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van Dijk, M.P. (author), Hoozemans, Marco J.M. (author), Berger, M.A.M. (author), Veeger, H.E.J. (author)In wheelchair sports, there is an increasing need to monitor mechanical power in the field. When rolling resistance is known, inertial measurement units (IMUs) can be used to determine mechanical power. However, upper body (i.e., trunk) motion affects the mass distribution between the small front and large rear wheels, thus affecting rolling...journal article 2024
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van Dijk, M.P. (author), Hoozemans, Marco J.M. (author), Berger, M.A.M. (author), Veeger, H.E.J. (author)An important performance determinant in wheelchair sports is the power exchanged between the athlete-wheelchair combination and the environment, in short, mechanical power. Inertial measurement units (IMUs) might be used to estimate the exchanged mechanical power during wheelchair sports practice. However, to validly apply IMUs for mechanical...journal article 2024
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Noteboom, L. (author), Nijs, Anouk (author), Beek, Peter J. (author), van der Helm, F.C.T. (author), Hoozemans, Marco J.M. (author)Muscle overload injuries in strength training might be prevented by providing personalized feedback about muscle load during a workout. In the present study, a new muscle load feedback application, which monitors and visualizes the loading of specific muscle groups, was developed in collaboration with the fitness company Gymstory. The aim of the...journal article 2023
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Zhang, M. (author), Ganz, Andrea B. (author), Rohde, Susan (author), Lorenz, Linda (author), Rozemuller, Annemieke J.M. (author), Reinders, M.J.T. (author), Hulsman, M. (author), Hoozemans, Jeroen J.M. (author), Holstege, H. (author)INTRODUCTION: Neuropathological substrates associated with neurodegeneration occur in brains of the oldest old. How does this affect cognitive performance?. METHODS: The 100-plus Study is an ongoing longitudinal cohort study of centenarians who self-report to be cognitively healthy; post mortem brain donation is optional. In 85 centenarian...journal article 2023
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van Trigt, B. (author), van Hogerwou, Thomas (author), Leenen, A.J.R. (author), Hoozemans, Marco J.M. (author), van der Helm, F.C.T. (author), Veeger, H.E.J. (author)In baseball pitchers the elbow is exposed to high and repetitive loads (i.e. external valgus torque), caused by pitching a high number of balls in a practice session or game. This can result in overuse injuries like the ulnar collateral ligament (UCL) injury. To understand injury mechanisms, the effect of repetitive pitching on the elbow load...journal article 2023
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Hirvonen, Alex (author), Leppänen, Topi (author), Hepola, Kari (author), Multanen, Joonas (author), Hoozemans, J.J. (author), Jääskeläinen, Pekka (author)Modern High Level Synthesis (HLS) tools succeed well in their engineering productivity goal, but still require toolset and target technology specific modifications to the source code to guide the process towards an efficient implementation. Furthermore, their end result is a fixed function accelerator with limited field and runtime...journal article 2023
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van Trigt, B. (author), Bouman, F.F. (author), Leenen, Antonius J. R. (author), Hoozemans, Marco J.M. (author), van der Helm, F.C.T. (author), Veeger, H.E.J. (author)Medial elbow overuse injuries are rising in baseball. The external valgus torque magnitude is a possible risk factor for medial elbow injuries. The magnitude on its own cannot explain why one pitcher sustains an injury and another does not. Therefore, the aim of this study is to describe the within-individual external valgus torque variability...journal article 2022
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de Swart, A.F.M.J. (author), van Trigt, B. (author), Wasserberger, Kyle (author), Hoozemans, Marco J.M. (author), Veeger, H.E.J. (author), Oliver, Gretchen D. (author)It is generally accepted that most of the energy transferred to the ball during a baseball pitch is generated in the trunk and lower extremities. Therefore, purpose of this study was to assess the energy flow through the lower extremities during a baseball pitch. It was hypothesised that the (stabilising) leading leg mainly transfers energy...journal article 2022
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van Dijk, M.P. (author), van der Slikke, R.M.A. (author), Rupf, Rob (author), Hoozemans, Marco J.M. (author), Berger, Monique A.M. (author), Veeger, H.E.J. (author)In wheelchair sports, the use of Inertial Measurement Units (IMUs) has proven to be one of the most accessible ways for ambulatory measurement of wheelchair kinematics. A three-IMU configuration, with one IMU attached to the wheelchair frame and two IMUs on each wheel axle, has previously shown accurate results and is considered optimal for...journal article 2022
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Leenen, A.J.R. (author), van Trigt, B. (author), Hoozemans, M. J.M. (author), Veeger, H.E.J. (author)Background: Baseball pitching performance can be mechanically explained by the summation of speed principle and the principle of optimal coordination of partial momenta. Impeding optimal energy generation or transfer by or between the pelvis and trunk segments could provide valuable insight into possible compensation or catch-up mechanisms...journal article 2022
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Zhang, M. (author), Ganz, Andrea B. (author), Rohde, Susan (author), Rozemuller, Annemieke J.M. (author), Bank, Netherlands Brain (author), Reinders, M.J.T. (author), Scheltens, Philip (author), Hulsman, M. (author), Hoozemans, Jeroen J.M. (author), Holstege, H. (author)Introduction: With increasing age, neuropathological substrates associated with Alzheimer's disease (AD) accumulate in brains of cognitively healthy individuals—are they resilient, or resistant to AD-associated neuropathologies?. Methods: In 85 centenarian brains, we correlated NIA (amyloid) stages, Braak (neurofibrillary tangle) stages, and...journal article 2022
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Leenen, A.J.R. (author), Hurry, Amber (author), van Dis, Femke (author), van der Graaff, Erik (author), Veeger, H.E.J. (author), Hoozemans, M. J.M. (author)Monitoring the performance and functional status of baseball pitchers’ upper extremity is important in maintaining the athlete’s health and performance. This study validated a Dutch translation of the original English Kerlan-Jobe Orthopaedic Clinic (KJOC) against the previously validated Disabilities of the Arm, Shoulder and Hand (DASH) and...journal article 2022
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Noteboom, L. (author), Hoozemans, Marco J.M. (author), Veeger, H.E.J. (author), van der Helm, F.C.T. (author)Muscle force analysis can be essential for injury risk estimation and performance enhancement in sports like strength training. However, current methods to record muscle forces including electromyography or marker-based measurements combined with a musculoskeletal model are time-consuming and restrict the athlete's natural movement due to...journal article 2022
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van Trigt, B. (author), Galjee, E.N. (author), Hoozemans, Marco J.M. (author), van der Helm, F.C.T. (author), Veeger, H.E.J. (author)Background: Baseball pitching is associated with a high prevalence of ulnar collateral ligament injuries, potentially due to the high external valgus load on the medial side of the elbow at the instant of maximal shoulder external rotation (MER). In-vitro studies show that external valgus torque is resisted by the ulnar collateral ligament but...journal article 2021
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Hoozemans, J.J. (author), Peltenburg, J.W. (author), Nonnenmacher, Fabian (author), Hadnagy, A. (author), Al-Ars, Z. (author), Hofstee, H.P. (author)The big data revolution has ushered an era with ever increasing volumes and complexity of data requiring ever faster computational analysis. During this very same era, CPU performance growth has been stagnating, pushing the industry to either scale their computation horizontally using multiple nodes in datacenters, or to scale vertically using...journal article 2021
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Hoozemans, J.J. (author), Tervo, Kati (author), Jaaskelainen, Pekka (author), Al-Ars, Z. (author)Many applications make extensive use of various forms of compression techniques for storing and communicating data. As decompression is highly regular and repetitive, it is a suitable candidate for acceleration. Examples are offloading (de)compression to a dedicated circuit on a heterogeneous System-on-Chip, or attaching FPGAs or ASICs...conference paper 2021
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van Dijk, M.P. (author), Kok, M. (author), Berger, Monique A.M. (author), Hoozemans, Marco J.M. (author), Veeger, H.E.J. (author)In sports, inertial measurement units are often used to measure the orientation of human body segments. A Madgwick (MW) filter can be used to obtain accurate inertial measurement unit (IMU) orientation estimates. This filter combines two different orientation estimates by applying a correction of the (1) gyroscope-based estimate in the...journal article 2021
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Peltenburg, J.W. (author), Van Leeuwen, Lars T.J. (author), Hoozemans, J.J. (author), Fang, J. (author), Al-Ars, Z. (author), Hofstee, H.P. (author)In the domain of big data analytics, the bottleneck of converting storage-focused file formats to in-memory data structures has shifted from the bandwidth of storage to the performance of decoding and decompression software. Two widely used formats for big data storage and in-memory data are Apache Parquet and Apache Arrow, respectively. In...conference paper 2021
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Leenen, A.J.R. (author), van Trigt, B. (author), Hoozemans, Marco J.M. (author), Veeger, H.E.J. (author)The purpose of the present study was to investigate the effect of an experimentally imposed kinetic chain disturbance in baseball pitching on ball speed and elbow kinetics. The experimental design consisted of two (within-subject) conditions. In one condition there was no manipulation (control condition). The other condition involved a...journal article 2020
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van Trigt, B. (author), Leenen, A.J.R. (author), Hoozemans, Marco J.M. (author), van der Helm, F.C.T. (author), Veeger, H.E.J. (author)Upper extremity injuries are common in baseball. One of these is the ulnar collateral ligament (UCL) injury. In the field of sports injuries, most research focuses on average kinematics and kinetics between subjects, whereas focusing on within-subject variability appears to be more relevant for determining injury risk. We constructed a simple...journal article 2020