Neural and Muscular Plasticity in Motor and Postural Control

A special issue of Brain Sciences (ISSN 2076-3425). This special issue belongs to the section "Sensory and Motor Neuroscience".

Deadline for manuscript submissions: 25 September 2026 | Viewed by 1412

Special Issue Editor


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Guest Editor
Movement, Balance, Performance, and Health Laboratory (MEPS), Department of Sport Sciences, University Pau and Pays de l’Adour, E2S, 6500 Tarbes, France
Interests: neurophysiology; electrophysiology; neurosciences; plasticity of the motor function; plasticity of the postural function
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Special Issue Information

Dear Colleagues,

This Special Issue aims to address neural and muscular plasticity in motor and postural control. Neural plasticity in motor and postural control occurs at the cortical, subcortical, and spinal levels. At the cortical level, the motor cortex can reorganize its motor maps following training or injury. Motor learning (e.g., learning a new motor task) induces lasting synaptic changes. Non-invasive brain stimulation can modulate this plasticity for rehabilitation purposes. At the subcortical level, the cerebellum plays a central role in adjusting movements and posture through motor learning (error-based learning). The basal ganglia are involved in the automation of movement. At the spinal level, reflex circuits (such as stretch reflexes) can be modulated with training. Mechanisms of synaptic plasticity and interneuron modulation enable rapid postural adaptations.

Muscle plasticity occurs in responses to training as well as in responses to disuse or disease. In terms of responses to training, different workloads (e.g., strength or endurance training) change muscle morphology, muscle fiber composition, vascularization, enzymatic composition and activity, sensory sensitivity, and neurotransmitter synthesis. These changes/adaptations are likely, at least in part, to improve motor output (e.g., muscle power and strength, rate of force development, muscle endurance, movement/motor control) and postural balance (e.g., improved stabilization of the trunk or lower limbs). In terms of responses to disuse or disease, in cases of immobilization or neurological disease (e.g., stroke, multiple sclerosis), muscles can atrophy and lose their motor output. Rehabilitation aims to reverse or compensate for these structural and functional involutions.

Postural function plasticity occurs specifically at the level of sensorimotor integration (i.e., visual, vestibular, and proprioceptive signals). This plasticity allows adaptation to changing environments and motor and postural experience. Postural training (i.e., postural exercises/tasks) improves intermuscular coordination, strengthens the corticospinal circuits involved in balance, and refines the automation of postural adjustments.

Despite these relatively well-known adaptations, there is still much to discover in terms of information perception, central integration, movement control and command and postural balance control. Therefore, exploratory research is needed to deepen our understanding of neural and muscular plasticity in motor and postural control. Here, we call for papers that address how this neural plasticity occurs in relation to motor and postural behavior.

Prof. Dr. Thierry Paillard
Guest Editor

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Keywords

  • postural balance
  • motor behaviour
  • movement
  • posture
  • postural adjustments
  • neural plasticity
  • perception, sensory integration
  • intermuscular coordination

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Published Papers (3 papers)

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Research

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13 pages, 520 KB  
Article
Influence of Different Arm Movement Strategies on Subjective Task-Related Perceptions and Walking Outcomes Under Single- and Dual-Task Conditions in Healthy Children Compared to Young Adults
by Katharina Borgmann, Matthias Schebeck, Lea Greiwe, Johanna Lambrich, Mathew W. Hill and Thomas Muehlbauer
Brain Sci. 2026, 16(4), 428; https://doi.org/10.3390/brainsci16040428 - 20 Apr 2026
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Abstract
Background/Objectives: Emerging evidence shows that dual tasking as well as the restriction of arm movements independently lead to detrimental effects on walking performance. However, it is unclear whether the deteriorations are more pronounced when applied together and if children (i.e., due to [...] Read more.
Background/Objectives: Emerging evidence shows that dual tasking as well as the restriction of arm movements independently lead to detrimental effects on walking performance. However, it is unclear whether the deteriorations are more pronounced when applied together and if children (i.e., due to ongoing maturation processes) perform differently compared to young adults. This study investigated the influence of different arm movement strategies on subjective and objective markers related to beam walking under single-task (ST) and dual-task (DT) conditions in children and young adults. Methods: Twenty-six children (age: 11.3 ± 0.6 years) and 30 young adults (age: 23.2 ± 2.8 years) walked three meters on a balance beam with free and restricted (i.e., arms crossed over the chest) arm movements in a random order while concurrently performing a cognitive task (i.e., serial subtractions) or not. Walking outcomes (i.e., gait speed, cadence) were measured and used as objective markers. Self-reported task-related perceptions (i.e., balance confidence, fear of falling, perceived instability, conscious balance processing) were assessed and used as subjective indicators. Results: Walking under DT conditions (i.e., main effects of task) detrimentally influenced subjective task-related perceptions and walking outcomes, but using free arm movements (i.e., task × arm interactions) mitigated these deteriorations. Further, children exhibited largely stable levels of conscious balance processing, whereas young adults demonstrated overall higher levels along with pronounced differences between ST and DT walking when arm movements were unrestricted (i.e., group × task × arm interaction). Conclusions: These findings indicate that free arm movements seem to constitute a simple yet effective complementary ‘upper-body strategy’ that enhances postural control during a cognitively demanding walking task. Further, age differences imply that young adults compensate demanding walking conditions (i.e., DT walking with restricted arms) by elevated conscious processing of balance (i.e., a shift from automated to more conscious attention towards postural control). Full article
(This article belongs to the Special Issue Neural and Muscular Plasticity in Motor and Postural Control)
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12 pages, 551 KB  
Article
Optic Flow Simulating Self-Motion Does Not Modulate the Hoffmann Reflex in the Soleus During Upright Standing in Healthy Young Adults
by Christophe Barbanchon and Stéphane Baudry
Brain Sci. 2026, 16(3), 297; https://doi.org/10.3390/brainsci16030297 - 6 Mar 2026
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Abstract
Background/Objectives: Visual motion is a powerful contributor to postural control, yet its influence on modulation of the Ia afferent pathway remains to be confirmed. This study investigated whether optic-flow simulating self-motion modulates the soleus Hoffmann (H) reflex recorded in the soleus during [...] Read more.
Background/Objectives: Visual motion is a powerful contributor to postural control, yet its influence on modulation of the Ia afferent pathway remains to be confirmed. This study investigated whether optic-flow simulating self-motion modulates the soleus Hoffmann (H) reflex recorded in the soleus during upright stance in immersive virtual reality. Methods: Fourteen healthy adults completed two experimental sessions, each comprising four visual conditions of increasing optic-flow complexity. In one session, participants stood freely on a force platform (free standing) whereas in the other, postural sways were restricted (supported standing). Surface EMG, posterior tibial nerve stimulation, and force-platform recordings were collected. Results: During free standing, optic flow substantially increased postural sway [F(3,13) = 15.7, p < 0.001, η2 = 0.55], with higher sway in all optic-flow conditions (~13 mm/s) compared with static viewing (~10 mm/s). In contrast, soleus H-reflex amplitude was not modulated by optic flow [F(3,13) = 0.2, p = 0.57], remaining stable across conditions (~44% Mmax). Background EMG and CoP position preceding stimulation were similar across conditions. In supported standing, used to isolate the effect of optic flow independently to postural control, H-reflex amplitude again showed no condition effect [F(3,13) = 0.2, p = 0.86]. Conclusions: These findings indicate that postural perturbation induced by optic flow was not accompanied by a modulation of the Ia afferent-motoneuron transmission of the soleus under the used experimental conditions. The results suggest that postural control under virtual optic flow is mediated predominantly by supraspinal sensory-integration mechanisms, rather than by modulation of the Ia-monosynaptic reflex pathway. Full article
(This article belongs to the Special Issue Neural and Muscular Plasticity in Motor and Postural Control)
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Review

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17 pages, 601 KB  
Review
Theoretical Perspectives on Balance Training and the Gut–Muscle–Brain Axis in Aging
by Ahmad Zandi, Johannes Burtscher and Peter Federolf
Brain Sci. 2026, 16(4), 432; https://doi.org/10.3390/brainsci16040432 - 21 Apr 2026
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Abstract
With growing global life expectancy, age-related physical problems, including balance impairments, are becoming more prevalent, increasing the risk of falls, mobility limitations, and loss of independence. This review summarizes current evidence on how balance may be influenced and improved by training modalities including [...] Read more.
With growing global life expectancy, age-related physical problems, including balance impairments, are becoming more prevalent, increasing the risk of falls, mobility limitations, and loss of independence. This review summarizes current evidence on how balance may be influenced and improved by training modalities including reactive, strength-based, and functional exercises, through neuromuscular adaptations relevant to postural control and functional stability in older adults. Emerging evidence suggests that gut microbiota may influence neuromuscular health via neuroimmune, metabolic, and mitochondrial pathways across the gut–muscle–brain axis. However, most studies focus on muscle metabolism, inflammation, and systemic physiological processes rather than direct assessments of balance or postural control. Gut dysbiosis has been associated with sarcopenia and impaired physical function, although evidence linking microbiota alterations to balance outcomes remains limited and mainly observational. Exercise has beneficial effects on neuromuscular function and gut microbial composition, including increased diversity and metabolite production. While exercise-induced neuromuscular adaptations are well supported experimentally, little direct evidence shows the contribution of gut-related mechanisms to balance regulation. Overall, neuromuscular and gut-related processes seem to be associated with balance capacity in older adults; however, further mechanistic and interventional studies are required to clarify the role of the gut–muscle–brain axis for balance. Full article
(This article belongs to the Special Issue Neural and Muscular Plasticity in Motor and Postural Control)
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