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Does occupational lifting affect the risk of hypertension?
Cross-sectional and prospective associations in the Copenhagen City Heart Study Objective: The aim of this study was to investigate cross-sectional and prospective associations between heavy occupational lifting and hypertension. Methods: Data from the third, fourth and fifth examinations of the Copenhagen City Heart Study were included. Multivariable logistic regression models were applied to adjust for sex, age, body mass index (BMI), smoking, education, self-rated cardiorespiratory fitness, vital exhaustion and baseline blood pressure, and were used to estimate (i) the cross-sectional association...
Modeling the Effect of the 2018 Revised ACGIH® Hand Activity Threshold Limit Value® (TLV) at Reducing Risk for Carpal Tunnel Syndrome
Recent studies have shown the 2001 American Conference of Governmental Industrial Hygienists (ACGIH®) Threshold Limit Value (TLV®) for Hand Activity was not sufficiently protective for workers at risk of carpal tunnel syndrome (CTS). These studies led to a revision of the TLV and Action Limit. This study compares the effect of applying the 2018 TLV vs. the 2001 TLV to predict incident CTS within a large occupational pooled cohort study (n = 4,321 workers). Time from study enrollment to first occurrence of CTS was modeled using Cox proportional hazard regression. Adjusted and unadjusted...
Les conséquences de l’utilisation d‘exosquelettes en termes de sécurité et de santé au travail
Ce document de réflexion examine le rôle que pourraient jouer les exosquelettes dans l'environnement de travail du futur et les possibles incidences de leur utilisation sur la sécurité et la santé des travailleurs. Il examine le rôle que pourraient jouer les exosquelettes dans la prévention des troubles musculo-squelettiques, et se penche sur les risques potentiels de leur application dans différents domaines. Le document reconnaît l'incertitude qui entoure leurs effets à long terme sur la santé et les difficultés...
Sedentary work and risk of venous thromboembolism
Objective: Prolonged seated immobility during long-distance flights is related to an increased risk of venous thromboembolism (VTE), but little, if anything, is known about the risk related to sedentary work. The objective of this paper was to examine the risk of VTE according to sitting posture at work. Methods: This prospective study includes a total of 78 936 participants from the Copenhagen City Heart Study and the Copenhagen General Population Study, all without previous thromboembolic events and aged <65 years. An assessment of the number of hours spent in sitting position at work was...
Effects of standing on typing task performance and upper limb discomfort, vascular and muscular indicators
Standing is a popular alternative to traditionally seated computer work. However, no studies have described how standing impacts both upper body muscular and vascular outcomes during a computer typing task. Twenty healthy adults completed two 90-min simulated work sessions, seated or standing. Upper limb discomfort, electromyography (EMG) from eight upper body muscles, typing performance and neck/shoulder and forearm blood flow were collected. Results showed significantly less upper body discomfort and higher typing speed during standing. Lower Trapezius EMG amplitude was higher during standing...
Visual and psychological stress during computer work in healthy, young females - physiological responses
Purpose: Among computer workers, visual complaints, and neck pain are highly prevalent. This study explores how occupational simulated stressors during computer work, like glare and psychosocial stress, affect physiological responses in young females with normal vision. Methods: The study was a within-subject laboratory experiment with a counterbalanced, repeated design. Forty-three females performed four 10-min computer-work sessions with different stress exposures: (1) minimal stress; (2) visual stress (direct glare); (3) psychological stress; and (4) combined visual and psychological stress...
Blood Pressure Response to Interrupting Workplace Sitting Time With Non-Exercise Physical Activity
Results of a 12-month Cohort Study Objective: To evaluate the blood pressure (BP) effects of a yearlong e-health solution designed to interrupt prolonged occupational sitting time. Methods: BP data of 228 desk-based employees (45.1 ± 10.5 years) were analyzed at baseline, 3, 6, 9, and 12 months. Results: Systolic BP significantly reduced from baseline for the first 9 months (1.0 to 3.4 mmHg; P < 0.01) while diastolic and mean arterial pressure decreased for the full 12-months (4 to 5 mmHg for diastolic pressure and 3.6 to 4.2 mmHg for MAP; all P < 0.01). Participants used the e-health...
Dose-response relationship between cumulative physical workload and osteoarthritis of the hip
A meta-analysis applying an external reference population for exposure assignment Background: There is consistent evidence from observational studies of an association between occupational lifting and carrying of heavy loads and the diagnosis of hip osteoarthritis. However, due to the heterogeneity of exposure estimates considered in single studies, a dose-response relationship between cumulative physical workload and hip osteoarthritis could not be determined so far. Methods: This study aimed to analyze the dose-response relationship between cumulative physical workload and hip osteoarthritis...
The Relationship Between Occupational Standing and Sitting and Incident Heart Disease Over a 12-Year Period in Ontario, Canada
While a growing body of research is examining the impacts of prolonged occupational sitting on cardiovascular and other health risk factors, relatively little work examined the effects of occupational standing. The objectives of this paper were to examine the relationship between occupations that require predominantly sitting, and those that require predominantly standing, and incident heart disease. A prospective cohort study combining responses to a population health survey with administrative health care records, linked at the individual level was conducted in Ontario, Canada. The sample included...
Temporal patterns of sitting at work are associated with neck–shoulder pain in blue-collar workers
A cross-sectional analysis of accelerometer data in the DPHACTO study BACKGROUND: Our aim was to examine the extent to which temporal patterns of sitting during occupational work and during leisure-time, assessed using accelerometry, are associated with intense neck-shoulder pain (NSP) in blue-collar workers. METHODS: The population consisted of 659 Danish blue-collar workers. Accelerometers were attached to the thigh, hip, trunk and upper dominant arm to measure sitting time and physical activity across four consecutive days. Temporal sitting patterns were expressed separately for work and leisure...
Impact of a Sit-Stand Workstation on Chronic Low Back Pain
Results of a Randomized Trial Objective: The aim of the study was to determine whether chronic low back pain (LBP) might be attenuated through the introduction of a sit-stand workstation (SSW) in office employees. Methods: Participants were randomized to receive a SSW at the beginning or at the end of a 3-month study period. Participants responded to a short survey at the end of each workday and a comprehensive survey at weeks 1, 6, and 12. Surveys consisted of a modified brief pain inventory and the Roland Morris Disability Questionnaire. Results: Forty-six university employees with self-reported...
Sedentary Work
Summary of the Literature Review Evidence on an Emergent Work Health and Safety Issue Overall exposure to sedentary behaviour (especially prolonged, unbroken sitting time) is associated with a range of poor health outcomes, including musculoskeletal problems, cardiovascular disease, diabetes, obesity, some cancers and premature mortality. The majority of these associations remain even after allowing for the impact of physical inactivity, thereby highlighting that sedentary behaviour and physical inactivity need to be considered as separate health hazards. While most of the evidence to date relates...
Physical workload and risk of long-term sickness absence in the general working population and among blue-collar workers
Prospective cohort study with register follow-up Objective: To determine the prospective association between physical workload—in terms of specific physical exposures and the number of exposures—and long-term sickness absence (LTSA). Methods: Using cox-regression analyses, we estimated the risk of register-based incident LTSA (at least 3 consecutive weeks) from self-reported exposure to different physical workloads among 11 908 wage earners from the general working population (Danish Work Environment Cohort Study year 2000 and 2005). Results: The incidence of LTSA was 8.9% during two...
Ischaemic heart disease among workers in occupations associated with heavy lifting
OBJECTIVES: To investigate a hypothesized positive association between employment in occupations where heavy lifting is likely to occur, and the risk of ischaemic heart disease (IHD). MATERIAL AND METHODS: Male blue-collar workers from Denmark (N = 516 180) were monitored with respect to hospital treatment or death due to IHD, through national registers over the years 2001-2010. Poisson regression was used to estimate relative rates of IHD between "workers in occupations which, according to an expert opinion, are likely to involve heavy lifting" and "other blue-collar workers."...
Occupational sitting time and risk of all-cause mortality among Japanese workers
Objectives: Prolonged sitting is a health risk for cardiovascular diseases and all-cause mortality, independent of moderate-to-vigorous physical activity. Epidemiological evaluation of occupational sitting has received little attention, even though it may have a potential impact on workers' health. We prospectively examined the association between occupational sitting time and all-cause mortality. Methods: Community-dwelling, Japanese workers aged 50–74 years who responded to a questionnaire in 2000–2003 were followed for all-cause mortality through 2011. Cox proportional hazard...
Troubles musculosquelettiques et santé psychologique
Démarche de soutien aux activités de prise et de répartition des appels d'urgence 9-1-1 La présente étude constitue un prolongement des recherches antérieures ayant pour objectif de réduire les risques psychosociaux associés aux troubles musculosquelettiques et de santé psychologique chez les préposés des centres d'urgence 9-1-1. Elle se fonde plus précisément sur la précédente recherche (Toulouse et coll., 2011) dont les résultats suggéraient la nécessité...
Les troubles musculosquelettiques du rachis chez les assistantes maternelles
Les assistantes maternelles sont-elles exposées à des contraintes biomécaniques suffisantes pour établir un lien direct avec l'apparition de TMS du rachis ou de hernies discales ? Pour répondre à cette question, une revue de la littérature a été effectuée et les réseaux de surveillance ont été interrogés. Aucune étude portant spécifiquement sur " assistantes maternelles " et " TMS " ne permet de répondre à la question posée. Cependant, les...
Predictors of sickness absence related to musculoskeletal pain
A two-year follow-up study of workers in municipal kitchens Objective : We studied predictors of sickness absences (SA) due to musculoskeletal pain over two years among 386 municipal female kitchen workers. Methods : Pain and SA periods (no/yes) due to pain in seven sites during the past three months were assessed at 3-month intervals over two years by questionnaire. Age, musculoskeletal pain, multisite pain (pain in ≥3 sites), musculoskeletal and other somatic diseases, depressive symptoms, physical and psychosocial workload, body mass index, smoking, and leisure-time physical activity (LTPA...
Standing, kneeling and squatting at work – health-based limit values
In the present report, at the request of the Minister of Social Affairs and Employment, the Health Council of the Netherlands has investigated whether at the present time there are any new scientific insights concerning health-based or safety-based limit values for work performed while standing, kneeling or squatting. This report is one of a series of advisory reports in which the Committee on the Identification of Workplace Risks examining occupational risks covered by the Dutch Working Conditions Act and its associated regulations. To answer the Minister’s questions, the Committee studied...
Étude pour intervenir sur la réduction des troubles musculo-squelettiques et de santé psychologique dans les centres d’appels d’urgence 911 de la sécurité publique municipale
Une recherche multidisciplinaire a permis de mieux cerner les dimensions de la charge mentale en lien avec les TMS et les problèmes de santé psychologique des préposés des centres d’appels d’urgence 9-1-1, profession qui a été jusqu’à maintenant peu étudiée par les chercheurs. L’étude démontre que leur travail est loin d’être celui « d’un simple répartiteur d’appels » puisqu’ils doivent faire face avec efficacité à la gestion du flux...
Association of hip osteoarthritis and manual handling of loads over 20 kg
Physically loading work factors may play a considerable role in the development of hip osteoarthritis. Recurrent work-related manual handling of workloads over 20 kg was associated with hip osteoarthritis in both genders between the ages of 30 and 97. The risk was visible after 12 years' exposure. Source : http://www.ttl.fi/en/news/Pages/association_hip_osteoarthritis_handling_loads.aspx #
Questionnaire TMS de l'INRS
Utilisation dans les entreprises de conditionnement du secteur de la parfumerie Le conditionnement dans l'industrie de la parfumerie et de la cosmétique est une activité à fort risque de troubles musculosquelettiques (TMS). Le questionnaire de l'INRS a été utilisé dans 4 entreprises de ce secteur chez 426 salariés. La population concernée est essentiellement féminine, la moyenne d'âge est de 43,4 ans. Les plaintes concernent pour les deux tiers le rachis (cervicalgies, lombalgies...). Un tiers des salariés a...
Dépistage précoce de l’incapacité chronique liée aux lombalgies
Élaboration et validation d'un questionnaire La douleur au bas du dos d'origine non spécifique, aussi appelée lombalgie commune, affecte de 60 à 90 % des travailleurs à un moment ou à un autre de leur vie et disparaît généralement dans une période allant de quelques jours à quelques semaines. Toutefois, pour un petit nombre de travailleurs affectés, le mal de dos perdure et entraîne une incapacité à retourner au travail pour une période prolongée. Cette situation génère...

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