ArticleEuropean journal of applied physiology2017
Aging effect on muscle synergies in stepping forth during a forward perturbation.
Article in European journal of applied physiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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17 citing papers in PubMed, 29 citations in OpenAlex.
- From stiffness to automaticity: visuomotor training alters postural control strategies in older adults.GeroScience · 2026Trial
- Effects of first-step constraints on multi-muscle synergies and early postural adjustments during step initiation.Experimental brain research · 2026Article
- Muscle coordination strategies during Functional Reach across multiple directions in healthy individuals.European journal of applied physiology · 2026Article
- The effect of slow breathing on cardiovascular and electromyographic responses during standing perturbations in older adults.European journal of ageing · 2025Article
- Color-induced cognitive conflicts affect muscle activity prior to gait initiation in the Go/No-go task.Frontiers in human neuroscience · 2024Article
- One more time about motor (and non-motor) synergies.Experimental brain research · 2021Review
- Cortical correlates in upright dynamic and static balance in the elderly.Scientific reports · 2021Article
- Neuromechanical response of the upper body to unexpected perturbations during gait initiation in young and older adults.Aging clinical and experimental research · 2021Article
- Effects of age and knee osteoarthritis on the modular control of walking: A pilot study.PloS one · 2021Article
- Two Aspects of Feedforward Control During a Fencing Lunge: Early and Anticipatory Postural Adjustments.Frontiers in human neuroscience · 2021Article
- A Novel Viewpoint on the Anticipatory Postural Adjustments During Gait Initiation.Frontiers in human neuroscience · 2021Article
- Muscular and cortical activation during dynamic and static balance in the elderly: A scoping review.Aging brain · 2021Article
- Synergic control of action in levodopa-naïve Parkinson's disease patients: II. Multi-muscle synergies stabilizing vertical posture.Experimental brain research · 2020Article
- Perturbation-Based Balance Training in Postoperative Individuals With Degenerative Cervical Myelopathy.Frontiers in bioengineering and biotechnology · 2020Article
- Effect of dance on multi-muscle synergies in older adults: a cross-sectional study.BMC geriatrics · 2019Article
- Not all brawn, but some brain. Strength gains after training alters kinematic motor abundance in hopping.PeerJ · 2018Article
- Multi-Finger Interaction and Synergies in Finger Flexion and Extension Force Production.Frontiers in human neuroscience · 2017Article
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Authors and funding
3 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeWe explored changes in muscle interactions during healthy aging as a window into neural control strategies of postural preparation to action/perturbation. In particular, we quantified the strength of multi-muscle synergies stabilizing the center of pressure (COP) displacement during the preparation for making a step associated with support surface translations.
methodsYoung and elderly subjects were required to make a step in response to support surface perturbations. Surface muscle activity of 11 leg and trunk muscles was analyzed to identify sets of 4 muscle modes (M-modes). Linear combinations of M-modes and their relationship to changes in the COP displacement in the anterior-posterior direction were then determined. Uncontrolled manifold analysis was performed to determine variance components in the M-mode space and indices of M-mode synergy stabilizing COP displacement.
resultsPrior to the step initiation, the older subjects showed strong synergies that stabilized COP displacement to forward perturbation of the support surface. However, the synergy indices were significantly lower than those of the young subjects during preparation for making a step. The timings of early postural adjustment (EPA) and anticipatory postural adjustment (APA) were consistently earlier in the young subjects as compared to the older subjects. For both groups, the timing of EPA did not change across tasks, while APA showed delayed timing in response to the support surface translations.
conclusionsWe infer that changes in the indices of synergies with age may present challenges for the control of postural preparation to external perturbation in older adults. They may lead to excessive muscle co-contractions and low stability of COP displacement. The results reported here could have clinical relevance when identifying the risk of making a step, which has been linked to an increased risk of falls among the elderly.
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