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Antagonist co-activation represents a neuronal command for the modulation of muscle synergies with postural control purposes, probably assuming a key role in the characterisation of tonus dysfunction in post-stroke subjects. This study aims to evaluate the ankle antagonist co-activation during different functional tasks in post-stroke subjects. The CONTRA limb presented decreased values in TA/SOL pair during upright standing and increased values in both muscle pairs during gait initiation compared to the IPSI limb (Table 1). No significant differences were found between tasks (Table 1). he IPSI and CONTRA limbs presented increased antagonist co-activation when an adequate antigravity function and the coordination of the tibia forward rotation are required, respectively. The comparison of these values with that obtained by healthy subjects seems to point to a bilateral postural control dysfunction in post-stroke subjects related to tonus modulation deficits that should be addressed in neurorehabilitation. Future studies with a higher sample are required to extend the results.
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Citação
Ribeiro, E., Silva, A., Pinho, L., Santos, R., Pinho, F., & Sousa, A. S. P. (2021). Modulation of ankle antagonist co-activation during the transition from upright standing to gait and to sit in post-stroke subjects. Annals of Medicine, 53(sup1), S189–S190. https://doi.org/10.1080/07853890.2021.1896620
Editora
Taylors and Francis