ArticleScientific reports2022
Evaluating anticipatory control strategies for their capability to cope with step-down perturbations in computer simulations of human walking.
Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.
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10 citing papers in PubMed, 1 synthesis or guideline pooled it, 20 citations in OpenAlex.
- Methods for integrating postural control into biomechanical human simulations: a systematic review.Journal of neuroengineering and rehabilitation · 2023Pooled it
- A spinal network of proprioceptive reflexes can produce a variety of bipedal gaits.Communications biology · 2025Article
- The effect of age-related sensorimotor changes on step-down strategy: a predictive simulation study.Scientific reports · 2025Article
- Emergence of natural and robust bipedal walking by learning from biologically plausible objectives.iScience · 2025Article
- Effects of aging-related muscle degeneration on dynamic stability during walking: a musculoskeletal computer simulation study.Frontiers in bioengineering and biotechnology · 2024Article
- Higher coactivations of lower limb muscles increase stability during walking on slippery ground in forward dynamics musculoskeletal simulation.Scientific reports · 2023Article
- Bioinspired preactivation reflex increases robustness of walking on rough terrain.Scientific reports · 2023Article
- Simulating the effect of ankle plantarflexion and inversion-eversion exoskeleton torques on center of mass kinematics during walking.PLoS computational biology · 2023Article
- Dysfunctional neuro-muscular mechanisms explain gradual gait changes in prodromal spastic paraplegia.Journal of neuroengineering and rehabilitation · 2023Article
- Muscle prestimulation tunes velocity preflex in simulated perturbed hopping.Scientific reports · 2023Article
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Authors and funding
4 authors at 3 institutions in 1 country.
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Abstract
Previous simulation studies investigated the role of reflexes and central pattern generators to explain the kinematic and dynamic adaptations in reaction to step-down perturbations. However, experiments also show preparatory adaptations in humans based on visual anticipation of a perturbation. In this study, we propose a high-level anticipatory strategy augmenting a low-level muscle-reflex control. This strategy directly changes the gain of the reflex control exclusively during the last contact prior to a drop in ground level. Our simulations show that especially the anticipatory reduction of soleus activity and the increase of hamstrings activity result in higher robustness. The best results were obtained when the change in stimulation of the soleus muscle occurred 300 ms after the heel strike of the contralateral leg. This enabled the model to descend perturbation heights up to - 0.21 m and the resulting kinematic and dynamic adaptations are similar to the experimental observations. This proves that the anticipatory strategy observed in experiments has the purpose of increasing robustness. Furthermore, this strategy outperforms other reactive strategies, e.g., pure feedback control or combined feedback and feed-forward control, with maximum perturbation heights of - 0.03 and - 0.07 m, respectively.
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