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Waterval, N. F.J. (author), Brehm, M. A. (author), Veerkamp, K. (author), Geijtenbeek, T. (author), Harlaar, J. (author), Nollet, F. (author), van der Krogt, M. M. (author)To maximize effects of dorsal leaf ankle foot orthoses (AFOs) on gait in people with bilateral plantarflexor weakness, the AFO properties should be matched to the individual. However, how AFO properties interact regarding their effect on gait function is unknown. We studied the interaction of AFO bending stiffness with neutral angle and...journal article 2023
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Waterval, N. F.J. (author), van der Krogt, M. M. (author), Veerkamp, K. (author), Geijtenbeek, T. (author), Harlaar, J. (author), Nollet, F. (author), Brehm, M. A. (author)Background: The stiffness of a dorsal leaf AFO that minimizes walking energy cost in people with plantarflexor weakness varies between individuals. Using predictive simulations, we studied the effects of plantarflexor weakness, passive plantarflexor stiffness, body mass, and walking speed on the optimal AFO stiffness for energy cost reduction...journal article 2023
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Waterval, N.F.J. (author), Brehm, M. A. (author), Harlaar, J. (author), Nollet, F. (author)Background: In individuals with unilateral plantar flexor weakness, the second peak of the vertical ground reaction force (GRF) is decreased. This leads to a higher ground reaction force, e.g. impact, of the contralateral leg, potentially explaining quadriceps muscle and/or knee joint pain. Energy cost optimized dorsal leaf ankle-foot...journal article 2022
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Validation of forward simulations to predict the effects of bilateral plantarflexor weakness on gaitWaterval, N. F.J. (author), Veerkamp, K. (author), Geijtenbeek, T. (author), Harlaar, J. (author), Nollet, F. (author), Brehm, M. A. (author), van der Krogt, M. M. (author)Background: Bilateral plantarflexor muscle weakness is a common impairment in many neuromuscular diseases. However, the way in which severity of plantarflexor weakness affects gait in terms of walking energy cost and speed is not fully understood. Predictive simulations are an attractive alternative to human experiments as simulations allow...journal article 2021
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Colles, E. (author), Nollet, F. (author), Vandeportaele, B. (author), Hattenberger, G. (author)The IMAV2014 Competition gives an important place to computer vision and aerial mapping. This paper presents the different strategies and algorithms that have been developed in order to tackle these particular problems. The first task consists in automatically reading the digit displayed by a seven segment panel on the front wall of a building....conference paper 2014