Searched for: subject:"Muscle%5C+activities"
(1 - 15 of 15)
document
de Vries, A.W. (author), Krause, F. (author), de Looze, M. (author)
The supportive effect of arm-support exoskeletons has been mainly studied for single postures or movements. The aim of this study is to analyse the effect of such an exoskeleton on shoulder muscle activity and perceived exertion, in six tasks of plasterers, each including multiple arm movements. The tasks of ‘applying gypsum’, ‘screeding’ and ...
article 2021
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
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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
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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
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Huysamen, K. (author), Bosch, T. (author), de Looze, M. (author), Stadler, K.S. (author), Graf, E. (author), O'Sullivan, L.W. (author)
The aim of this study was to evaluate the effect of a passive upper body exoskeleton on muscle activity, perceived musculoskeletal effort, local perceived pressure and subjective usability for a static overhead task. Eight participants (4 male, 4 female) held a load (0 kg and 2 kg) three times overhead for a duration of 30 s each, both with and...
article 2018
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Huysamen, K. (author), de Looze, M.P. (author), Bosch, T. (author), Ortiz, J. (author), Toxin, S. (author), O'Sullivan, L.W. (author)
The aim of this study was to evaluate the effect of an industrial exoskeleton on muscle activity, perceived musculoskeletal effort, measured and perceived contact pressure at the trunk, thighs and shoulders, and subjective usability for simple sagittal plane lifting and lowering conditions. Twelve male participants lifted and lowered a box of 7...
article 2018
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Luger, T. (author), Mathiassen, S.E. (author), Bosch, T. (author), Hoozemans, M. (author), Douwes, M. (author), Veeger, D.J. (author), de Looze, M.P. (author)
Occupational applications. In repetitive work, more physical variation is believed to reduce the risk of eventually developing musculoskeletal disorders. We investigated the extent to which workstation designs leading to more variation in upper arm postures during a pick-and-place task influenced outcomes of relevance to musculoskeletal disorder...
article 2017
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Luger, T. (author), Mathiassen, S.E. (author), Srinivasan, D. (author), Bosch, T. (author)
Objectives: This study investigated the extent to which controlled changes in work pace in a cyclic pick-and-place task influence upper extremity kinematics and muscle activity, and whether an effect depends on working height. Methods: Thirteen participants performed the task for 4 min at each of five work paces ranging from 8 to 12 cycles·min-1...
article 2017
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Bosch, T. (author), van Eck, J. (author), Knitel, K. (author), de Looze, M.P. (author)
Exoskeletons may form a new strategy to reduce the risk of developing low back pain in stressful jobs. In the present study we examined the potential of a so-called passive exoskeleton on muscle activity, discomfort and endurance time in prolonged forward-bended working postures.Eighteen subjects performed two tasks: a simulated assembly task...
article 2016
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Hiemstra-van Mastrigt, S. (author), Kamp, I. (author), van Veen, S.A.T. (author), Vink, P. (author), Bosch, T. (author)
New technologies have led to an increasingly sedentary lifestyle. Sedentary behaviour is characterised by physical inactivity and is associated with several health risks. This excessive sitting does not only take place in the office or at home, but also during daily commute. Therefore, BMW AG developed an active seating system for the back seat...
article 2015
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Kuijt-Evers, L.F.M. (author), Könemann, R. (author), Hallbeck, M.S. (author)
The aim of the current study was to investigate the effect of the canopy shape of an umbrella on physical load when holding the umbrella in different circumstances. For this purpose, thirteen subjects participated in this study and muscle activity of seven muscles of the upper limb (including the forearm) was measured for 5 wind speeds (4, 5, 6,...
article 2013
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Ellegast, R.P. (author), Kraft, K. (author), Groenesteijn, L. (author), Krause, F. (author), Berger, H. (author), Vink, P. (author)
Prolonged and static sitting postures provoke physical inactivity at VDU workplaces and are therefore discussed as risk factors for the musculoskeletal system. Manufacturers have designed specific dynamic office chairs featuring structural elements which promote dynamic sitting and therefore physical activity. The aim of the present study was to...
article 2012
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Huysmans, M.A. (author), Hoozemans, M.J.M. (author), van der Beek, A.J. (author), de Looze, M.P. (author), van Dien, J.H. (author)
The authors investigated how tracking performance, submovement organization, pen pressure and muscle activity in forearm and shoulder muscles were affected by target size in a 2D tracking task performed with a pen on a digitizer tablet. Twenty-six subjects took part in an experiment, in which either a small dot or a large dot was tracked, while...
article 2012
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Kuijt-Evers, L.F.M. (author), Bosch, T. (author), Huysmans, M.A. (author), de Looze, M.P. (author), Vink, P. (author), TNO Kwaliteit van Leven (author)
In the current study, the relationship between objective measurements and subjective experienced comfort and discomfort in using handsaws was examined. Twelve carpenters evaluated five different handsaws. Objective measures of contact pressure (average pressure, pressure area and pressure-time (P-t) integral) in static and dynamic conditions,...
article 2007
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de Looze, M.P. (author), Steenhuizen, S. (author), Boeken-Kruger, M.C. (author), Baten, C.T.M. (author), Kingma, I. (author), van Dieën, J.H. (author)
People who know the actual mass of an object to be lifted normally prepare themselves before attempting a lift to control the movement and to minimize low back loading. In this study, the trunk muscular reactions and low back torque were investigated in the situation in which the individual did not know the actual mass but only had some idea of...
article 2000
Searched for: subject:"Muscle%5C+activities"
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