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Acquisition et intégration d'un exosquelette en entreprise
Ce guide, destiné aux préventeurs, permet à l'entreprise d'appréhender les nombreuses questions posées par l'intégration d'un exosquelette. Il propose une démarche allant de la définition du besoin d'assistance physique jusqu'à son intégration en situation réelle de travail. Structurée en trois phases, cette méthode vise à accompagner l'entreprise dans sa réflexion d'acquisition d'un exosquelette, à créer les conditions permettant son intégration...
Exosquelettes au travail : impact sur la santé et la sécurité des opérateurs état des connaissances
Ce guide, destiné aux préventeurs, fait un point sur les connaissances actuelles des exosquelettes afin de mettre en évidence les intérêts et les limites de leur usage en matière de prévention des troubles musculosquelettiques (TMS). L'objectif est d'aider à mieux appréhender l'impact des exosquelettes pour accompagner efficacement l'entreprise dans sa démarche d'acquisition et d'intégration d'un exosquelette. Source: http://www.inrs.fr/media.html?refINRS=ED%206311
Participatory organizational intervention for improved use of assistive devices in patient transfer
A single-blinded cluster randomized controlled trial Objectives: This randomized controlled trial (RCT) evaluated the effect of a participatory organizational intervention for improved use of assistive devices (AD) in patient transfer. Methods: We randomly allocated 27 departments from five hospitals in Denmark to a participatory intervention (14 clusters, 316 healthcare workers) or a control group (13 clusters, 309 healthcare workers). The intervention consisted of 2×2 hour workshops with managers, the hospital's health and safety staff, and 2–5 healthcare workers from each department...
An ergonomic field study to evaluate the effects of a rotatable handle piece on muscular stress and fatigue as well as subjective ratings of usability, wrist posture and precision during laparoscopic surgery
An explorative pilot study Purpose: The interface between surgeon and the laparoscopic instrument is an important factor in biomechanical stress that may increase the risk of musculoskeletal complaints in surgeons. This article investigates the effect of a laparoscopic instrument with a rotatable handle piece (rot-HP) on muscular stress and fatigue during routine laparoscopic procedures (LP) as well as usability, wrist posture and working precision. Methods: 40 LP (subtotal hysterectomies) performed by 11 surgeons were investigated. 20 LP were carried out with the rot-HP and 20 with a fixed (standard...
Economic evaluation of a randomized controlled trial of an intervention to reduce office workers’ sitting time: the "Stand Up Victoria" trial
Multicomponent intervention involving a sit-and-stand desk can reduce sitting time and increase the standing and stepping time during the working hours for office-based workers, and it is likely to promote the cardiovascular fitness. It is cost-effective in the long-term from a societal perspective. This study provides important evidence for policy-makers and workplaces regarding allocation of resources to reduce workplace sitting. Source: Gao, L., Flego, A., Dunstan, D. W., Winkler, E. A., Healy, G. N., Eakin, E. G., ... et Wiesner, G. H. (2018). Scandinavian journal of work, environment &...
Effectiveness of a vacuum lifting system in reducing spinal load during airline baggage handling
Information on spinal loading for using lift assist systems for airport baggage handling is lacking. We conducted a laboratory study to evaluate a vacuum lift system for reducing lumbar spinal loads during baggage loading/unloading tasks. Ten subjects performed the tasks using the industry average baggage weight of 14.5?kg on a typical two-shelved baggage cart with or without using the lift system (i.e. lifting technique). Repeated measures analysis of variance (2 tasks × 2 shelf heights x 2 techniques) was used. Spinal loads were estimated by an electromyography-driven biomechanical model...
Barriers to the Use of Assistive Devices in Patient Handling
Work-related musculoskeletal disorders (WMSD) are a major safety concern in today’s health care environment due to the manual lifting of patients with higher acuity levels and obesity. Nurses move patients multiple times each day, incurring cumulative stress and trauma resulting in chronic pain and potential injury. The purpose of this study was to assess barriers to the use of assistive devices in safe patient handling and mobility (SPHM) that contribute to WMSD in health care workers. Interpersonal, situational, organizational, and environmental influences have both direct and indirect...
Conception des équipements de travail et prévention des TMS Complémentarités et points d’ancrage des démarches
Après un bref rappel sur les démarches de prévention des TMS et de conception des équipements de travail, cet article présente dans un premier temps les difficultés constatées vis-à-vis de leur articulation. Il propose ensuite des « points d’ancrage » pour accompagner, dans un cadre participatif et multidisciplinaire, les temps de recherche de solutions et de décisions. Les interactions ainsi obtenues favorisent le partage des référentiels et explicitent les processus de décision. Elles fonctionnent...
Les dispositifs d'assistance physique
Exosquelette, cobot, robot collaboratif… Sous ces dénominatifs parfois un peu barbares, se cache une technologie de plus en plus présente dans le monde du travail : les dispositifs d'assistance physique. Qu'ils soient à contention ou sans, ces systèmes sont destinés à aider physiquement des opérateurs dans l'accomplissement de tâches parfois simples en apparence, mais éprouvantes. Objectif : prévenir l'apparition des troubles musculosquelettiques (TMS) et la pénibilité en limitant la charge...
Saddle Seat Reduces Musculoskeletal Discomfort in Microsurgery Surgeons
Background. Microsurgery is a surgical procedure that requires a high degree of precision and is commonly facilitated through the use of an intraoperative microscope. When operating the microscope system, the long-term posture and stance lead to fatigue and musculoskeletal disorders in surgeons, and seats are commonly employed to diminish these problems. The present study was conducted to evaluate musculoskeletal discomfort during work with a saddle seat especially designed for people using intraoperative microscopes in comparison with conventional seats for microscopic works. Materials and methods...
Effects of prolonged microscopic work on neck and back strain amongst male ENT clinicians and the benefits of a prototype postural support chair
Musculoskeletal pain is a common occupational hazard experienced by surgeons. Otologists are predisposed to neck and back pain due to regular prolonged microscopic work. We conducted a prospective pilot study to investigate the effects of sustained microscopic work on the neck and back, its correlation to surgical experience and to assess the benefits of a prototype postural support chair (PSC) amongst 10 male ear, nose and throat (ENT) clinicians. We used a subjective measure of time to fatigue and pain for the neck and back as well as objective readings from a surface electromyogram (sEMG). We...
Conception des équipements de travail et prévention des TMS Complémentarités et points d’ancrage des démarches
Après un bref rappel sur les démarches de prévention des TMS et de conception des équipements de travail, cet article présente dans un premier temps les difficultés constatées vis-à-vis de leur articulation. Il propose ensuite des « points d'ancrage » pour accompagner, dans un cadre participatif et multidisciplinaire, les temps de recherche de solutions et de décisions. Les interactions ainsi obtenues favorisent le partage des référentiels et explicitent les processus de décision. Elles fonctionnent...
Evaluating biomechanics of user-selected sitting and standing computer workstation
A standing computer workstation has now become a popular modern work place intervention to reduce sedentary behavior at work. However, user's interaction related to a standing computer workstation and its differences with a sitting workstation need to be understood to assist in developing recommendations for use and set up. The study compared the differences in upper extremity posture and muscle activity between user-selected sitting and standing workstation setups. Twenty participants (10 females, 10 males) volunteered for the study. 3-D posture, surface electromyography, and user-reported...
Guide aménagement d'un poste d'accueil
Ce guide de prévention vous aidera à concevoir un poste d’accueil sécuritaire et fonctionnel ou à corriger les déficiences d’un poste existant. Il propose une démarche d’aménagement d’un poste d’accueil en quatre étapes : l’analyse des besoins, l’élaboration d’un concept, l’élaboration des caractéris­tiques détaillées du poste et, finalement, la validation et le suivi. À chacune des étapes, l’implication des personnes qui travailleront...
Implementing powered stretcher and load systems was a cost effective intervention to reduce the incidence rates of stretcher related injuries in a paramedic service
Paramedic services are considering moving towards the use of powered stretcher and load systems to reduce stretcher related injuries, but cost is perceived as a barrier. This study compared injury incidence rates, days lost, and compensation costs between Niagara Emergency Medical Service (NEMS) and Hamilton Paramedic Service (HPS) pre- (four years) and post- (one year) implementation of powered stretcher and load systems in NEMS. Prior to the intervention stretcher related musculoskeletal disorder (MSD) incidence rates averaged 20.0 (±6.8) and 17.9 (±6.4) per 100 full time equivalent...
Designing, prototype making and evaluating a mechanical aid device for patient transfer between bed and stretcher
Introduction: The present study aimed at designing, prototype making and evaluating a new assistive device to improve patient transfer conditions. Methods: A new aid device for patient transfer was designed and its prototype was made. Comfort and perceived physical exertion of users and stability and applicability of the device were examined. The test subjects included 37 healthcare workers from a hospital with patient transfer experience. The data collection tools consisted of visual analog scales (VAS) and Borg's rating physical effort scale. The rapid entire body assessment (REBA) method...
A multi-component patient-handling intervention improves attitudes and behaviors for safe patient handling and reduces aggression experienced by nursing staff
A controlled before-after study This study evaluated an intervention for patient-handling equipment aimed to improve nursing staffs' use of patient handling equipment and improve their general health, reduce musculoskeletal problems, aggressive episodes, days of absence and work-related accidents. As a controlled before-after study, questionnaire data were collected at baseline and 12-month follow-up among nursing staff at intervention and control wards at two hospitals. At 12-month follow-up, the intervention group had more positive attitudes towards patient-handling equipment and increased...
Influence of different stool types on muscle activity and lumbar posture among dentists during a simulated dental screening task
Whereas in the past dental stools typically facilitated a 90° hip angle, a number of currently available alternative designs allow for a more extended hip posture. The present study investigated the influence of different stool types on muscle activity and lumbar posture. Twenty five participants completed a simulated dental procedure on a standard stool, a saddle and the Ghopec. The latter stool comprises a seat pan consisting of a horizontal rear part for the pelvis and an inclinable sloping down front part for the upper legs, with a vertically and horizontally adjustable back rest. Lumbar...
Call Center Productivity Over 6 Months Following a Standing Desk Intervention
Background: Many office employees are spending up to 90% of their workday seated, and employers are considering stand-capable desks as a way to increase physical activity throughout the day. When deciding on adoption of stand-capable workstations, a major concern for employers is that the benefits, over time, may not offset the initial cost of implementation. Methods: This study compared objective measures of productivity over time between a group of stand-capable desk users and a seated control group in a call center. Comparison analysis was completed for continuous six-month secondary data for...
A Psychophysical Protocol to Develop Ergonomic Recommendations for Sitting and Standing Workstations
Objective: The aim of this study was to determine user self-selected setup for both sitting and standing computer workstations and identify major differences. Background: No current ergonomic setup guideline for standing computer workstations is available. Methods: Twenty adult participants completed four 45-min sessions of simulated office computer work with an adjustable sit-stand computer workstation. Placement and relative position of all workstation components, including a cordless mouse, a cordless keyboard, a height-adjustable desk, and a 22-inch monitor mounted on a mechanical-assisted...
Solutions visant l’amélioration des conditions de santé et de sécurité des poseurs de revêtements de sol
La pose de revêtement de sol se divise en différentes spécialités : céramique, bois et revêtement souple. C'est ce dernier secteur qui nous intéresse, soit la pose de tapis (accrochés ou collés; en rouleau, en tuiles) ou de matériaux résilients (linoléum, vinyle, caoutchouc, gazon synthétique, etc.). Le métier de poseur de revêtement de sol est exigeant sur le plan physique (manutention de rouleaux très lourds, travail à genou prolongé, épandage de colle sur de grandes...
Multi-position ergonomic computer workstation design to increase comfort of computer work
This paper presents a new design of computer workstation that is aimed at increasing the comfort of a user working for long periods at a computer. As we have become a society that spends a lot of time working on computers, the computer workstation needs to provide comfort to users. Discomfort and an improper position can negatively affect overall health and productivity. A new type of ergonomic computer workstation, which allows users to sit in multiple working positions, is proposed in order to provide better comfort to people who spend a long time sitting at their workstations. We have designed...
Apports et limites des mannequins "virtuels" pour la conception des postes de travail
La journée technique organisée par l'INRS, en partenariat avec l'Institut français des sciences et technologies des transports, de l'aménagement et des réseaux (Ifsttar), avait pour objectif de montrer les atouts et les limites des logiciels de conception des postes de travail utilisant des mannequins numériques. Des retours d'expérience et des résultats d'études ont permis de confronter les fonctionnalités proposées par les éditeurs aux besoins des industriels. Source: http://www.hst.fr/inrs...
Height-adjustable workstations to reduce sedentary behaviour in office-based workers
Systematic review Background: Time spent sitting in the workplace is an important contributor to overall sedentary risk. Installation of height-adjustable workstations has been proposed as a feasible approach for reducing occupational sitting time in office workers. Aims: To provide an accurate overview of the controlled trials that have evaluated the effects of height-adjustable workstation interventions on workplace sitting time in office-based workers. Methods: A comprehensive search was conducted up until March 2014 in the following databases: Medline, PsychINFO, CENTRAL, EMBASE and PEDro....
Anthropometric Study of U.S. Truck Drivers
Methods, Summary Statistics, and Multivariate Accommodation Models Since up-to-date anthropometric data, which plays an important role in improving ergonomic design of truck cabs, has not been collected for decades, NIOSH launched the first-ever federal anthropometric study of U.S. truck drivers. This document summarizes the results of the study that, we hope, will be used by truck manufacturers, parts suppliers, transportation researchers, fleet managers, and other interested parties for decades to come. Source: http://www.cdc.gov/niosh/docs/2015-116/
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