Force Depression in Plantar Flexors Exists Equally in Plantar Flexed and Dorsiflexed Regions.

ABSTRACT: Isometric muscle force attained during isometric contractions decreases after active shortening compared to that attained during purely isometric contractions. This phenomenon is called residual force depression. The aim of this study was to examine whether residual force depression occurs in human plantar flexors in both plantar flexed and dorsiflexed region. In addition, the magnitude of fascicle shortening was evaluated because not only muscle force but also fascicle shortening during active shortening are considered to affect force depression. Eleven male subjects were recruited. All muscle contractions were evoked by muscle belly-electrical stimulation. In the reference trials, isometric plantar flexion (PF) was performed at 0° and 15° of PF. In the residual force depression trials, t

SUBMITTER: Fukutani A 

PROVIDER: S-EPMC5364859 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature