Test-retest reliability and construct validity of trunk extensor muscle force modulation accuracy.

ABSTRACT: Low back pain is associated with changes in trunk muscle structure and function and motor control impairments. Voluntary force modulation (FM) of trunk muscles is a unique and under-investigated motor control characteristic. One of the reasons for this paucity of evidence is the lack of exploration and publication on the reliability and validity of trunk FM protocols. The purpose of this study was to determine the within- and between-day test-retest reliability and construct validity for trunk extensor muscle FM. Twenty-nine healthy participants were tested under three FM conditions with different modulation rates. Testing was performed on a custom-built apparatus designed for trunk isometric force testing. FM accuracy relative to a fluctuating target force (20-50%MVF) was quantified using

SUBMITTER: Gilliam JR 

PROVIDER: S-EPMC10434934 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature