Humans need only 200 ms to generate posture-specific muscle activation patterns for successful vertical jumps in reaction to an auditory trigger

Autor: Maarten F. Bobbert, Axel S. Koopman

Publikováno v: Frontiers in Sports and Active Living, Vol 5 (2023)

IntroductionIt is currently unknown how the central nervous system controls ballistic whole-body movements like vertical jumps. Here we set out to study the time frame of generating muscle activation patterns for maximum-effort jumps from different i

Externí odkaz: https://doaj.org/article/965ca0ff04d84f63ac3accbb7ef652ea

Rationale, Implementation and Evaluation of Assistive Strategies for an Active Back-Support Exoskeleton

Autor: Stefano Toxiri, Axel S. Koopman, Maria Lazzaroni, Jesús Ortiz, Valerie Power, Michiel P. de Looze, Leonard O'Sullivan, Darwin G. Caldwell

Publikováno v: Frontiers in Robotics and AI, Vol 5 (2018)

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 f

Externí odkaz: https://doaj.org/article/02f406037c514f04a0496b2757294626

Effects of a passive exoskeleton on the mechanical loading of the low back in static holding tasks

Autor: Michiel P. de Looze, Axel S. Koopman, Jaap H. van Dieën, Gert S. Faber, Idsart Kingma

Publikováno v: Koopman, A S, Kingma, I, Faber, G S, de Looze, M P & van Dieën, J H 2019, ' Effects of a passive exoskeleton on the mechanical loading of the low back in static holding tasks ', Journal of Biomechanics, vol. 83, no. January, pp. 97-103 . https://doi.org/10.1016/j.jbiomech.2018.11.033
Journal of Biomechanics, 83(January), 97-103. Elsevier Limited

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 abdomin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0aba69ef7dd3926a1d1e1fbe901fd66b
https://research.vu.nl/en/publications/c6b63e40-caf5-4b2e-b2eb-f3ab61faebd0

SPEXOR passive spinal exoskeleton decreases metabolic cost during symmetric repetitive lifting

Autor: J.H. van Dieen, Jan Babič, Han Houdijk, Saskia Baltrusch, Matthias B. Näf, Carlos Rodriguez-Guerrero, Axel S. Koopman

Publikováno v: Baltrusch, S J, van Dieën, J H, Koopman, A S, Näf, M B, Rodriguez-Guerrero, C, Babič, J & Houdijk, H 2020, ' SPEXOR passive spinal exoskeleton decreases metabolic cost during symmetric repetitive lifting ', European Journal of Applied Physiology, vol. 120, no. 2, pp. 401-412 . https://doi.org/10.1007/s00421-019-04284-6
European Journal of Applied Physiology, 120(2), 401-412. Springer Verlag

PURPOSE: Besides mechanical loading of the back, physiological strain is an important risk factor for low-back pain. Recently a passive exoskeleton (SPEXOR) has been developed to reduce loading on the low back. We aimed to assess the effect of this d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4edd8f47dc615da4838ec30b21eb4166
https://hdl.handle.net/20.500.14017/5067b53a-4eb3-4506-a5cc-4d0059bd2161

Selecting the appropriate input variables in a regression approach to estimate actively generated muscle moments around L5/S1 for exoskeleton control

Autor: Michiel P. de Looze, Axel S. Koopman, Ali Tabasi, Wietse van Dijk, Jaap H. van Dieën, Idsart Kingma

Publikováno v: Tabasi, A, Kingma, I, de Looze, M P, van Dijk, W, Koopman, A S & van Dieën, J H 2020, ' Selecting the appropriate input variables in a regression approach to estimate actively generated muscle moments around L5/S1 for exoskeleton control ', Journal of Biomechanics, vol. 102, 109650, pp. 109650 . https://doi.org/10.1016/j.jbiomech.2020.109650
Journal of Biomechanics, 102:109650. Elsevier Limited

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 estim

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18b18bb1ba08361a93f86fc77b0f50f8
https://pubmed.ncbi.nlm.nih.gov/32005548