Network of muscle fibers activation facilitates inter-muscular coordination, adapts to fatigue and reflects muscle function.

ABSTRACT: Fundamental movement patterns require continuous skeletal muscle coordination, where muscle fibers with different timing of activation synchronize their dynamics across muscles with distinct functions. It is unknown how muscle fibers integrate as a network to generate and fine tune movements. We investigate how distinct muscle fiber types synchronize across arm and chest muscles, and respond to fatigue during maximal push-up exercise. We uncover that a complex inter-muscular network of muscle fiber cross-frequency interactions underlies push-up movements. The network exhibits hierarchical organization (sub-networks/modules) with specific links strength stratification profile, reflecting distinct functions of muscles involved in push-up movements. We find network reorganization with fatigue

SUBMITTER: Garcia-Retortillo S 

PROVIDER: S-EPMC10468525 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature