Muscle Synergies
Muscle synergies refers to the hypothesis that the central nervous system (CNS) simplifies the planning and production of movement by using a combination of a limited number of spatial and/or temporal modules1
Tonic & Phasic
From MSK 2 lecture
- Tonic vs phasic muscles
- Tonic muscles: those that hold u in the fetal position, usually flexion synergyish , more spastic
- “Phylogenetically older”.
- you should STRETCH these muscles
- Phasic muscles: ones that open you (ie ER, supination): the opposite as above, ie ) traps: long and weak, constantly need to strengthen for better posture and function.
- You should STRENGTHEN
- Treatment: An idea is if you have poor mm length on a tonic muscle, strengthen the opposite phasic muscles to reduce tone in the tonic muscle
- Tonic muscles: those that hold u in the fetal position, usually flexion synergyish , more spastic
Read this article for more information about tonic/phasic muscles:1
References
1.
Brambilla C, Russo M, d’Avella A, Scano A. Phasic and tonic muscle synergies are different in number, structure and sparseness. Human Movement Science. 2023;92:103148. doi:10.1016/j.humov.2023.103148
Citation
For attribution, please cite this work as:
Yomogida N, Kerstein C. Muscle Synergies. https://yomokerst.com/The
Archive/Motor Control/muscle_synegies.html