Searched for: subject%3A%22Electromyography%22
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Toxiri, S. (author), Koopman, A.S. (author), Lazzaroni, M. (author), Ortiz, J. (author), Power, V. (author), de Looze, M.P. (author), O'Sullivan, L. (author), Caldwell, D.G. (author)
Active exoskeletons are potentially more effective and versatile than passive ones, but designing them poses a number of additional challenges. An important open challenge in the field is associated to the assistive strategy, by which the actuation forces are modulated to the user's needs during the physical activity. This paper addresses this...
article 2018
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Luger, T. (author), Bosch, T. (author), Hoozemans, M.J.M. (author), Veeger, D.H.E.J. (author), de Looze, M.P. (author)
Shoulder disorders comprise a large part of work-related musculoskeletal disorders. Risk factors, such as repetitiveness and monotony, may cause muscle fatigue and be attenuated by task rotation. We investigated rotation between a dynamic box-lifting task and a relatively static pick-and-place task and aimed to determine whether (1) a high...
article 2016
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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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Luger, T. (author), Bosch, T. (author), Hoozemans, M. (author), de Looze, M.P. (author), Veeger, D. (author)
Work-related musculoskeletal disorders are increasing due to industrialisation of work processes. Task variation has been suggested as potential intervention. The objectives of this study were to investigate, first, the influence of task variation on electromyographic (EMG) manifestations of shoulder muscle fatigue and discomfort; second,...
article 2015
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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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Luger, T. (author), Bosch, T. (author), Veeger, D. (author), de Looze, M. (author)
Task variation has been proposed to reduce shoulder fatigue resulting from repetitive hand-arm tasks. This review analyses the effect of task variation, both 'temporal (i.e. change of work-rest ratio)' and 'activity (i.e. job rotation)' variation, on physiological responses, endurance time (ET) and subjective feelings. Pubmed was searched and...
article 2014
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van Rooij, L. (author), Elrofai, H.B.H. (author), Philippens, M.M.G.M. (author), Daanen, H.A.M. (author)
It is important to understand human kinematics and muscle activation patterns in emergency maneuvers for the design of safety systems and for the further development of human models. The objective of this study was to quantify kinematic behavior and muscle activation in simulated steering tests in several realistic conditions. In total 108 tests...
article 2013
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Botter, J. (author), Burford, E.M. (author), Commissaris, D. (author), Könemann, R. (author), Mastrigt, S.H.V. (author), Ellegast, R.P. (author)
The aim of this research paper was to investigate the effect, both biomechanically and physiologically, of two dynamic workstations currently available on the commercial market. The dynamic workstations tested, namely the Treadmill Desk by LifeSpan and the LifeBalance Station by RightAngle, were compared to the more conventional seated and...
conference paper 2013
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Nederlandse Organisatie voor Toegepast-Natuurwetenschappelijk Onderzoek (author), Bosch, T. (author)
doctoral thesis 2011
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Bosch, T. (author), Mathiassen, S.E. (author), Visser, B. (author), de Looze, M.D. (author), van Dieën, J.V. (author)
This study investigated the effect of work pace on workload, motor variability and fatigue during light assembly work. Upper extremity kinematics and electromyography (EMG) were obtained on a cycle-to-cycle basis for eight participants during two conditions, corresponding to "normal" and "high" work pace according to a predetermined time system...
article 2011
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Bosch, T. (author), de Looze, M.P. (author), Kingma, I. (author), Visser, B. (author), van Dieën, J.H. (author), TNO Kwaliteit van Leven (author)
The purpose of this study was to determine whether objective electromyographical manifestations of muscle fatigue develop in the upper trapezius muscle in two assembly tasks involving contractions of different low-intensity levels (8% and 12% MVC) and whether these indications of fatigue are homogeneously distributed across different muscle...
article 2009
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de Looze, M.P. (author), Bosch, T. (author), van Dieën, J. (author), TNO Kwaliteit van Leven (author)
Shoulder fatigue has been suggested to be a useful risk indicator for shoulder disorders in repetitive, low-force work tasks. In contrast to high-force or purely isometric tasks, it is unclear whether measurable fatigue develops in realistic low-force work. The question addressed in this review was: 'Is there evidence of objective signs of...
article 2009
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van Dieën, J.H. (author), Putten, E.P. (author), Kingma, I. (author), de Looze, M.P. (author), TNO Kwaliteit van Leven (author)
This study was designed to determine whether trunk extensor fatigue occurs during low-level activity and whether this is associated with a drop in muscle tissue oxygenation. Electromyography (EMG) feedback was used to impose constant activity in a part of the trunk extensor muscles. We hypothesized that electromyographic manifestations of...
article 2009
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Faber, G.S. (author), Kingma, I. (author), Delleman, N. (author), van Dieën, J. (author)
This study investigated the effects of ship motion on peak spinal loading during lifting. All measurements were done on a ship at sea. In 1-min trials, which were repeated over a wide range of sailing conditions, subjects lifted an 18 kg box five times. Ship motion, whole body kinematics, ground reaction forces and electromyography were measured...
article 2008
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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 Dieën, J.H. (author), TNO Kwaliteit van Leven (author)
It has been suggested that fatigue affects proprioception and consequently movement accuracy, the effects of which may be counteracted by increased muscle activity. To determine the effects of fatigue on tracking performance and muscle activity in the M. extensor carpi radialis (ECR), 11 female participants performed a 2-min tracking task with a...
article 2008
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Bosch, T. (author), de Looze, M.P. (author), van Dieën, J.H. (author), TNO Kwaliteit van Leven (author)
Optimization of the temporal aspects of task design requires a better understanding of the development of muscle fatigue in the neck and shoulder region over time. The objective of the study was to investigate this in two production companies and to determine the relationship between objective and subjective estimates of fatigue. Indicators of...
article 2007
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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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Huysmans, M.A. (author), de Looze, M.P. (author), Hoozemans, M.J.M. (author), van der Beek, A.J. (author), van Dieën, J.H. (author), TNO Kwaliteit van Leven (author)
The study was designed to determine the effect of joystick handle size and (display-control) gain at two levels of required task precision on performance and physical load on crane operators. Eight experienced crane operators performed a simulated crane operation task on a computer by use of a joystick with either a short or a large handle. The...
article 2006
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Visser, B. (author), Nielsen, P.K. (author), de Kraker, H. (author), Smits, M. (author), Jensen, B.R. (author), Veeger, D. (author), van Dieën, J.H. (author), TNO Kwaliteit van Leven (author), KvL (author)
The object of the current study was to determine whether static contraction of proximal musculature has an effect on the blood flow more distally in the upper extremity. Static contractions of muscles in the neck shoulder region at three levels (relaxed, shoulders elevated and shoulders elevated loaded with 4.95 kg each) were combined with...
article 2006
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Visser, B. (author), de Looze, M.P. (author), de Graaff, M.P. (author), van Dieën, J.H. (author)
The objective of the present study was to gain insight into the effects of precision demands and mental pressure on the load of the upper extremity. Two computer mouse tasks were used: an aiming and a tracking task. Upper extremity loading was operationalized as the myo-electric activity of the wrist flexor and extensor and of the trapezius...
article 2004
Searched for: subject%3A%22Electromyography%22
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