What’s This Research About?

This study attempted to investigate whether there was an altered muscular
recruitment in trunk extension from a flexed trunk position after a 2-hour
standing bout. They hypothesized that they would see people using more spine
recruitment instead of gluteus maximus in the PD’s. A secondary area of
investigation was whether there would be any gender differences, and or
velocity differences during trunk extension.

TITLE: Altered muscle recruitment during extension from trunk flexion in low back pain developers


PUBLICATION: Clinical Biomechanics

DATE: 2012

AUTHORS : Nelson-Wong E, Alex B, Csepe D, Lancaster D, Callaghan J

Visual analog scale (VAS) is a measurement tool that attempts to get a value for a subjective parameter such as pain. In the case of pain, a subject or patient will be given a sheet of paper with a line on it that notes minimum on one side, and max on the other and told to evaluate and mark their pain along that line.

Low back pain model (LBP model): A previous study by Gallagher et al. has found that under a 2-hour standing protocol of people with no history of back pain 40-60% of them will develop pain (Pain developers(PD) after the 2 hours of standing. The others are deemed non-pain developers(NPD). They had found that PD’s also had a relaxation of gluteal muscles in the standing experiment.

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