Scapulothoracic latent muscle reaction timing comparison between trained overhead throwers and untrained control subjects

Abstract

Although training was not found to influence scapulothoracic LMRT, differences were observed between the dominant and non-dominant upper extremities. Consistent LMRT delays at the dominant upper extremity suggest possible neuromuscular timing differences to enable prolonged glenohumeral joint and scapulothoracic articulation acceleration before deceleration through eccentric muscle activation. Both trained and untrained overhead throwers displayed this response. Variable perturbation test velocities, and in-season testing of larger subject groups may be needed to better elucidate the more subtle differences associated with training.

Efeitos do aquecimento e do alongamento na resposta neuromuscular dos isquiotibiais

“…Para melhor se avaliar a relação entre propriocepção e resposta neuromuscular, algumas pesquisas têm se baseado em medidas da ativação eletromiográfica (EMG), após repentinas perturbações ou mudanças de posicionamento. Embora não mensure diretamente propriocepção, o tempo de latência muscular (TLM) pode ser usado para identificar alterações no sistema sensório-motor 15 .…”