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Applied Ergonomics

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https://www.readbyqxmd.com/read/29735161/the-ipswich-microbreak-technique-to-alleviate-neck-and-shoulder-discomfort-during-microscopic-procedures
#1
Ananth Vijendren, Gavin Devereux, Aaron Tietjen, Kathy Duffield, Vincent Van Rompaey, Paul Van de Heyning, Matthew Yung
Neck and shoulder disorders are a considerable health problem amongst frequent microscope users. We aimed to investigate the neck and shoulder discomfort experienced during prolonged microscopic activity and to assess the benefits of minibreaks. A prospective crossover study was performed on 17 healthy volunteers sitting still while looking down a bench with and without the Ipswich Microbreak Technique (IMT). We used a subjective measure of time to fatigue and pain in the neck and shoulder regions as well as objective readings from a surface electromyogram (sEMG)...
May 4, 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29674008/applying-systems-ergonomics-methods-in-sport-a-systematic-review
#2
Adam Hulme, Jason Thompson, Katherine L Plant, Gemma J M Read, Scott Mclean, Amanda Clacy, Paul M Salmon
INTRODUCTION: As sports systems become increasingly more complex, competitive, and technology-centric, there is a greater need for systems ergonomics methods to consider the performance, health, and safety of athletes in context with the wider settings in which they operate. Therefore, the purpose of this systematic review was to identify and critically evaluate studies which have applied a systems ergonomics research approach in the context of sports performance and injury management...
April 16, 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29650223/surgeons-muscle-load-during-robotic-assisted-laparoscopy-performed-with-a-regular-office-chair-and-the-preferred-of-two-ergonomic-chairs-a-pilot-study
#3
T Dalager, P T Jensen, T S Winther, T R Savarimuthu, A Markauskas, O Mogensen, K Søgaard
Surgeons work in awkward work postures and have high precision demands - well-known risk factors for musculoskeletal pain. Robotic-assisted laparoscopy is expected to be less demanding compared to conventional laparoscopy; however, studies indicate that robotic-assisted laparoscopy is also associated with poor ergonomics and musculoskeletal pain. The ergonomic condition in the robotic console is partially dependent upon the chair provided, which often is a regular office chair. Our study quantified and compared the muscular load during robotic-assisted laparoscopy using one of two custom built ergonomic chairs and a regular office chair...
April 9, 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29609835/using-a-systems-approach-to-evaluate-a-circulating-nurse-s-work-patterns-and-workflow-disruptions
#4
David M Neyens, Sara Bayramzadeh, Kenneth Catchpole, Anjali Joseph, Kevin Taaffe, Katherina Jurewicz, Amin Khoshkenar, Dee San
The physical environment affects how work is done in operating rooms (OR). The circulating nurse (CN), in particular, requires access to and interacts with materials, equipment, and technology more than other OR team members. Naturalistic study of CN behavior is therefore valuable in assessing how OR space and physical configuration influences work patterns and disruptions. This study evaluated the CNs' work patterns and flow disruptions (FD) by analyzing 25 surgeries across three different ORs. The OR layouts were divided into transitional and functional zones, and the work of CNs was categorized into patient, equipment, material, and information tasks...
March 30, 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29525268/assessing-the-influence-of-a-passive-upper-extremity-exoskeletal-vest-for-tasks-requiring-arm-elevation-part-i-expected-effects-on-discomfort-shoulder-muscle-activity-and-work-task-performance
#5
Sunwook Kim, Maury A Nussbaum, Mohammad Iman Mokhlespour Esfahani, Mohammad Mehdi Alemi, Saad Alabdulkarim, Ehsan Rashedi
Use of exoskeletal vests (designed to support overhead work) can be an effective intervention approach for tasks involving arm elevation, yet little is known on the potential beneficial impacts of their use on physical demands and task performance. This laboratory study (n = 12) evaluated the effects of a prototype exoskeletal vest during simulated repetitive overhead drilling and light assembly tasks. Anticipated or expected benefits were assessed, in terms of perceived discomfort, shoulder muscle activity, and task performance...
March 7, 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29525267/are-gestures-worth-a-thousand-words-verbal-and-nonverbal-communication-during-robot-assisted-surgery
#6
Judith Tiferes, Ahmed A Hussein, Ann Bisantz, D Jeffery Higginbotham, Mohamed Sharif, Justen Kozlowski, Basel Ahmad, Ryan O'Hara, Nicole Wawrzyniak, Khurshid Guru
Communication breakdowns in the operating room (OR) have been linked to errors during surgery. Robot-assisted surgery (RAS), a new surgical technology, can lead to new challenges in communication owing to the remote location of the surgeon away from the patient and bedside assistants. Nevertheless, few studies have studied communication strategies during RAS. In this study, 11 robot-assisted radical prostatectomies were recorded and the interaction events between the surgeon and two bedside surgical team members were categorized by modality (verbal/nonverbal), topic, and pair (sender and receiver)...
March 7, 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29525266/assessing-the-influence-of-a-passive-upper-extremity-exoskeletal-vest-for-tasks-requiring-arm-elevation-part-ii-unexpected-effects-on-shoulder-motion-balance-and-spine-loading
#7
Sunwook Kim, Maury A Nussbaum, Mohammad Iman Mokhlespour Esfahani, Mohammad Mehdi Alemi, Bochen Jia, Ehsan Rashedi
Adopting a new technology (exoskeletal vest designed to support overhead work) in the workplace can be challenging since the technology may pose unexpected safety and health consequences. A prototype exoskeletal vest was evaluated for potential unexpected consequences with a set of evaluation tests for: usability (especially, donning & doffing), shoulder range of motion (ROM), postural control, slip & trip risks, and spine loading during overhead work simulations. Donning/doffing the vest was easily done by a wearer alone...
March 7, 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29519498/a-study-of-laparoscopic-instrument-use-during-colorectal-surgery
#8
Eoin J White, Muireann McMahon, Michael T Walsh, J Calvin Coffey, Leonard W O'Sullivan
The aim of this study was to quantify laparoscopic instrument use and actions of both limbs during a sample of common colorectal surgical procedures. A method was devised using Observer XT software to code video recordings. Anonymised HD video recordings of nine laparoscopic colorectal procedures performed by a single surgeon were analysed. We determined the percentage and frequency of instrument use and limb actions throughout the total laparoscopic surgical duration, as well as the duration of instrument inactivity...
March 5, 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29482840/characteristics-of-team-briefings-in-gynecological-surgery
#9
Katherine L Forsyth, Emily A Hildebrand, M Susan Hallbeck, Russell J Branaghan, Renaldo C Blocker
Preoperative briefings have been proven beneficial for improving team performance in the operating room. However, there has been minimal research regarding team briefings in specific surgical domains. As part of a larger project to develop a briefing structure for gynecological surgery, the study aimed to better understand the current state of pre-operative team briefings in one department of an academic hospital. Twenty-four team briefings were observed and video recorded. Communication was analyzed and social network metrics were created based on the team member verbal interactions...
February 24, 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29764620/hand-forces-exerted-by-long-term-care-staff-when-pushing-wheelchairs-on-compliant-and-non-compliant-flooring
#10
Chantelle C Lachance, Alexandra M B Korall, Colin M Russell, Fabio Feldman, Stephen N Robinovitch, Dawn C Mackey
Purpose-designed compliant flooring and carpeting have been promoted as a means for reducing fall-related injuries in high-risk environments, such as long-term care. However, it is not known whether these surfaces influence the forces that long-term care staff exert when pushing residents in wheelchairs. We studied 14 direct-care staff who pushed a loaded wheelchair instrumented with a triaxial load cell to test the effects on hand force of flooring overlay (vinyl versus carpet) and flooring subfloor (concrete versus compliant rubber [brand: SmartCells])...
September 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29764619/effects-of-unexpected-visual-motion-on-postural-sway-and-motion-sickness
#11
Mark Dennison, Michael D'Zmura
Motion sickness is thought to occur when the brain's assumptions about incoming sensory information do not match the actual signals received. These signals must involve the vestibular system for motion sickness to occur. In this paper, we describe an experiment in which subjects experienced unexpected visual motions, or perturbations, as they navigated a virtual environment (VE) while standing and wearing a head mounted display (HMD) or while viewing a monitor. We found that postural instability, as measured by a balance board, increased with time only when perturbations were present...
September 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29764618/investigating-daily-fatigue-scores-during-two-week-offshore-day-shifts
#12
Vanessa Riethmeister, Ute Bültmann, Marijke Gordijn, Sandra Brouwer, Michiel de Boer
OBJECTIVES: This study examined daily scores of fatigue and circadian rhythm markers over two-week offshore day shift periods. METHODS: A prospective cohort study among N = 60 offshore day-shift workers working two-week offshore shifts was conducted. Offshore day shifts lasted from 07:00 - 19:00 h. Fatigue was measured objectively with pre- and post-shift scores of the 3-minute psychomotor vigilance tasks (PVT-B) parameters (reaction times, number of lapses, errors and false starts) and subjectively with pre- and post-shift Karolinska Sleepiness Scale (KSS) ratings...
September 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29764617/evaluation-of-commercially-available-seat-suspensions-to-reduce-whole-body-vibration-exposures-in-mining-heavy-equipment-vehicle-operators
#13
Jeong Ho Kim, Luz S Marin, Jack T Dennerlein
As mining vehicle operators are exposed to high level of Whole body vibration (WBV) for prolonged periods of time, approaches to reduce this exposure are needed for the specific types of exposures in mining. Although various engineering controls (i.e. seat suspension systems) have been developed to address WBV, there has been lack of research to systematically evaluate these systems in reducing WBV exposures in mining heavy equipment vehicle settings. Therefore, this laboratory-based study evaluated the efficacy of different combinations of fore-aft (x-axis), lateral (y-axis), and vertical (z-axis) suspensions in reducing WBV exposures...
September 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29764616/uncertainty-in-monetary-cost-estimates-for-assessing-working-postures-using-inclinometry-observation-or-self-report
#14
Amanda Waleh Åström, Marina Heiden, Svend Erik Mathiassen, Annika Strömberg
OBJECTIVE: To assess uncertainty in cost estimates for collecting posture data by inclinometry, observations and self-report. METHOD: In a study addressing physical workloads at a paper mill, costs were calculated for measuring postures of twenty-eight workers during three shifts. Uncertainty in costs was assessed for all three methods as the range between an assumed best case (lowest cost) and worst case (highest cost) using scenario analysis. RESULTS: The cost for observation was larger, but also more uncertain (€16506 and €89552 in the best and worst case, respectively) than that of inclinometry (€7613 - €45896)...
September 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29764615/comfort-evaluation-of-a-subject-specific-seating-interface-formed-by-vibrating-grains
#15
Shenghui Liu, Yunxia Qu, Shujun Hou, Kai Li, Xinye Li, Yang Zhai, Yunxiao Ji
Sitting is the most common posture for work in offices, and spinal cord injury (SCI) patients who are wheelchair dependent spend 10.6 h per day seated in wheelchairs. Thus, the comfort of subject-specific interfaces is increasingly important for the well-being of patients and office workers. This paper introduces a new method of forming a subject-specific interface, based on vibrating grains. Twenty subjects (10 females and 10 males) participated in the sitting test. Interface comfort was evaluated using the pressure distribution and subjective rating methods...
September 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29764614/use-and-physiological-responses-of-portable-dynamic-office-workstations-in-an-occupational-setting-a-field-study
#16
Vera Schellewald, Jens Kleinert, Rolf Ellegast
OBJECTIVE: The aim of this study was to investigate the use of two types of dynamic workstations (Deskbike, activeLife Trainer) and their effects on physiological activation in an occupational setting. METHODS: 30 employees were given access to the devices for 28 days. Frequency and duration of borrowing and use was recorded by a Chipcard-system. Physiological activation (energy expenditure, heart rate) while working in a seated position and using the workstations was measured with the activity tracker Fitbit Charge HR...
September 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29764613/the-joint-use-of-resilience-engineering-and-lean-production-for-work-system-design-a-study-in-healthcare
#17
Caroline Brum Rosso, Tarcisio Abreu Saurin
Although lean production (LP) has been increasingly adopted in healthcare systems, its benefits often fall short of expectations. This might be partially due to the failure of lean to account for the complexity of healthcare. This paper discusses the joint use of principles of LP and resilience engineering (RE), which is an approach for system design inspired by complexity science. Thus, a framework for supporting the design of socio-technical systems, which combines insights from LP and RE, was developed and tested in a system involving a patient flow from an emergency department to an intensive care unit...
September 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29764612/the-effect-of-a-novel-square-profile-hand-rim-on-propulsion-technique-of-wheelchair-tennis-players
#18
Sonja de Groot, Femke Bos, Jorine Koopman, Aldo E Hoekstra, Riemer J K Vegter
The purpose of this study was to investigate the effect of a square-profile hand rim (SPR) on propulsion technique of wheelchair tennis players. Eight experienced wheelchair tennis players performed two sets of three submaximal exercise tests and six sprint tests on a wheelchair ergometer, once with a regular rim (RR) and once with a SPR. Torque and velocity were measured continuously and power output and timing variables were calculated. No significant differences were found in propulsion technique between the RR and SPR during the submaximal tests...
September 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29764611/regenerative-braking-failures-in-battery-electric-vehicles-and-their-impact-on-the-driver
#19
Peter Cocron, Isabel Neumann, Maria Kreußlein, Daniel Wanner, Maxim Bierbach, Josef F Krems
A unique feature of battery electric vehicles (BEV) is their regenerative braking system (RBS) to recapture kinetic energy in deceleration maneuvers. If such a system is triggered via gas pedal, most deceleration maneuvers can be executed by just using this pedal. This impacts the driving task as different deceleration strategies can be applied. Previous research has indicated that a RBS failure leading to a sudden reduced deceleration represents an adverse event for BEV drivers. In the present study, we investigated such a failure's impact on the driver's evaluation and behavior...
September 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29764610/the-effect-of-steering-system-linearity-simulator-motion-and-truck-driving-experience-on-steering-of-an-articulated-tractor-semitrailer-combination
#20
Barys Shyrokau, Joost De Winter, Olaf Stroosma, Chris Dijksterhuis, Jan Loof, Rene van Paassen, Riender Happee
Steering systems of trucks consist of many linkages, which introduce nonlinearities that may negatively affect steering performance. Nowadays, it is possible to equip steering systems with actuators that provide artificial steering characteristics. However, before new steering systems are deployed in real vehicles, evaluation in a safe and controlled simulator environment is recommended. A much-debated question is whether experiments need to be performed in a motion-base simulator or whether a fixed-base simulator suffices...
September 2018: Applied Ergonomics
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