A multipart study has been performed to provide a mechanical explanation for the
epidemiologic association between sitting in static (eg, factory or office) or vibration (eg, car …

The disc pressure of the third lumbar disc and the myoelectric activity of several muscles of
the back were measured. Three standing and nine unsupported sitting positions were …

A foundation textbook for those requiring an understanding of the structure and
biomechanics of the lumbar spine and sacrum. The book aims to bring together in one …

Study Design. This study was a cross-sectional study of 403 industrial jobs from 48
manufacturing companies throughout the midwestern United States. Only repetitive jobs …

A continuing challenge for ergonomists has been to determine quantitatively the types of
trunk motion and how much trunk motion contributes to the risk of occupationally-related low …

Study Design. A normative, single-group study was conducted. Objective. To determine
whether there is a difference in electromyographic activation of specific lumbopelvic muscles …

Background Urban taxi drivers differ from other professional drivers in their exposures to
physical and psychosocial hazards in the work environment. Epidemiological data on low …

The lumbar erector spinae consists of two muscles—iliocostalis lumborum and longissimus
thoracis—each with distinct thoracic and lumbar parts. The thoracic parts consist of tiny …

The aim of this study was to compare the postural load during VDU work in the following
work postures:(1) Supporting and not supporting the forearms on the table top,(2) Sitting and …

Objective. The purpose of this study was to examine the myoelectric activity of the erector
spinae muscles of the back in order to determine if the flexion relaxation phenomenon …