Searched for: author:"van Dieën, J.H."
(1 - 20 of 74)

Pages

document
Brouwer, N.P. (author), Tabasi, A. (author), Moya-Esteban, A. (author), Sartori, M. (author), van Dijk, W. (author), Kingma, I. (author), van Dieen, J.H. (author)
The effectiveness of exoskeletons could be enhanced by incorporating low back muscle fatigue estimates in their control. The aim of the present study was to evaluate whether low back muscle fatigue can be estimated using the spectral content of trunk extensor muscle high-density EMG (HDEMG) by considering the motor unit action potential...
bookPart 2022
document
Tabasi, A. (author), Lazzaroi, M. (author), Brouwer, N.P. (author), Kingma, I. (author), van Dijk, W. (author), de Looze, M.P. (author), Toxiri, S. (author), Ortiz, J. (author), van Dieen, J.H. (author)
Estimation of low-back load can be used to determine the assistance to be provided by an actuated back-support exoskeleton. To this end, an EMG-driven muscle model and a regression model can be implemented. The goal of the regression model is to reduce the number of required sensors for load estimation. Both models need to be calibrated. This...
bookPart 2022
document
Kingma, B.R.M. (author), Koopmans, A.S. (author), de Looze, M.P. (author), van Dieen, J.H. (author)
To evaluate the biomechanical effect of exoskeletons during lifting, three studies were performed to compare spine compression during lifting without and with three exoskeletons (Laevo, Robo-Mate, SPEXOR). In these studies, participants (11, 10 and 10, respectively) lifted boxes (10, 15 and 10 kg, respectively) from ankle height. Spine...
bookPart 2022
document
Koopman, A.S. (author), Naf, M. (author), Baltrusch, S.J. (author), Kingma, I. (author), Rodriguez-Guerrero, C. (author), Babic, J. (author), de Looze, M.P. (author), van Dieën, J.H. (author)
The number one cause of disability in the world is low-back pain, with mechanical loading as one of the major risk factors. To reduce mechanical loading, exoskeletons have been introduced in the workplace. Substantial reductions in back muscle activity were found when using the exoskeleton during static bending and manual materials handling....
article 2020
document
Baltrusch, S.J. (author), Houdijk, H. (author), van Dieën, J.H. (author), de Kruif, J.T.C.M. (author)
Purpose Determinants of successfully introducing passive exoskeletons in the working environment to decrease mechanical loading on the back, are acceptability of the device to management and employees, including self-efficacy of employees when using the device. Therefore, the aim of this study was to assess self-efficacy of employees with low...
article 2020
document
Tabasi, A. (author), Kingma, I. (author), de Looze, M.P. (author), van Dijk, W. (author), Koopman, A.S. (author), van Dieën, J.H. (author)
Back support exoskeletons are designed to prevent work-related low-back pain by reducing mechanical loading. For actuated exoskeletons, support based on moments actively produced by the trunk muscles appears a viable approach. The moment can be estimated by a biomechanical model. However, one of the main challenges here is the feasibility of...
article 2020
document
Koopman, A.S. (author), Kingma, I. (author), de Looze, M.P. (author), van Dieën, J.H. (author)
Low-back pain is the number one cause of disability in the world, with mechanical loading as one of the major risk factors. Exoskeletons have been introduced in the workplace to reduce low back loading. During static forward bending, exoskeletons have been shown to reduce back muscle activity by 10% to 40%. However, effects during dynamic...
article 2020
document
Koopman, A.S. (author), Toxiri, S. (author), Power, V. (author), Kingma, I. (author), van Dieën, J.H. (author), Ortiz, J. (author), de Looze, M.P. (author)
With mechanical loading as the main risk factor for LBP, exoskeletons (EXO)are designed to reduce the load on the back by taking over part of the moment normally generated by back muscles. The present study investigated the effect of an active exoskeleton, controlled using three different control modes (INCLINATION, EMG & HYBRID), on spinal...
article 2019
document
Koopman, A.S. (author), Kingma, I. (author), Faber, G.S. (author), de Looze, M.P. (author), van Dieën, J.H. (author)
With mechanical loading as the main risk factor for LBP in mind, exoskeletons are designed to reduce the load on the back by taking over a part of the required moment. The present study assessed the effect of a passive exoskeleton on back and abdominal muscle activation, hip and lumbar flexion and on the contribution of both the human and the...
article 2019
document
Huysmans, M.A. (author), Eijckelhof, B.H.W. (author), Bruno Garza, J.L. (author), Coenen, P. (author), Blatter, B.M. (author), Johnson, P.W. (author), van Dieën, J.H. (author), van der Beek, A.J. (author), Dennerlein, J.T. (author)
Objectives: Alternative techniques to assess physical exposures, such as prediction models, could facilitate more efficient epidemiological assessments in future large cohort studies examining physical exposures in relation to work-related musculoskeletal symptoms.The aim of this study was to evaluate two types of models that predict arm-wrist...
article 2018
document
Könemann, R. (author), Bosch, T. (author), Kingma, I. (author), van Dieën, J.H. (author), de Looze, M.P. (author)
In this study the effects of horizontal bin locations in an order picking workstation on upper arm elevation, trunk inclination and hand use were investigated. Eight subjects moved (self-paced) light or heavy products (0.2 and 3.0 kg) from a central product bin to an inner or outer order bin (at 60 or 150 cm) on the left or right side of the...
article 2015
document
Coenen, P. (author), Mathiassen, S.E. (author), Kingma, I. (author), Boot, C.R.L. (author), Bongers, P.M. (author), van Dieën, J.H. (author)
Objectives: Exposure-outcome studies, for instance on work-related low-back pain (LBP), often classify workers into groups for which exposures are estimated from measurements on a sample of workers within or outside the specific study. The present study investigated the influence on bias and power in exposure-outcome associations of the sizes of...
article 2015
document
Coenen, P. (author), Kingma, I. (author), Boot, C.R.L. (author), Bongers, P.M. (author), van Dieën, J.H. (author)
The trade-off between feasibility and accuracy of measurements of physical exposure at the workplace has often been discussed, but is unsufficiently understood. We therefore explored the effect of two low-back loading measurement tools with different accuracies on exposure estimates and their associations with low-back pain (LBP). Low-back...
article 2015
document
Eijckelhof, B.H.W. (author), Huysmans, M.A. (author), Blatter, B.M. (author), Leider, P.C. (author), Johnson, P.W. (author), van Dieën, J.H. (author), Dennerlein, J.T. (author), van der Beek, A.J. (author)
This field study examined associations between workplace stressors and office workers' computer use patterns. We collected keyboard and mouse activities of 93 office workers (68F, 25M) for approximately two work weeks. Linear regression analyses examined the associations between self-reported effort, reward, overcommitment, and perceived stress...
article 2014
document
Coenen, P. (author), Kingma, I. (author), Boot, C.R.L. (author), Bongers, P.M. (author), van Dieën, J.H. (author)
Objectives: Reported associations of physical exposures during work (eg, lifting, trunk flexion or rotation) and low-back pain (LBP) are rather inconsistent. Mechanical back loads (eg, moments on the low back) as a result of exposure to abovementioned risk factors have been suggested to be important as such loads provide a more direct...
article 2014
document
Eijckelhof, B.H.W. (author), Bruno Garza, J.L. (author), Huysmans, M.A. (author), Blatter, B.M. (author), Johnson, P.W. (author), van Dieën, J.H. (author), van der Beek, A.J. (author), Dennerlein, J.T. (author)
Objective Office workers with high levels of overcommitment and low levels of reward are thought to be more prone to arm-wrist-hand symptoms, possibly through a higher internal physical exposure. The aim of this study was to examine the effects of high overcommitment and low reward on (i) forearm muscle activity, (ii) wrist posture and...
article 2013
document
Coenen, P. (author), Kingma, I. (author), Boot, C.R.L. (author), Bongers, P.M. (author), van Dieën, J.H. (author)
Valid and reliable low-back load assessment tools that can be used in field situations are needed for epidemiologic studies and for ergonomic practice. The aim of this study was to assess the inter-rater reliability of a low-back load video-analysis method in a field setting.Five raters analyzed 50 work site manual material handling tasks of 14...
article 2013
document
Coenen, P. (author), Kingma, I. (author), Boot, C.R.L. (author), Twisk, J.W.R. (author), Bongers, P.M. (author), van Dieën, J.H. (author)
Purpose Much research has been performed on physical exposures during work (e.g. lifting, trunk flexion or body vibrations) as risk factors for low back pain (LBP), however results are inconsistent. Information on the effect of doses (e.g. spinal force or low back moments) on LBP may be more reliable but is lacking yet. The aim of the present...
article 2013
document
Coenen, P. (author), Mathiassen, S.E. (author), Kingma, I. (author), Boot, C.R.L. (author), Bongers, P.M. (author), van Dieen, J.H. (author)
Session: 14. Exposure Assessment II
conference paper 2013
document
Coenen, P. (author), Kingma, I. (author), Boot, C.R.L. (author), Douwes, M. (author), Bongers, P.M. (author), van Dieën, J.H. (author)
Work-related musculoskeletal pain (MSP) risk assessments by trained observers are often used in ergonomic practice; however, the validity may be questionable. We investigated the predictive value of work-site MSP risk estimates in a prospective cohort study of 1745 workers. Trained observers estimated the risk of MSP (neck, shoulder or low-back...
article 2012
Searched for: author:"van Dieën, J.H."
(1 - 20 of 74)

Pages