’évaluation de la marge de manœuvre (GEMM) et l’Outil de retour progressif au travail (ORPAT) constituent des outils pertinents pour soutenir la pratique des professionnels de la santé et des milieux de travail à cet égard. Toutefois, leur utilisation dans la pratique demeure peu répandue et …

On The Area-Averaged Effective Sound Absorption Coefficient Of Porous Materials Excited By A Monopole, Franck Sgard, Noureddine Atalla, Olivier Robin, Alain Berry

Études primaires

The area-averaged effective sound absorption coefficient (SAC) of a rigid-backed homogeneous porous material subjected to a monopole excitation is calculated as the absorbed-to-incident sound power ratio. Using Allard's model to describe the sound propagation above the porous material, an analytical model for this power-based SAC is proposed and proves to give a good approximation of the sound absorption performance under monopole excitation of sufficiently large areas of material. The impact of factors on the power-based SAC, such as monopole height, material radial dimension used to calculate the sound powers, and material properties is discussed. The power-based SAC frequency-dependent behavior is …

Disability Reduction Following A Lumbar Stabilization Exercise Program For Low Back Pain: Large Vs. Small Improvement Subgroup Analyses Of Physical And Psychological Variables, Christian Larivière, Richard Preuss, Marie-France Coutu, Michael J. Sullivan, Nicolas Roy, Sharon M. Henry

Études primaires

Background: Little is known about why patients with low back pain (LBP) respond differently to treatment, and more specifically, to a lumbar stabilization exercise program. As a first step toward answering this question, the present study evaluates how subgroups of patients who demonstrate large and small clinical improvements differ in terms of physical and psychological changes during treatment. Methods: Participants (n = 110) performed the exercise program (clinical sessions and home exercises) over eight weeks, with 100 retained at six-month follow-up. Physical measures (lumbar segmental instability, motor control impairments, range of motion, trunk muscle endurance and physical performance tests) were …

An Impedance Tube Technique For Estimating The Insertion Loss Of Earplugs, K. Carillo, O. Doutres, F. Sgard

Études primaires

This paper proposes a quick and straightforward technique for estimating the insertion loss (IL) of earplugs measured on an acoustical test fixture (ATF) using a commercial impedance tube. In this method, the earplug's acoustic properties (i.e., its transmission loss and the reflection coefficient of its medial surface) are determined from its transfer matrix measured using the three-microphones impedance tube method modified here for the current application. The IL is then estimated using a one-dimensional analytical model of open and occluded earcanals based on the wavefield decomposition theory. The method is evaluated numerically and experimentally from 50 Hz to 6.5 kHz. …

Effect Of Personalized Spinal Profile On Its Biomechanical Response In An Emg-Assisted Optimization Musculoskeletal Model Of The Trunk, C. Larivière, A.H. Eskandari, H. M., F. Ghezelbash, D. Gagnon, A. Shirazi-Adl

Études primaires

Recent developments in musculoskeletal (MS) modeling have been geared towards model customization. Personalization of the spine profile could affect estimates of spinal loading and stability, particularly in the upright standing posture where large inter-subject variations in the lumbar lordosis have been reported. This study investigates the biomechanical consequences of changes in the spinal profile. In 31 participants (healthy and with back pain), (1) the spine external profile was measured, (2) submaximal contractions were recorded in a dynamometer to calibrate the EMG-driven MS model and finally (3) static lifting in the upright standing challenging spine stability while altering load position and …

Comparative Evaluation Of Different Spinal Stability Metrics, Amir Hossein Eskandari, Farshid Ghezelbash, Aboulfazl Shirazi-Adl, Christian Larivière

Études primaires

Direct in vivo measurements of spinal stability are not possible, leaving computational estimations (such as dynamic time series and structural analyses) as the feasible option. However, differences between different stability assessment approaches and metrics remain unclear. To explore this, we asked 32 participants to perform 35 cycles of repetitive lifts with and without load (4/2.6 kg for males/females). EMG signals and 3D kinematics were collected via 12 surface electrodes and 17 inertial sensors, and three dynamical stability measures were computed: short and long temporal and conventional maximum Lyapunov exponents (LyE) and maximum Floquet multipliers (FM). A dynamic subject-specific EMG-assisted musculoskeletal …

Occupational Pressures Of Frontline Workers Enforcing Covid-19 Pandemic Measures In Ontario And Quebec, Canada, Pamela Hopwood, Ellen Maceachen, Daniel Côté, Samantha B. Meyer, Shannon Majowicz, Ai-Thuy Huynh, Meghan K. Crouch, Joyceline Amoako, Yamin T. Jahangir, Amelia León Correal, Antonela Ilic

Études primaires

BACKGROUND:During the COVID-19 pandemic, low-wage public-facing frontline workers (FLWs), such as grocery store clerks, were required to monitor retail customers and enforce COVID-19 protocols. OBJECTIVE:This analysis aimed to examine FLWs experiences of enforcing COVID-19 pandemic measures. METHODS:Between September 2020 and March 2021, in Ontario and Quebec (Canada), we conducted in-depth interviews about customer-related work and health risks with FLWs who interacted with the public (n = 40) and their supervisors (n = 16). Using a lens of situational analysis, verbatim transcripts were coded according to recurring topics. RESULTS:We found that enforcing public health measures placed already-precarious workers in difficult occupational …

Les Pratiques Professionnelles Des Pomiculteurs Exposés Aux Pesticides : Des Savoir-Faire De Métier Aux Pratiques Stratégiques, Caroline Jolly, Alain Garrigou, Elise Ledoux

Études primaires

Dans les très petites entreprises pomicoles, le propriétaire assume majoritairement seul la préparation et la pulvérisation des pesticides. Le respect des mesures de prévention prescrites n’élimine pas l’exposition, pouvant occasionner des effets à la santé. L’objectif est de décrire les pratiques professionnelles développées par les pomiculteurs. Elles visent à limiter l’exposition aux pesticides tout en produisant des fruits de qualité, contribuant ainsi à l'essor de leur entreprise. La recherche-intervention mobilisant l’ergotoxicologie a été réalisée auprès de pomiculteurs au Québec. La diversité des pratiques professionnelles présentées s’inscrit dans les domaines d’activités de la gestion stratégique (p. ex. : développement de l’entreprise) …

Workplace Stress Of Special School Teachers At Three Schools In Bali Province, Made Adhyatma Prawira Natha Kusuma, Agnes Ayu Biomi, Luh Putu Wulandari Artha

Preventia: The Indonesian Journal of Public Health

Workplace stress is often seen as a threat or a problem that comes from the work environment. Stress is a feeling resulting from the interaction between the individual and the work environment. Work stress can happen to anyone at any time, including special school teachers. This research aims to describe the workplace stress of special school teachers at three schools in the Bali Province. This research was conducted in October-December 2022. Researcher used quantitative research method with cross-sectional design and descriptive approach. Data collection is carried out using the Copenhagen Psychosocial Questionnaire-III and the Occupational Diagnosis Survey from the Ministry …

A Position Analysis Of Bpjs Claims Administration Officers And Verifiers (Case Study: Jambi Province Regional Mental Hospital), Hanisah Hanisah, Asmaripa Ainy, Iwan Stia Budi

Preventia: The Indonesian Journal of Public Health

The high coverage rate of handling partially rejected claim financing reaching 7.34% of the total 19,476 cases in the Outpatient Unit of the Jambi Provincial Mental Hospital (RSJD) in 2022, is closely related to the quality of human resources (HR) in this case, the claims officer and the suitability of what is done with the job description, job specifications and standard operating procedures (SOP) that have been made. This study aimed to analyze the position of administrative officers and claim verifiers in the outpatient unit of the Jambi Provincial Mental Hospital. This research used a qualitative method. Information was collected …

Développement D’Un Système De Mesure Pour La Caractérisation Des Traitements Absorbants En Laboratoire, Alain Berry, Olivier Robin, Thomas Dupont, Franck Sgard

Rapports de recherche scientifique

Le bruit constitue une préoccupation de plus en plus importante et généralisée dans le monde. Selon l’Organisation mondiale de la Santé, environ une personne sur quatre dans le monde souffrira de déficience auditive à des degrés divers d’ici à 2050. Dans de nombreux pays et régions du globe, le bruit représente le second facteur environnemental provoquant le plus de dommages sanitaires, et ce derrière la pollution atmosphérique. Sur un volet cognitif ou perceptif, le bruit environnemental peut par exemple perturber le sommeil et gêner l’apprentissage en milieu scolaire. Dans un milieu de travail, il peut perturber la bonne compréhension/perception de …

Développement De Méthodes Analytiques Pour Les Composés Organiques Volatils Microbiens (Covm) Dans Les Matrices Biologiques : Vers L’Évaluation Des Covm Comme Biomarqueurs D’Exposition Aux Moisissures, Badr El Aroussi, Sarah Tabbal, Wissam Berkane, Michèle Bouchard, Geneviève Marchand, Sami Haddad

Rapports de recherche scientifique

Préalablement, vingt composés organiques volatils microbiens (COVM), avec un potentiel d’être utilisés comme biomarqueurs de contamination et d’exposition aux moisissures en milieu de travail, avaient été identifiés, en considérant plusieurs paramètres, comprenant l’intérêt pour la santé des espèces de moisissures, l’occurrence d’émission ainsi que les paramètres physicochimiques et pharmacocinétiques.

Dans la présente étude, de nouvelles méthodes analytiques, pour mesurer simultanément 21 COVM incluant ceux identifiés préalablement dans les matrices biologiques et l’air ambiant, en se basant sur les techniques H-SPME-GC-MS/MS (sang et urine) et TD-GCMS/MS (exhalât et air ambiant), ont été développées et validés. Celles-ci ont exhibé des performances analytiques …

Analisis Hubungan Tingkat Pencahayaan, Reflektansi, Dan Kekontrasan Area Kerja Terhadap Keluhan Eye Strain Pada Karyawan Office Di Pt. X Tahun 2023, Afni Fadhila, Mila Tejamaya

National Journal of Occupational Health and Safety

Eye strain is a condition where the eyes are strained due to prolonged overuse, especially in computer-based activities. NIOSH states that about 75 - 90% of computer users who spend three hours or more complaining of visual impairment. A study by Kowalska et al (2011) on office workers who use computers intensely stated that the prevalence of eye strain in female workers was 50,7% and in men was 32,6%. This study aims to determine the relationship between illuminance, reflectance, and work area contrast on eye strain complaints in office employees at PT. X. This research was conducted from April - …

Hubungan Tingkat Berat Jenis Urin Dengan Keluhan Kesehatan Akibat Pajanan Panas Pada Pekerja Konstruksi Depo Lrt, Muhammad Syafiq Nafis, Doni Hikmat Hikmat Ramdhan

National Journal of Occupational Health and Safety

Background: Construction workers in Indonesia are among vulnerable workers of the negative impact of heat hazard from the work environment. Past research has found that more than 80% of construction workers experienced dehydration and 100% construction workers have experienced heat-related symptoms/illnesses. Objective: The purpose of this study is to analyze the correlation between dehydration (based on urine specific gravity) and heat-related symptoms/illnesses in depo Light-Rail Transit (LRT) construction workers. Methods: This study used a cross-sectional method from secondary data of work environment heat level measurement, workers’ questionnaire, and workers’ urine specific gravity in depo LRT construction 2021. Results : There …

Analisis Faktor Risiko Gangguan Otot Rangka Akibat Kerja Pada Pekerja Perkantoran Di Instansi X Tahun 2023, Alvina Winners Putri, Indri Hapsari Hapsari Susilowati

National Journal of Occupational Health and Safety

An uncomfortable posture when doing work for a long duration can cause work-related musculoskeletal disorders. The purpose of this study was to determine the risk factors associated with the occurrence of symptoms of work-related musculoskeletal disorders in office workers at Institution X in 2023. This study used a cross-sectional design and the occupational posture assessment Rapid Office Strain Assessment (ROSA) method then to assess complaints of musculoskeletal disorders as a whole subjectively using the NBM (Nordic Body Map). The results showed that the level of risk of complaints of musculoskeletal disorders due to work at the intermediate level requires further …

Analisis Sistem Proteksi Kebakaran Dan Keselamatan Kebakaran Di Stasiun Transit Manggarai Kereta Rel Listrik (Krl) Commuter Line Jabodetabek Tahun 2023, Naila Adinda Achmad, Hendra Hendra

National Journal of Occupational Health and Safety

Stasiun Manggarai is the most active station. In January 2023, Stasiun Manggarai has 150,000 transit users and 14,000 station users per day (Fransisca, 2023). This large number of users can certainly increase the density – and according to research – density can increase the existing potential hazards and risks, including fire hazards. Therefore, this research was conducted to find out the implementation of fire protection and fire safety system at Stasiun Transit Manggarai Kereta Rel Listrik (KRL) Commuter Line Jabodetabek using a descriptive observational method with comparative approach. The author compares the results of implementing fire protection and fire safety …

Analisis Hubungan Stres Kerja Dengan Kecelakaan Kerja Pada Pekerja Konstruksi Proyek Pembangunan Jalan Tol Yogyakarta – Bawen Paket 1 (Seksi 1) Tahun 2023, Shafira Agustina Rachmat, Doni Hikmat Hikmat Ramdhan

National Journal of Occupational Health and Safety

Construction workers are a job with high level of risk. There are many cases of construction workers experiencing stress due to their work, even until accident occurs. Factors that contribute to the occurrence of work stress include physical hazards and psychosocial factors, but it does not rule out the possibility of influence from individual characteristics. This study aims to analyze the correlation between occupational stress and workplace accidents in construction workers at Yogyakarta – Bawen Toll Road Construction Project Package 1 (Section 1) in 2023. This research is a quantitative study with a cross-sectional study design. The factors studied included …

Relation Of Salivary Alpha-Amylase (Saa) Concentration To Fatigue Biomarkers In Palm Oil Office Workers In Jambi Province: Preliminary Study, David Kusmawan, Willia Novita Eka Rini, Wahyu Indah Dewi Aurora

Makara Journal of Science

The salivary α-amylase (sAA) concentration has a potential role as a biological indicator of occupational fatigue. This study aimed to determine the levels of sAA and its influencing factors. This research used a cross-sectional design with a sample of 40 office staff respondents at PT. X (Persero). Mental workload (MWL), sleep quality, and occupational fatigue were measured using the NASA-Total Load Index (TLX), Pittsburgh Sleep Quality Index, and Industrial Fatigue Research Committee, respectively. Meanwhile, the basic sAA levels was measured through the sandwich enzyme-linked immunosorbent assay method using the Bioenzy® Kit Assay. Descriptive analysis showed that the workers were mostly …