1/20/2024 0 Comments Blizzi mit muscle synergyDifferent ways of grouping muscles into synergies can be found in the literature. A single muscle can be part of multiple muscle synergies, and a single synergy can activate various muscles. A muscle synergy is the activation of a group of muscles to contribute to a particular movement, thus reducing the dimensionality of muscle control. The term muscle synergy, also called motor synergy, neuromuscular synergy, or muscle mode, has been used in the literature extensively over the last decade. These results suggest that SSI can be used to quantitatively evaluate balance maintenance ability. Participants who were adept at maintaining balance were found to have invariant muscle synergies, and non-adept participants showed variable muscle synergies. We observed a positive proportional relation between balance performance and SSI. Finally, from the calculated muscle synergies, we obtained SSI. We then calculated muscle synergies attributed to postural reflex and automatic response by using non-negative matrix factorization (NMF). We measured the activity of muscles responsible for maintaining lateral balance in humans standing on a platform that was subjected to lateral disturbance from the platform. Here, we investigated the variability of muscle synergy and defined a synergy stability index (SSI) to quantify it. Though these synergies are rather stable over time, some variability is present. Muscle synergy theory suggests that the central nervous system produces a small number of signals that pass through a network that distributes combinations of these signals to the muscles. The signals that the central nervous system (CNS) produces and sends to the muscles to effect movement are not entirely understood.
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