The underlying mechanisms of improved balance after one and ten sessions of balance training in older adults
| Autor: | Wouter Muijres, Sjoerd M. Bruijn, Huub Maas, Ruud A.J. Koster, Leila Alizadehsaravi, Jaap H. van Dieën |
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| Přispěvatelé: | Amsterdam Movement Sciences, Neuromechanics, AMS - Rehabilitation & Development, IBBA, Coordination Dynamics, AMS - Tissue Function & Regeneration, AMS - Musculoskeletal Health, AMS - Ageing & Vitality |
| Rok vydání: | 2021 |
| Předmět: |
medicine.medical_specialty
Biophysics Balance training Experimental and Cognitive Psychology Session (web analytics) H-Reflex 03 medical and health sciences Physical medicine and rehabilitation 0302 clinical medicine Medicine Humans Orthopedics and Sports Medicine Improved balance Balance performance Paired reflex depression Muscle Skeletal Balance (ability) H-reflex Aged business.industry Electromyography Co-contraction 030229 sport sciences General Medicine Uncorrelated medicine.anatomical_structure Duration (music) Reflex Ankle Center of mass velocity business 030217 neurology & neurosurgery |
| Zdroj: | Alizadehsaravi, L, Koster, R A J, Muijres, W, Maas, H, Bruijn, S M & van Dieën, J H 2022, ' The underlying mechanisms of improved balance after one and ten sessions of balance training in older adults ', Human Movement Science, vol. 81, 102910, pp. 1-14 . https://doi.org/10.1016/j.humov.2021.102910 Human Movement Science, 81 Human Movement Science, 81:102910, 1-14. Elsevier Human Movement Science bioRxiv |
| ISSN: | 1872-7646 0167-9457 |
| DOI: | 10.1016/j.humov.2021.102910 |
| Popis: | Training improves balance control in older adults, but the time course and neural mechanisms underlying these improvements are unclear. We studied balance robustness and performance, H-reflex gains, paired reflex depression, and co-contraction duration in ankle muscles after one and ten training sessions in 22 older adults (+65yrs). Mediolateral balance robustness, time to balance loss in unipedal standing on a platform with decreasing rotational stiffness, improved (33%) after one session, with no further improvement after ten sessions. Balance performance, absolute mediolateral center of mass velocity, improved (18.75%) after one session in perturbed unipedal standing and (18.18%) after ten sessions in unperturbed unipedal standing. Co-contraction duration of soleus/tibialis anterior increased (16%) after ten sessions. H-reflex gain and paired reflex depression excitability did not change. H-reflex gains were lower, and soleus/tibialis anterior co-contraction duration was higher in participants with more robust balance after ten sessions, and co-contraction duration was higher in participants with better balance performance at several time-points. Changes in robustness and performance were uncorrelated with changes in co-contraction duration, H-reflex gain, or paired reflex depression. In older adults, balance robustness improved over a single session, while performance improved gradually over multiple sessions. Changes in co-contraction and excitability of ankle muscles were not exclusive causes of improved balance.HighlightsBalance robustness and balance performance in perturbed unipedal standing was improved after one balance training session, with no further improvement after ten sessions.Balance performance in unperturbed unipedal standing was improved after ten sessionsH-reflex and paired reflex depression did not change after training in unipedal or bipedal standing.Co-contraction duration of antagonistic ankle muscles increased after ten sessions in perturbed and unperturbed unipedal standing.Changes in co-contraction duration and excitability of ankle muscles were not exclusive causes of improved balance. |
| Databáze: | OpenAIRE |
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