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Ball velocity and elbow loading in fastball pitching

Gasparutto, X. (author), van der Graaff, E (author), Veeger, H.E.J. (author), van der Helm, F.C.T. (author)

Among baseball players, the pitchers are the most prone to injuries. These injuries occur mainly at the medial part of the elbow and at the shoulder. It is widely accepted that high joint loading are linked to overuse injury for repetitive motion. At maximal exo-rotation (MER), the elbow maximal abduction moment is predominantly counteracted by...

conference paper 2016

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The role of pelvis and thorax rotation velocity in baseball pitching

van der Graaff, E (author), Hoozemans, M (author), Nijhoff, M. (author), Davidson, M (author), Hoezen, M (author), Veeger, H.E.J. (author)

The objective of the present study was to examine the relative timing of pelvis and thorax rotations in achieving high throwing velocities in baseball pitching. During the preseason, a kinematic analysis was performed on eight pitchers. Peak angular velocities of the pelvis and thorax were determined and separation, defined as the time between...

conference paper 2016

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Getting the angles straight in speed skating: A validation study on an IMU filter design to measure the lean angle of the skate on the straights

van der Kruk, E. (author), Schwab, A.L. (author), van der Helm, F.C.T. (author), Veeger, H.E.J. (author)

To assist speed skaters in improving their skating performance, we would like to provide them with real time feedback on the orientation of the skate within a single stroke. While of course the forces generated by the skater on the ice determine the acceleration of the skater, the orientation of the skate determines in which direction this...

conference paper 2016

document

Elite athlete motor and loading actions on the upper limb in baseball pitching

Gasparutto, X. (author), Van Der Graaff, E. (author), van der Helm, F.C.T. (author), Veeger, H.E.J. (author)

In baseball, pitchers are the players that are most prone to injury. Most injuries occur at the elbow and shoulder of the throwing upper limb. It is widely accepted that understanding the loading in the joints during pitching is a key factor to prevent injuries. To deepen the understanding of the joint actions this study proposes to split the...

conference paper 2016

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Push characteristics in wheelchair court sport sprinting

van der Slikke, R.M.A. (author), Berger, Monique (author), Bregman, D.J.J. (author), Veeger, H.E.J. (author)

Short sprints are important components of most wheelchair court sports, since being faster than the opponent often determines keeping ball possession or not. Sprinting capacity is best measured during a field test, allowing the athlete to freely choose push strategies adapted to their own wheelchair setting, physical ability, classification...

conference paper 2016

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From big data to rich data: The key features of athlete wheelchair mobility performance

van der Slikke, R.M.A. (author), Berger, MAM (author), Bregman, DJJ (author), Veeger, H.E.J. (author)

Quantitative assessment of an athlete׳s individual wheelchair mobility performance is one prerequisite needed to evaluate game performance, improve wheelchair settings and optimize training routines. Inertial Measurement Unit (IMU) based methods can be used to perform such quantitative assessment, providing a large number of kinematic data. The...

journal article 2016

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Giving the force direction: Analysis of speed skater push off forces with respect to an inertial coordinate system

van der Kruk, E. (author), van der Helm, F.C.T. (author), Schwab, A.L. (author), Veeger, H.E.J. (author)

Pushoff in speed skating requires an extensive motion strategy. During speed skating the skater continuously changes the lean and steering angle of the skate and therewith the direction of push-off, The forces in an inertial coordinate system can give insight into what amount of the push-off force is directed into the forward motion. In this...

conference paper 2016

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Prevalence of self-reported stroke in association with ethnic background within a multi-ethnic population in Paramaribo, Suriname: Results from the helisur study

Jarbandhan, Ameerani V. (author), Hoozemans, Marco J.M. (author), Buys, Roselien (author), Diemer, Frederieke S. (author), Baldew, Se Sergio M. (author), Aartman, Jet (author), Brewster, Lizzy M. (author), Van Montfrans, Gert A. (author), Oehlers, Glenn P. (author), Veeger, H.E.J. (author), Toelsie, Jerry (author), Vanhees, Luc (author)

Background: Suriname is a middle-income country with a multi-ethnic population. Urbanization and ethnicity may be associated with incidence of cerebrovascular disease, but so far this has not been documented for Suriname. The objective of this study was to examine the prevalence of stroke in the capital of Suriname, and its association with...

journal article 2016

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Anatomical parameters for musculoskeletal modeling of the hand and wrist

Mirakhorlo, M (author), Visser, J.M.A. (author), Goislard de Monsabert, B.A.A.X. (author), van der Helm, F.C.T. (author), Maas, H. (author), Veeger, H.E.J. (author)

A musculoskeletal model of the hand and wrist can provide valuable biomechanical and neurophysiological insights, relevant for clinicians and ergonomists. Currently, no consistent data-set exists comprising the full anatomy of these upper extremity parts. The aim of this study was to collect a complete anatomical data-set of the hand and wrist,...

journal article 2016

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Wireless instrumented klapskates for long-track speed skating

van der Kruk, E. (author), Den Braver (student), O. (author), Schwab, A.L. (author), van der Helm, F.C.T. (author), Veeger, H.E.J. (author)

In the current project, we aim to provide speed skaters with real-time feedback on how to improve their skating performance within an individual stroke. The elite skaters and their coaches wish for a system that determines the mechanical power per stroke. The push-off force of the skater is a crucial variable in this power determination. In...

journal article 2016

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Corrigendum: EEG beta suppression and low gamma modulation are different elements of human upright walking

Seeber, M. (author), Scherer, R. (author), Wagner, J. (author), Solis Escalante, T. (author), Müller-Putz, G.R. (author)

A corrigendum on EEG beta suppression and low gamma modulationare different elements of human upright walking by Seeber,M.,Scherer,R.,Wagner,J.,Solis-Escalante,T.,andMüller-Putz,G.R.(2014)Front.Hum. Neurosci.8:485.doi:10.3389/fnhum.2014.00485

journal article 2015

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A literature review on human factors research using motorcycle simulators (poster)

Kovacsova, N. (author), Di Gesu, M. (author), Schwab, A.L. (author), Gubitosa, M. (author), Hagenzieker, M.P. (author), De Winter, J.C.F. (author)

journal article 2015

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Dynamic functional brain connectivity for face perception

Yang, Y. (author), Qiu, Y. (author), Schouten, A.C. (author)

journal article 2015

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A literature review on human factors research using motorcycle simulators

Kovacsova, N. (author), Di Gesu, M. (author), Schwab, A.L. (author), Gubitosa, M. (author), Hagenzieker, M.P. (author), De Winter, J.C.F. (author)

conference paper 2015

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Airway segmentation and centerline extraction from thoracic CT: Comparison of a new method to state of the art commercialized methods

Reynisson, P.J. (author), Scali, M. (author), Smistad, E. (author), Hofstad, E.F. (author), Leira, H.O. (author), Lindseth, F. (author), Nagelhus Hernes, T.A. (author), Amundsen, T. (author), Sorger, H. (author), Lango, T. (author)

Our motivation is increased bronchoscopic diagnostic yield and optimized preparation, for navigated bronchoscopy. In navigated bronchoscopy, virtual 3D airway visualization is often used to guide a bronchoscopic tool to peripheral lesions, synchronized with the real time video bronchoscopy. Visualization during navigated bronchoscopy, the...

journal article 2015

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Effect of steering model fidelity on subjective evaluation of truck steering feel

Shyrokau, B. (author), Loof, J. (author), Stroosma, O. (author), Wang, M. (author), Happee, R. (author)

The steering behaviour in a driving simulator has a significant influence on a driving realism. This study investigates the influence of the complexity of a steering-system model on the subjective assessment of truck steering feel in on-centre handling. Ten subjects drove a highway task with and without lateral wind disturbance with 4 steering...

conference paper 2015

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A novel ultrasound technique for detection of osteochondral defects in the ankle joint: A parametric and feasibility study

Sarkalkan, N. (author), Loeve, A.J. (author), Van Dongen, K.W.A. (author), Tuijthof, G.J.M. (author), Zadpoor, A.A. (author)

(Osteo)chondral defects (OCDs) in the ankle are currently diagnosed with modalities that are not convenient to use in long-term follow-ups. Ultrasound (US) imaging, which is a cost-effective and non-invasive alternative, has limited ability to discriminate OCDs. We aim to develop a new diagnostic technique based on US wave propagation through...

journal article 2015

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Robust Hand Motion Tracking through Data Fusion of 5DT Data Glove and Nimble VR Kinect Camera Measurements

Arkenbout, E.A. (author), De Winter, J.C.F. (author), Breedveld, P. (author)

Vision based interfaces for human computer interaction have gained increasing attention over the past decade. This study presents a data fusion approach of the Nimble VR vision based system, using the Kinect camera, with the contact based 5DT Data Glove. Data fusion was achieved through a Kalman filter. The Nimble VR and filter output were...

journal article 2015

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Exploiting Dynamics in robotic arms with repetitive tasks

Plooij, M.C. (author)

Since the industrial revolution, machines have taken over many tasks from humans, increasing labor productivity and prosperity. In the 20th century, the introduction of robots created a second wave of automation, increasing the labor productivity even further. In order to create a third wave of automation, it is necessary to develop a new...

doctoral thesis 2015

document

Where are my instruments? Hazards in delivery of surgical instruments

Guédon, A.C.P. (author), Wauben, L.S.G.L. (author), Van der Eijk, A.C. (author), Vernooij, A.S.N. (author), Meeuwsen, F.C. (author), Van der Elst, M. (author), Hoeijmans, V. (author), Dankelman, J. (author), Van den Dobbelsteen, J.J. (author)

Background Unavailability of instruments is recognised to cause delays and stress in the operating room, which can lead to additional risks for the patients. The aim was to provide an overview of the hazards in the entire delivery process of surgical instruments and to provide insight into how Information Technology (IT) could support this...

journal article 2015