Searched for: subject%3A%22Muscles%22
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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
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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
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Brouwer, N.P. (author), Tabasi, A. (author), Kingma, I. (author), Stegeman, D.F. (author), van Dijk, W. (author), Moya-Esteban, A. (author), Sartori, M. (author), van Dieën, J.H. (author)
While a decreasing spectral content of surface electromyography reflects low back muscle fatigue development, reliability of these decreases may be insufficient. Decreasing frequency content is largely determined by decreasing average motor unit action potential conduction velocities (CV), which is considered a more direct measure of muscle...
article 2022
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Rafiq, R. (author), Aleva, F.E. (author), Schrumpf, J.A. (author), Daniels, J.M. (author), Bet, P.M. (author), Boersma, W.G. (author), Bresser, P. (author), Spanbroek, M. (author), Lips, P. (author), van den Broek, T.J. (author), Keijser, B.J.F. (author), van der Ven, J.A.M. (author), Hiemstra, P.S. (author), den Heijer, M. (author), de Jongh, R.T. (author), PRECOVID-study group, (author)
Background. Vitamin D deficiency is frequently found in patients with chronic obstructive pulmonary disease (COPD). Vitamin D has antimicrobial, anti-inflammatory, and immunomodulatory effects. Therefore, supplementation may prevent COPD exacerbations, particularly in deficient patients. Objectives. We aimed to assess the effect of vitamin D...
article 2022
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Kessels, I. (author), Koopman, B. (author), Verdonschot, N. (author), Marra, M. (author), Gijsbertse, K. (author)
The performance of military tasks is often exacerbated by additional load carriage, leading to increased physical demand. Previous studies showed that load carriage may lead to increased risk of developing musculoskeletal injuries, a reduction in task speed and mobility, and overall performance degradation. However, these studies were limited to...
article 2021
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de Looze, M. (author), Krause, F. (author)
Let’s say you’re running a small company in the manufacturing or construction industries. Perhaps your employees are exposed to heavy work: day-after-day they handle materials, they carry tools, or they work with their back bent or their arms elevated. They get fatigued, which may limit their productivity, and some workers may even get injured,...
article 2021
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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
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van den Hoek, A.M. (author), de Jong, J.C.B.C. (author), Worms, N. (author), van Nieuwkoop, A. (author), Voskuilen, M. (author), Menke, A.L. (author), Lek, S. (author), Caspers, M.P.M. (author), Verschuren, L. (author), Kleemann, R. (author)
Background. Non-alcoholic steatohepatitis (NASH) has become one of the most common liver diseases and is still without approved pharmacotherapy. Lifestyle interventions using exercise and diet change remain the current treatment of choice and even a small weight loss (5–7%) can already have a beneficial effect on NASH. However, the underlying...
article 2021
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Keemink, A.Q.L. (author), Brug, T.J.H. (author), van Asseldonk, E.H.F. (author), Wu, A.R. (author), van der Kooij, H. (author)
Active prosthetic and orthotic devices have the potential to increase quality of life for individuals with impaired mobility. However, more research into human-like control methods is needed to create seamless interaction between device and user. In forward simulations the reflex-based neuromuscular model (RNM) by Song and Geyer shows promising...
article 2021
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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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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
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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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Memelink, R. (author), Bongers, A. (author), Pasman, W. (author), van Rijmenam, M. (author), Wopereis, S. (author), Verlaan, G. (author), de Vogel Van den Bosch, J (author), Weijs, P.J.M. (author)
Objectives. Weight loss is a key element in the treatment of obesity and type 2 diabetes (T2D), but also a risk factor for lean mass (LM) loss in older adults. We evaluated whether a whey protein drink enriched with leucine and vitamin D preserved LM during 3-month lifestyle intervention and whether effects sustained during 6 months follow-up...
article 2020
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Ruiz-Zapata, A.M. (author), Heinz, A. (author), Kerkhof, M.H. (author), van de Westerlo-van Rijt, C. (author), Schmelzer, C.E.H. (author), Stoop, R. (author), Kluivers, K.B. (author), Oosterwijk, E. (author)
Fibroblast to myofibroblast differentiation is a key feature of wound-healing in soft tissues, including the vagina. Vaginal fibroblasts maintain the integrity of the vaginal wall tissues, essential to keep pelvic organs in place and avoid pelvic organ prolapse (POP). The micro-environment of vaginal tissues in POP patients is stiffer and has...
article 2020
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Pasman, W.J. (author), Memelink, R.G. (author), den Bosch, J.V.V. (author), Begieneman, M.P.V. (author), van den Brink, W.J. (author), Weijs, P.J.M. (author), Wopereis, S. (author)
Background: Recent research showed that subtypes of patients with type 2 diabetes may differ in response to lifestyle interventions based on their organ-specific insulin resistance (IR). (2) Methods: 123 Subjects with type 2 diabetes were randomized into 13-week lifestyle intervention, receiving either an enriched protein drink (protein+) or an...
article 2020
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Doets, E.L. (author), de Hoogh, I.M. (author), Holthuysen, N. (author), Wopereis, S. (author), Verain, M.C.D. (author), van den Puttelaar, J. (author), Hogenelst, K. (author), Boorsma, A. (author), Bouwman, E.P. (author), Timmer, M. (author), Pasman, W.J. (author), van Erk, M. (author), Reinders, M.J. (author)
The aim of this explorative study is to evaluate whether personalized compared to generic lifestyle advice improves wellbeing in a senior population. We conducted a nine-week single-blind randomized controlled trial including 59 participants (age 67.7 ± 4.8 years) from Wageningen and its surrounding areas in the Netherlands. Three times during...
article 2019
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van den Hoek, A.M. (author), Zondag, G.C.M. (author), Verschuren, L. (author), de Ruiter, C. (author), Attema, J. (author), de Wit, E.C. (author), Schwerk, A.M.K. (author), Guigas, B. (author), Rietman, A. (author), Strijker, R. (author), Kleemann, R. (author)
BACKGROUND: Muscle atrophy is defined as decreased muscle mass, associated with aging as well as with various chronic diseases and is a fundamental cause of frailty, functional decline and disability. Frailty represents a huge potential public health issue worldwide with high impact on healthcare costs. A major clinical issue is therefore to...
article 2019
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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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Shankar, K. (author), Pivik, R.T. (author), Johnson, S.L. (author), van Ommen, B. (author), Demmer, E. (author), Murray, R. (author)
Understanding health requires more than knowledge of the genome. Environmental factors regulate gene function through epigenetics. Collectively, environmental exposures have been called the "exposome." Caregivers are instrumental in shaping exposures in a child's initial years. Maternal dietary patterns, physical activity, degree of weight gain,...
article 2018
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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
Searched for: subject%3A%22Muscles%22
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