Influence of fatigue and velocity on the latency and recruitment order of scapular muscles

Physical Therapy in Sport : Official Journal of the Association of Chartered Physiotherapists in Sports Medicine
Guillermo Mendez-RebolledoFrancisco Jose Berral de la Rosa

Abstract

To determine the influence of velocity and fatigue on scapular muscle activation latency and recruitment order during a voluntary arm raise task, in healthy individuals. Cross-sectional study. University laboratory. Twenty three male adults per group (high-velocity and low-velocity). Onset latency of scapular muscles [Anterior deltoid (AD), lower trapezius (LT), middle trapezius (MT), upper trapezius (UT), and serratus anterior (SA)] was assessed by surface electromyography. The participants were assigned to one of two groups: low-velocity or high-velocity. Both groups performed a voluntary arm raise task in the scapular plane under two conditions: no-fatigue and fatigue. The UT showed early activation (p < 0.01) in the fatigue condition when performing the arm raise task at a high velocity. At a low velocity and with no muscular fatigue, the recruitment order was MT, LT, SA, AD, and UT. However, the recruitment order changed in the high-velocity with muscular fatigue condition, since the recruitment order was UT, AD, SA, LT, and MT. The simultaneous presence of fatigue and high-velocity in an arm raise task is associated with a decrease in the UT activation latency and a modification of the recruitment order of scapular muscles.

Citations

Jul 6, 2019·PeerJ·Guillermo Mendez-RebolledoFrancisco Jose Berral de la Rosa
Oct 28, 2020·Journal of Motor Behavior·Samuele ContemoriAndrea Biscarini

❮ Previous
Next ❯

Related Concepts

Related Feeds

Aphasia

Aphasia affects the ability to process language, including formulation and comprehension of language and speech, as well as the ability to read or write. Here is the latest research on aphasia.

Related Papers

Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology
Guillermo Mendez-RebolledoH B Xie
Journal of Sport Rehabilitation
Rafaela Joyce Barbosa TorresRodrigo C de Araújo
The American Journal of Sports Medicine
A CoolsErik E Witvrouw
Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology
Catarina de Oliveira SousaTania Fátima Salvini
© 2022 Meta ULC. All rights reserved